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How to use tail method in mountebank

Best JavaScript code snippet using mountebank

_pvector.py

Source:_pvector.py

...239        if (self._count >> SHIFT) > (1 << self._shift): # >>>240            new_root = [self._root, self._new_path(self._shift, self._tail)]241            new_shift += SHIFT242        else:243            new_root = self._push_tail(self._shift, self._root, self._tail)244        return new_root, new_shift245    def append(self, val):246        if len(self._tail) < BRANCH_FACTOR:247            new_tail = list(self._tail)248            new_tail.append(val)249            return PythonPVector(self._count + 1, self._shift, self._root, new_tail)250        # Full tail, push into tree251        new_root, new_shift = self._create_new_root()252        return PythonPVector(self._count + 1, new_shift, new_root, [val])253    def _new_path(self, level, node):254        if level == 0:255            return node256        return [self._new_path(level - SHIFT, node)]257    def _mutating_insert_tail(self):258        self._root, self._shift = self._create_new_root()259        self._tail = []260    def _mutating_fill_tail(self, offset, sequence):261        max_delta_len = BRANCH_FACTOR - len(self._tail)262        delta = sequence[offset:offset + max_delta_len]263        self._tail.extend(delta)264        delta_len = len(delta)265        self._count += delta_len266        return offset + delta_len267    def _mutating_extend(self, sequence):268        offset = 0269        sequence_len = len(sequence)270        while offset < sequence_len:271            offset = self._mutating_fill_tail(offset, sequence)272            if len(self._tail) == BRANCH_FACTOR:273                self._mutating_insert_tail()274        self._tail_offset = self._count - len(self._tail)275    def extend(self, obj):276        # Mutates the new vector directly for efficiency but that's only an277        # implementation detail, once it is returned it should be considered immutable278        l = obj.tolist() if isinstance(obj, PythonPVector) else list(obj)279        if l:280            new_vector = self.append(l[0])281            new_vector._mutating_extend(l[1:])282            return new_vector283        return self284    def _push_tail(self, level, parent, tail_node):285        """286        if parent is leaf, insert node,287        else does it map to an existing child? ->288             node_to_insert = push node one more level289        else alloc new path290        return  node_to_insert placed in copy of parent291        """292        ret = list(parent)293        if level == SHIFT:294            ret.append(tail_node)295            return ret296        sub_index = ((self._count - 1) >> level) & BIT_MASK  # >>>297        if len(parent) > sub_index:298            ret[sub_index] = self._push_tail(level - SHIFT, parent[sub_index], tail_node)299            return ret300        ret.append(self._new_path(level - SHIFT, tail_node))301        return ret302    def index(self, value, *args, **kwargs):303        return self.tolist().index(value, *args, **kwargs)304    def count(self, value):305        return self.tolist().count(value)306    def delete(self, index, stop=None):307        l = self.tolist()308        del l[_index_or_slice(index, stop)]309        return _EMPTY_PVECTOR.extend(l)310    def remove(self, value):311        l = self.tolist()312        l.remove(value)...

repeat.js

Source:repeat.js

1/**2 * @license3 * Copyright (c) 2017 The Polymer Project Authors. All rights reserved.4 * This code may only be used under the BSD style license found at5 * http://polymer.github.io/LICENSE.txt6 * The complete set of authors may be found at7 * http://polymer.github.io/AUTHORS.txt8 * The complete set of contributors may be found at9 * http://polymer.github.io/CONTRIBUTORS.txt10 * Code distributed by Google as part of the polymer project is also11 * subject to an additional IP rights grant found at12 * http://polymer.github.io/PATENTS.txt13 */14import { createMarker, directive, NodePart, removeNodes, reparentNodes } from '../lit-html.js';15// Helper functions for manipulating parts16// TODO(kschaaf): Refactor into Part API?17const createAndInsertPart = (containerPart, beforePart) => {18    const container = containerPart.startNode.parentNode;19    const beforeNode = beforePart === undefined ? containerPart.endNode :20        beforePart.startNode;21    const startNode = container.insertBefore(createMarker(), beforeNode);22    container.insertBefore(createMarker(), beforeNode);23    const newPart = new NodePart(containerPart.options);24    newPart.insertAfterNode(startNode);25    return newPart;26};27const updatePart = (part, value) => {28    part.setValue(value);29    part.commit();30    return part;31};32const insertPartBefore = (containerPart, part, ref) => {33    const container = containerPart.startNode.parentNode;34    const beforeNode = ref ? ref.startNode : containerPart.endNode;35    const endNode = part.endNode.nextSibling;36    if (endNode !== beforeNode) {37        reparentNodes(container, part.startNode, endNode, beforeNode);38    }39};40const removePart = (part) => {41    removeNodes(part.startNode.parentNode, part.startNode, part.endNode.nextSibling);42};43// Helper for generating a map of array item to its index over a subset44// of an array (used to lazily generate `newKeyToIndexMap` and45// `oldKeyToIndexMap`)46const generateMap = (list, start, end) => {47    const map = new Map();48    for (let i = start; i <= end; i++) {49        map.set(list[i], i);50    }51    return map;52};53// Stores previous ordered list of parts and map of key to index54const partListCache = new WeakMap();55const keyListCache = new WeakMap();56/**57 * A directive that repeats a series of values (usually `TemplateResults`)58 * generated from an iterable, and updates those items efficiently when the59 * iterable changes based on user-provided `keys` associated with each item.60 *61 * Note that if a `keyFn` is provided, strict key-to-DOM mapping is maintained,62 * meaning previous DOM for a given key is moved into the new position if63 * needed, and DOM will never be reused with values for different keys (new DOM64 * will always be created for new keys). This is generally the most efficient65 * way to use `repeat` since it performs minimum unnecessary work for insertions66 * and removals.67 *68 * IMPORTANT: If providing a `keyFn`, keys *must* be unique for all items in a69 * given call to `repeat`. The behavior when two or more items have the same key70 * is undefined.71 *72 * If no `keyFn` is provided, this directive will perform similar to mapping73 * items to values, and DOM will be reused against potentially different items.74 */75export const repeat = directive((items, keyFnOrTemplate, template) => {76    let keyFn;77    if (template === undefined) {78        template = keyFnOrTemplate;79    }80    else if (keyFnOrTemplate !== undefined) {81        keyFn = keyFnOrTemplate;82    }83    return (containerPart) => {84        if (!(containerPart instanceof NodePart)) {85            throw new Error('repeat can only be used in text bindings');86        }87        // Old part & key lists are retrieved from the last update88        // (associated with the part for this instance of the directive)89        const oldParts = partListCache.get(containerPart) || [];90        const oldKeys = keyListCache.get(containerPart) || [];91        // New part list will be built up as we go (either reused from92        // old parts or created for new keys in this update). This is93        // saved in the above cache at the end of the update.94        const newParts = [];95        // New value list is eagerly generated from items along with a96        // parallel array indicating its key.97        const newValues = [];98        const newKeys = [];99        let index = 0;100        for (const item of items) {101            newKeys[index] = keyFn ? keyFn(item, index) : index;102            newValues[index] = template(item, index);103            index++;104        }105        // Maps from key to index for current and previous update; these106        // are generated lazily only when needed as a performance107        // optimization, since they are only required for multiple108        // non-contiguous changes in the list, which are less common.109        let newKeyToIndexMap;110        let oldKeyToIndexMap;111        // Head and tail pointers to old parts and new values112        let oldHead = 0;113        let oldTail = oldParts.length - 1;114        let newHead = 0;115        let newTail = newValues.length - 1;116        // Overview of O(n) reconciliation algorithm (general approach117        // based on ideas found in ivi, vue, snabbdom, etc.):118        //119        // * We start with the list of old parts and new values (and120        //   arrays of their respective keys), head/tail pointers into121        //   each, and we build up the new list of parts by updating122        //   (and when needed, moving) old parts or creating new ones.123        //   The initial scenario might look like this (for brevity of124        //   the diagrams, the numbers in the array reflect keys125        //   associated with the old parts or new values, although keys126        //   and parts/values are actually stored in parallel arrays127        //   indexed using the same head/tail pointers):128        //129        //      oldHead v                 v oldTail130        //   oldKeys:  [0, 1, 2, 3, 4, 5, 6]131        //   newParts: [ ,  ,  ,  ,  ,  ,  ]132        //   newKeys:  [0, 2, 1, 4, 3, 7, 6] <- reflects the user's new133        //                                      item order134        //      newHead ^                 ^ newTail135        //136        // * Iterate old & new lists from both sides, updating,137        //   swapping, or removing parts at the head/tail locations138        //   until neither head nor tail can move.139        //140        // * Example below: keys at head pointers match, so update old141        //   part 0 in-place (no need to move it) and record part 0 in142        //   the `newParts` list. The last thing we do is advance the143        //   `oldHead` and `newHead` pointers (will be reflected in the144        //   next diagram).145        //146        //      oldHead v                 v oldTail147        //   oldKeys:  [0, 1, 2, 3, 4, 5, 6]148        //   newParts: [0,  ,  ,  ,  ,  ,  ] <- heads matched: update 0149        //   newKeys:  [0, 2, 1, 4, 3, 7, 6]    and advance both oldHead150        //                                      & newHead151        //      newHead ^                 ^ newTail152        //153        // * Example below: head pointers don't match, but tail154        //   pointers do, so update part 6 in place (no need to move155        //   it), and record part 6 in the `newParts` list. Last,156        //   advance the `oldTail` and `oldHead` pointers.157        //158        //         oldHead v              v oldTail159        //   oldKeys:  [0, 1, 2, 3, 4, 5, 6]160        //   newParts: [0,  ,  ,  ,  ,  , 6] <- tails matched: update 6161        //   newKeys:  [0, 2, 1, 4, 3, 7, 6]    and advance both oldTail162        //                                      & newTail163        //         newHead ^              ^ newTail164        //165        // * If neither head nor tail match; next check if one of the166        //   old head/tail items was removed. We first need to generate167        //   the reverse map of new keys to index (`newKeyToIndexMap`),168        //   which is done once lazily as a performance optimization,169        //   since we only hit this case if multiple non-contiguous170        //   changes were made. Note that for contiguous removal171        //   anywhere in the list, the head and tails would advance172        //   from either end and pass each other before we get to this173        //   case and removals would be handled in the final while loop174        //   without needing to generate the map.175        //176        // * Example below: The key at `oldTail` was removed (no longer177        //   in the `newKeyToIndexMap`), so remove that part from the178        //   DOM and advance just the `oldTail` pointer.179        //180        //         oldHead v           v oldTail181        //   oldKeys:  [0, 1, 2, 3, 4, 5, 6]182        //   newParts: [0,  ,  ,  ,  ,  , 6] <- 5 not in new map: remove183        //   newKeys:  [0, 2, 1, 4, 3, 7, 6]    5 and advance oldTail184        //         newHead ^           ^ newTail185        //186        // * Once head and tail cannot move, any mismatches are due to187        //   either new or moved items; if a new key is in the previous188        //   "old key to old index" map, move the old part to the new189        //   location, otherwise create and insert a new part. Note190        //   that when moving an old part we null its position in the191        //   oldParts array if it lies between the head and tail so we192        //   know to skip it when the pointers get there.193        //194        // * Example below: neither head nor tail match, and neither195        //   were removed; so find the `newHead` key in the196        //   `oldKeyToIndexMap`, and move that old part's DOM into the197        //   next head position (before `oldParts[oldHead]`). Last,198        //   null the part in the `oldPart` array since it was199        //   somewhere in the remaining oldParts still to be scanned200        //   (between the head and tail pointers) so that we know to201        //   skip that old part on future iterations.202        //203        //         oldHead v        v oldTail204        //   oldKeys:  [0, 1, -, 3, 4, 5, 6]205        //   newParts: [0, 2,  ,  ,  ,  , 6] <- stuck: update & move 2206        //   newKeys:  [0, 2, 1, 4, 3, 7, 6]    into place and advance207        //                                      newHead208        //         newHead ^           ^ newTail209        //210        // * Note that for moves/insertions like the one above, a part211        //   inserted at the head pointer is inserted before the212        //   current `oldParts[oldHead]`, and a part inserted at the213        //   tail pointer is inserted before `newParts[newTail+1]`. The214        //   seeming asymmetry lies in the fact that new parts are215        //   moved into place outside in, so to the right of the head216        //   pointer are old parts, and to the right of the tail217        //   pointer are new parts.218        //219        // * We always restart back from the top of the algorithm,220        //   allowing matching and simple updates in place to221        //   continue...222        //223        // * Example below: the head pointers once again match, so224        //   simply update part 1 and record it in the `newParts`225        //   array.  Last, advance both head pointers.226        //227        //         oldHead v        v oldTail228        //   oldKeys:  [0, 1, -, 3, 4, 5, 6]229        //   newParts: [0, 2, 1,  ,  ,  , 6] <- heads matched: update 1230        //   newKeys:  [0, 2, 1, 4, 3, 7, 6]    and advance both oldHead231        //                                      & newHead232        //            newHead ^        ^ newTail233        //234        // * As mentioned above, items that were moved as a result of235        //   being stuck (the final else clause in the code below) are236        //   marked with null, so we always advance old pointers over237        //   these so we're comparing the next actual old value on238        //   either end.239        //240        // * Example below: `oldHead` is null (already placed in241        //   newParts), so advance `oldHead`.242        //243        //            oldHead v     v oldTail244        //   oldKeys:  [0, 1, -, 3, 4, 5, 6] <- old head already used:245        //   newParts: [0, 2, 1,  ,  ,  , 6]    advance oldHead246        //   newKeys:  [0, 2, 1, 4, 3, 7, 6]247        //               newHead ^     ^ newTail248        //249        // * Note it's not critical to mark old parts as null when they250        //   are moved from head to tail or tail to head, since they251        //   will be outside the pointer range and never visited again.252        //253        // * Example below: Here the old tail key matches the new head254        //   key, so the part at the `oldTail` position and move its255        //   DOM to the new head position (before `oldParts[oldHead]`).256        //   Last, advance `oldTail` and `newHead` pointers.257        //258        //               oldHead v  v oldTail259        //   oldKeys:  [0, 1, -, 3, 4, 5, 6]260        //   newParts: [0, 2, 1, 4,  ,  , 6] <- old tail matches new261        //   newKeys:  [0, 2, 1, 4, 3, 7, 6]   head: update & move 4,262        //                                     advance oldTail & newHead263        //               newHead ^     ^ newTail264        //265        // * Example below: Old and new head keys match, so update the266        //   old head part in place, and advance the `oldHead` and267        //   `newHead` pointers.268        //269        //               oldHead v oldTail270        //   oldKeys:  [0, 1, -, 3, 4, 5, 6]271        //   newParts: [0, 2, 1, 4, 3,   ,6] <- heads match: update 3272        //   newKeys:  [0, 2, 1, 4, 3, 7, 6]    and advance oldHead &273        //                                      newHead274        //                  newHead ^  ^ newTail275        //276        // * Once the new or old pointers move past each other then all277        //   we have left is additions (if old list exhausted) or278        //   removals (if new list exhausted). Those are handled in the279        //   final while loops at the end.280        //281        // * Example below: `oldHead` exceeded `oldTail`, so we're done282        //   with the main loop.  Create the remaining part and insert283        //   it at the new head position, and the update is complete.284        //285        //                   (oldHead > oldTail)286        //   oldKeys:  [0, 1, -, 3, 4, 5, 6]287        //   newParts: [0, 2, 1, 4, 3, 7 ,6] <- create and insert 7288        //   newKeys:  [0, 2, 1, 4, 3, 7, 6]289        //                     newHead ^ newTail290        //291        // * Note that the order of the if/else clauses is not292        //   important to the algorithm, as long as the null checks293        //   come first (to ensure we're always working on valid old294        //   parts) and that the final else clause comes last (since295        //   that's where the expensive moves occur). The order of296        //   remaining clauses is is just a simple guess at which cases297        //   will be most common.298        //299        // * TODO(kschaaf) Note, we could calculate the longest300        //   increasing subsequence (LIS) of old items in new position,301        //   and only move those not in the LIS set. However that costs302        //   O(nlogn) time and adds a bit more code, and only helps303        //   make rare types of mutations require fewer moves. The304        //   above handles removes, adds, reversal, swaps, and single305        //   moves of contiguous items in linear time, in the minimum306        //   number of moves. As the number of multiple moves where LIS307        //   might help approaches a random shuffle, the LIS308        //   optimization becomes less helpful, so it seems not worth309        //   the code at this point. Could reconsider if a compelling310        //   case arises.311        while (oldHead <= oldTail && newHead <= newTail) {312            if (oldParts[oldHead] === null) {313                // `null` means old part at head has already been used314                // below; skip315                oldHead++;316            }317            else if (oldParts[oldTail] === null) {318                // `null` means old part at tail has already been used319                // below; skip320                oldTail--;321            }322            else if (oldKeys[oldHead] === newKeys[newHead]) {323                // Old head matches new head; update in place324                newParts[newHead] =325                    updatePart(oldParts[oldHead], newValues[newHead]);326                oldHead++;327                newHead++;328            }329            else if (oldKeys[oldTail] === newKeys[newTail]) {330                // Old tail matches new tail; update in place331                newParts[newTail] =332                    updatePart(oldParts[oldTail], newValues[newTail]);333                oldTail--;334                newTail--;335            }336            else if (oldKeys[oldHead] === newKeys[newTail]) {337                // Old head matches new tail; update and move to new tail338                newParts[newTail] =339                    updatePart(oldParts[oldHead], newValues[newTail]);340                insertPartBefore(containerPart, oldParts[oldHead], newParts[newTail + 1]);341                oldHead++;342                newTail--;343            }344            else if (oldKeys[oldTail] === newKeys[newHead]) {345                // Old tail matches new head; update and move to new head346                newParts[newHead] =347                    updatePart(oldParts[oldTail], newValues[newHead]);348                insertPartBefore(containerPart, oldParts[oldTail], oldParts[oldHead]);349                oldTail--;350                newHead++;351            }352            else {353                if (newKeyToIndexMap === undefined) {354                    // Lazily generate key-to-index maps, used for removals &355                    // moves below356                    newKeyToIndexMap = generateMap(newKeys, newHead, newTail);357                    oldKeyToIndexMap = generateMap(oldKeys, oldHead, oldTail);358                }359                if (!newKeyToIndexMap.has(oldKeys[oldHead])) {360                    // Old head is no longer in new list; remove361                    removePart(oldParts[oldHead]);362                    oldHead++;363                }364                else if (!newKeyToIndexMap.has(oldKeys[oldTail])) {365                    // Old tail is no longer in new list; remove366                    removePart(oldParts[oldTail]);367                    oldTail--;368                }369                else {370                    // Any mismatches at this point are due to additions or371                    // moves; see if we have an old part we can reuse and move372                    // into place373                    const oldIndex = oldKeyToIndexMap.get(newKeys[newHead]);374                    const oldPart = oldIndex !== undefined ? oldParts[oldIndex] : null;375                    if (oldPart === null) {376                        // No old part for this value; create a new one and377                        // insert it378                        const newPart = createAndInsertPart(containerPart, oldParts[oldHead]);379                        updatePart(newPart, newValues[newHead]);380                        newParts[newHead] = newPart;381                    }382                    else {383                        // Reuse old part384                        newParts[newHead] =385                            updatePart(oldPart, newValues[newHead]);386                        insertPartBefore(containerPart, oldPart, oldParts[oldHead]);387                        // This marks the old part as having been used, so that388                        // it will be skipped in the first two checks above389                        oldParts[oldIndex] = null;390                    }391                    newHead++;392                }393            }394        }395        // Add parts for any remaining new values396        while (newHead <= newTail) {397            // For all remaining additions, we insert before last new398            // tail, since old pointers are no longer valid399            const newPart = createAndInsertPart(containerPart, newParts[newTail + 1]);400            updatePart(newPart, newValues[newHead]);401            newParts[newHead++] = newPart;402        }403        // Remove any remaining unused old parts404        while (oldHead <= oldTail) {405            const oldPart = oldParts[oldHead++];406            if (oldPart !== null) {407                removePart(oldPart);408            }409        }410        // Save order of new parts for next round411        partListCache.set(containerPart, newParts);412        keyListCache.set(containerPart, newKeys);413    };...

Snake.js

Source:Snake.js

1class Snake {2  constructor(x, y, size) {3    this.x = x;4    this.y = y;5    this.tail = [{ x: this.x, y: this.y }];6    this.size = size;7    this.rotateX = 0;8    this.rotateY = 1;9  }10  init() {}11  move() {12    if (this.rotateX == 1) {13      var newRect = {14        x: this.tail[this.tail.length - 1].x + 20,15        y: this.tail[this.tail.length - 1].y,16      };17    } else if (this.rotateX == -1) {18      var newRect = {19        x: this.tail[this.tail.length - 1].x - 20,20        y: this.tail[this.tail.length - 1].y,21      };22    } else if (this.rotateY == 1) {23      var newRect = {24        x: this.tail[this.tail.length - 1].x,25        y: this.tail[this.tail.length - 1].y + 20,26      };27    } else if (this.rotateY == -1) {28      var newRect = {29        x: this.tail[this.tail.length - 1].x,30        y: this.tail[this.tail.length - 1].y - 20,31      };32    }33    this.tail.shift();34    this.tail.push(newRect);35  }36}37class Apple {38  constructor() {39    var isTouching;40    while (true) {41      isTouching = false;42      this.x =43        Math.floor((Math.random() * canvas.width) / snake.size) * snake.size;44      this.y =45        Math.floor((Math.random() * canvas.height) / snake.size) * snake.size;46      for (var i = 0; i < snake.tail.length; i++) {47        if (this.x == snake.tail[i].x && this.y == snake.tail[i].y) {48          isTouching = true;49        }50      }51      if (!isTouching) {52        break;53      }54    }55    this.color = "pink";56    this.size = snake.size;57  }58}59var canvas = document.getElementById("canvas");60var snake = new Snake(20, 20, 20);61snake.init();62var apple = new Apple();63var canvasContext = canvas.getContext("2d");64window.onload = function () {65  gameLoop();66};67function gameLoop() {68  setInterval(show, 1000 / 15);69}70function show() {71  update();72  draw();73}74function update() {75  checkHit();76  keyCheck();77  canvasContext.clearRect(0, 0, canvas.width, canvas.heigth);78  eatApple();79  snake.move();80  checkHitWall();81}82function draw() {83  canvasContext.fillStyle = "black";84  createRect(0, 0, canvas.width, canvas.height);85  for (var i = 0; i < snake.tail.length; i++) {86    createRect(87      snake.tail[i].x + 2.5,88      snake.tail[i].y + 2.5,89      snake.size - 5,90      snake.size - 5,91      "white"92    );93  }94  canvasContext.font = "20px Arial";95  canvasContext.fillStyle = "#00FF42";96  canvasContext.fillText(97    "Score: " + (snake.tail.length - 1),98    canvas.width - 120,99    18100  );101  createRect(apple.x, apple.y, apple.size, apple.size, apple.color);102}103function createRect(x, y, width, height, color) {104  canvasContext.fillStyle = color;105  canvasContext.fillRect(x, y, width, height);106}107function createEmptyRect(x, y, width, height, color) {108  canvasContext.beginPath();109  canvasContext.lineWidth = "1";110  canvasContext.strokeStyle = color;111  canvasContext.rect(x, y, width, height);112  canvasContext.stroke();113}114function keyCheck() {115  window.addEventListener("keydown", (event) => {116    setTimeout(function () {117      if (event.keyCode == 37 && snake.rotateX != 1) {118        snake.rotateX = -1;119        snake.rotateY = 0;120      } else if (event.keyCode == 38 && snake.rotateY != 1) {121        snake.rotateX = 0;122        snake.rotateY = -1;123      } else if (event.keyCode == 39 && snake.rotateX != -1) {124        snake.rotateX = 1;125        snake.rotateY = 0;126      } else if (event.keyCode == 40 && snake.rotateY != -1) {127        snake.rotateX = 0;128        snake.rotateY = 1;129      }130    }, 1);131  });132}133function eatApple() {134  if (135    snake.tail[snake.tail.length - 1].x == apple.x &&136    snake.tail[snake.tail.length - 1].y == apple.y137  ) {138    snake.tail[snake.tail.length] = { x: apple.x, y: apple.y };139    apple = new Apple();140  }141}142function checkHit() {143  var isHit;144  for (var i = 0; i < snake.tail.length - 1; i++) {145    isHit = false;146    if (147      snake.tail[snake.tail.length - 1].x == snake.tail[i].x &&148      snake.tail[snake.tail.length - 1].y == snake.tail[i].y149    ) {150      isHit = true;151    }152    if (isHit) {153      console.log("yeap");154      snake = new Snake(20, 20, 20);155    }156  }157}158function checkHitWall() {159  var headTail = snake.tail[snake.tail.length - 1];160  if (headTail.x == -snake.size) {161    headTail.x = canvas.width - snake.size;162  }163  if (headTail.x == canvas.width) {164    headTail.x = 0;165  }166  if (headTail.y == -snake.size) {167    headTail.y = canvas.height - snake.size;168  }169  if (headTail.y == canvas.height) {170    headTail.y = 0;171  }...

queueWithCircularlyLinkedList.py

Source:queueWithCircularlyLinkedList.py

...38                return value_to_return39            current_for_parse = current_for_parse.next_object40            count += 141    @property42    def tail(self):43        return self._tail44    @property45    def size(self):46        return self._size47    def first(self):48        if self.is_empty():49            raise Empty(self.MESSAGE_IF_EMPTY)50        element_to_return = self.tail.next_object51        return element_to_return.element52    def last(self):53        if self.is_empty():54            raise Empty(self.MESSAGE_IF_EMPTY)55        element_to_return = self.tail.element56        return element_to_return...

linked-list-queue-practice-spec.js

Source:linked-list-queue-practice-spec.js

1const { SinglyLinkedNode,2        SinglyLinkedList,3        DoublyLinkedNode,4        DoublyLinkedList } = require('../linked-list-queue-practice.js');5const { expect } = require('chai');6const chai = require('chai');7describe('Part 2: Linked Lists', () => {8  let node;9  let list;10  beforeEach(() => {11    list = new SinglyLinkedList();12  });13  it('`listLength` returns the length of the linked list', () => {14    list.addToTail(1);15    list.addToTail(2);16    list.addToTail(3);17    list.addToTail(4);18    expect(list.listLength()).to.equal(4);19  });20  it('`sumOfNodes` returns the sum total of all nodes', () => {21    list.addToTail(1);22    list.addToTail(4);23    list.addToTail(5);24    list.addToTail(8);25    expect(list.sumOfNodes()).to.equal(18);26  });27  it('`averageValue` returns the average of all node values', () => {28    list.addToTail(12);29    list.addToTail(6);30    list.addToTail(5);31    list.addToTail(13);32    expect(list.averageValue()).to.equal(9);33  });34  it('`findNthNode` finds a node in the linked list', () => {35    list.addToTail(13);36    list.addToTail(21);37    list.addToTail(32);38    list.addToTail(14);39    list.addToTail(53);40    expect(list.findNthNode(3).value).to.equal(14);41  });42  it('`findMid` returns the middle node (rounded down)', () => {43    list.addToTail(1);44    list.addToTail(2);45    list.addToTail(3);46    expect(list.findMid().value).to.equal(2);47    list.addToTail(4);48    list.addToTail(5);49    list.addToTail(6);50    expect(list.findMid().value).to.equal(3);51  });52  it('`reverse` returns a new reversed linked list', () => {53    list.addToTail(1);54    list.addToTail(2);55    list.addToTail(3);56    list.addToTail(4);57    list.addToTail(5);58    list.addToTail(6);59    const reversed = list.reverse();60    let cur = reversed.head;61    for (let i = 6 ; i >= 1 ; i--) {62      expect(cur.value).to.equal(i);63      cur = cur.next;64    }65    expect(cur).to.equal(null);66  });67  it('`reverseInPlace` reverses the linked list in-place', () => {68    list.addToTail(1);69    list.addToTail(2);70    list.addToTail(3);71    list.addToTail(4);72    list.addToTail(5);73    list.addToTail(6);74    list.reverseInPlace();75    let cur = list.head;76    for (let i = 6 ; i >= 1 ; i--) {77      expect(cur.value).to.equal(i);78      cur = cur.next;79    }80    expect(cur).to.equal(null);81  });82});83describe('Part 3: Doubly Linked Lists', () => {84  let node;85  let list;86  beforeEach(() => {87    dll = new DoublyLinkedList();88  });89  it('`findMid` returns the middle node (rounded down)', () => {90    dll.addToTail(1);91    dll.addToTail(2);92    dll.addToTail(3);93    expect(dll.findMid().value).to.equal(2);94    dll.addToTail(4);95    dll.addToTail(5);96    dll.addToTail(6);97    expect(dll.findMid().value).to.equal(3);98  });99  it('`reverse` returns a new reversed linked list', () => {100    dll.addToTail(1);101    dll.addToTail(2);102    dll.addToTail(3);103    dll.addToTail(4);104    dll.addToTail(5);105    dll.addToTail(6);106    const reversed = dll.reverse();107    let cur = reversed.head;108    for (let i = 6 ; i >= 1 ; i--) {109      expect(cur.value).to.equal(i);110      cur = cur.next;111    }112    expect(cur).to.equal(null);113  });114  it('`reverseInPlace` reverses the linked list in-place', () => {115    dll.addToTail(1);116    dll.addToTail(2);117    dll.addToTail(3);118    dll.addToTail(4);119    dll.addToTail(5);120    dll.addToTail(6);121    dll.reverseInPlace();122    let cur = dll.head;123    for (let i = 6 ; i >= 1 ; i--) {124      expect(cur.value).to.equal(i);125      cur = cur.next;126    }127    expect(cur).to.equal(null);128  });...

snake.py

Source:snake.py

...3        self.head = head4        self.tail = tail5    def set_head(self, head):6        self.head = head7    def set_tail(self, tail):8        self.tail = tail9    def get_head(self):10        return self.tail11    def get_tail(self):12        return self.tail13    @staticmethod14    def validate_snake(head, tail, board_size):15        if tail < head and board_size > head > tail:16            return True...

Using AI Code Generation

1const imposter = {2        {3                {4                    "is": {5                    }6                }7        }8};9const mb = require('mountebank');10mb.create(imposter).then(function (result) {11    console.log(`Created imposter ${result.port}`);12    return mb.get(result.port);13}).then(function (result) {14    console.log(`Got imposter ${result.port}`);15    return mb.del(result.port);16}).then(function (result) {17    console.log(`Deleted imposter ${result.port}`);18}).catch(function (error) {19    console.error(`Error: ${error.message}`);20});21const imposter = {22        {23                {24                    "is": {25                    }26                }27        }28};29const mb = require('mountebank');30mb.create(imposter).then(function (result) {31    console.log(`Created imposter ${result.port}`);32    return mb.get(result.port);33}).then(function (result) {34    console.log(`Got imposter ${result.port}`);35    return mb.del(result.port);36}).then(function (result) {37    console.log(`Deleted imposter ${result.port}`);38}).catch(function (error) {39    console.error(`Error: ${error.message}`);40});41const imposter = {42        {43                {44                    "is": {45                    }46                }47        }48};49const mb = require('mountebank');50mb.create(imposter).then(function (result) {51    console.log(`Created imposter ${result.port}`);52    return mb.get(result.port);53}).then(function (result) {54    console.log(`Got imposter ${result.port}`);55    return mb.del(result.port);56}).then(function (result) {

Using AI Code Generation

1var mb = require('mountebank');2var assert = require('assert');3var imposter = {4        {5                {6                    is: {7                    }8                }9        }10};11mb.create(imposter).then(function (server) {12    return server.get('/').then(function (response) {13        assert.equal(response.body, "Hello, World!");14        return server.stop();15    });16});17{18  "scripts": {19  },20  "dependencies": {21  }22}

Using AI Code Generation

1var mb = require('mountebank');2var Q = require('q');3var server = mb.create({4});5server.start()6    .then(function () {7        return server.post('/imposters', {8                {9                        {10                            is: {11                            }12                        }13                }14        });15    })16    .then(function (response) {17        return server.get('/imposters');18    })19    .then(function (response) {20        return server.del('/imposters/3000');21    })22    .then(function (response) {23        return server.stop();24    })25    .done();26var mb = require('mountebank');27var Q = require('q');28var server = mb.create({29});30server.start()31    .then(function () {32        return server.post('/imposters', {33                {34                        {35                            is: {36                            }37                        }38                }39        });40    })41    .then(function (response) {42        return server.get('/imposters');43    })44    .then(function (response) {45        return server.del('/imposters/3000');46    })47    .then(function (response) {48        return server.stop();49    })50    .done();51var mb = require('mountebank');52var Q = require('q');53var server = mb.create({

Using AI Code Generation

1var mb = require('mountebank');2var imposter = {3    stubs: [{4        responses: [{5            is: {6            }7        }]8    }]9};10mb.create(imposter).then(function (imposter) {11    return imposter.get('/').then(function (response) {12        console.log(response.body);13        return imposter.del();14    });15});

Using AI Code Generation

1var mb = require('mountebank');2var fs = require('fs');3var path = require('path');4var imposter = JSON.parse(fs.readFileSync(path.resolve(__dirname, 'imposter.json'), 'utf8'));5mb.create({port:2525, pidfile:'mb.pid', logfile:'mb.log'}, function (error, mbServer) {6    mbServer.createImposter(imposter, function (error, imposter) {7        console.log('Imposter created');8    });9});10{11        {12                {13                    "is": {14                        "headers": {15                        },16                        "body": {17                        }18                    }19                }20        }21}22var mb = require('mountebank');23var fs = require('fs');24var path = require('path');25var imposter = JSON.parse(fs.readFileSync(path.resolve(__dirname, 'imposter.json'), 'utf8'));26mb.create({port:2525, pidfile:'mb.pid', logfile:'mb.log'}, function (error, mbServer) {27    mbServer.createImposter(imposter, function (error, imposter) {28        console.log('Imposter created');29    });30});31{32        {33                {34                    "is": {35                        "headers": {36                        },37                        "body": {38                        }39                    }40                }41        }42}43var mb = require('mountebank');44var fs = require('fs');45var path = require('path');46var imposter = JSON.parse(fs.readFileSync(path.resolve(__dirname, 'imposter.json'), 'utf8'));47mb.create({port:2525, pidfile:'mb.pid', logfile:'mb.log'}, function (

Using AI Code Generation

1var mb = require('mountebank').create({port: 2525, pidfile: 'mb.pid', logfile: 'mb.log', loglevel: 'debug', ipWhitelist: ['*'], protofile: 'mb.proto', allowInjection: true, localOnly: false, noParse: false, recordRequests: false, replayable: false, debug: false});2mb.start().then(function() {console.log('mountebank started');});3mb.post('/imposters', {protocol: 'http', port: 4545, stubs: [{responses: [{is: {body: 'Hello, world!'}}]}]}).then(function (response) {console.log(response.body);});4mb.get('/imposters').then(function (response) {console.log(response.body);});5mb.get('/imposters/4545').then(function (response) {console.log(response.body);});6mb.del('/imposters/4545').then(function (response) {console.log(response.body);});7var exec = require('child_process').exec;8var cmd = 'mb --configfile mb.json --loglevel debug --ipWhitelist * --protofile mb.proto --allowInjection --localOnly false --noParse false --recordRequests false --replayable false --debug false --pidfile mb.pid --logfile mb.log --port 2525 --allowInjection --localOnly false --noParse false --recordRequests false --replayable false --debug false';9exec(cmd, function(error, stdout, stderr) {10    console.log(stdout);11});12var exec = require('child_process').exec;13var cmd = 'mb --configfile mb.json --loglevel debug --ipWhitelist * --protofile mb.proto --allowInjection --localOnly false --noParse false --recordRequests false --replayable false --debug false --pidfile mb.pid --logfile mb.log --port 2525 --allowInjection --localOnly false --noParse false --recordRequests false --replayable false --debug false';14exec(cmd, function(error, stdout, stderr) {15    console.log(stdout);16});17var exec = require('child_process').exec;

Using AI Code Generation

1var mb = require('mountebank');2var fs = require('fs');3var path = require('path');4var assert = require('assert');5var imposter = JSON.parse(fs.readFileSync(path.resolve(__dirname, 'imposter.json')));6var port = 4545;7mb.create({8}, function (error, server) {9    assert.ok(!error);10    server.post('/imposters', imposter, function (error, response) {11        assert.ok(!error);12        assert.equal(response.statusCode, 201);13        server.get('/imposters', function (error, response) {14            assert.ok(!error);15            assert.equal(response.statusCode, 200);16            server.del('/imposters', function (error, response) {17                assert.ok(!error);18                assert.equal(response.statusCode, 200);19                server.del('/imposters', function (error, response) {20                    assert.ok(!error);21                    assert.equal(response.statusCode, 404);22                    server.del('/imposters', function (error, response) {23                        assert.ok(!error);24                        assert.equal(response.statusCode, 404);25                        server.del('/imposters', function (error, response) {26                            assert.ok(!error);27                            assert.equal(response.statusCode, 404);28                            server.del('/imposters', function (error, response) {29                                assert.ok(!error);30                                assert.equal(response.statusCode, 404);31                                server.del('/imposters', function (error, response) {32                                    assert.ok(!error);33                                    assert.equal(response.statusCode, 404);34                                    process.exit(0);35                                });36                            });37                        });38                    });39                });40            });41        });42    });43});44{45        {46                {47                    "is": {48                        "headers": {49                        },50                        "body": "{ \"name\": \"John Doe\" }"51                    }52                }53        }54}

Using AI Code Generation

1var mb = require('mountebank');2var port = 2525;3var ip = 'localhost';4mb.create({5}, function (error, imposter) {6    console.log('Imposter started on port ' + imposter.port);7    imposter.post('/test', { "foo": "bar" }, 200, function (error, response) {8        console.log('POST /test responded with ' + response.statusCode);9    });10    imposter.get('/test', { "foo": "bar" }, 200, function (error, response) {11        console.log('GET /test responded with ' + response.statusCode);12    });13    imposter.get('/test', { "foo": "bar" }, 200, function (error, response) {14        console.log('GET /test responded with ' + response.statusCode);15    });16    imposter.get('/test', { "foo": "bar" }, 200, function (error, response) {17        console.log('GET /test responded with ' + response.statusCode);18    });19    imposter.get('/test', { "foo": "bar" }, 200, function (error, response) {20        console.log('GET /test responded with ' + response.statusCode);21    });22    imposter.get('/test', { "foo": "bar" }, 200, function (error, response) {23        console.log('GET /test responded with ' + response.statusCode);24    });25    imposter.get('/test', { "foo": "bar" }, 200, function (error, response) {26        console.log('GET /test responded with ' + response.statusCode);27    });28    imposter.get('/test', { "foo": "bar" }, 200, function (error, response) {29        console.log('GET /test responded with ' + response.statusCode);30    });31    imposter.get('/test', { "foo": "bar" }, 200, function (error, response) {32        console.log('GET /test responded with ' + response.statusCode);33    });34    imposter.get('/test', { "foo": "bar" }, 200, function (error, response) {35        console.log('GET /test responded with ' + response.statusCode);36    });37    imposter.get('/test', { "foo": "bar" }, 200, function (error, response) {38        console.log('

Using AI Code Generation

1var assert = require('assert'),2    mb = require('mountebank');3mb.create({ port: 2525, pidfile: 'mb.pid', logfile: 'mb.log', ipWhitelist: ['*'] }, function (error, imposter) {4    assert.ifError(error);5    imposter.post('/api/employees', { employees: [{ name: 'John', age: 30 }] }, function (error, response) {6        assert.ifError(error);7        assert.equal(response.statusCode, 200);8        assert.equal(response.body, 'Employees added successfully');9        imposter.get('/api/employees', function (error, response) {10            assert.ifError(error);11            assert.equal(response.statusCode, 200);12            assert.deepEqual(response.body, { employees: [{ name: 'John', age: 30 }] });13            imposter.del('/api/employees', function (error, response) {14                assert.ifError(error);15                assert.equal(response.statusCode, 200);16                assert.equal(response.body, 'Employees deleted successfully');17                imposter.get('/api/employees', function (error, response) {18                    assert.ifError(error);19                    assert.equal(response.statusCode, 200);20                    assert.deepEqual(response.body, { employees: [] });21                    imposter.del('/imposters', function (error, response) {22                        assert.ifError(error);23                        assert.equal(response.statusCode, 200);24                        assert.equal(response.body, 'All imposters deleted');25                    });26                });27            });28        });29    });30});

Using AI Code Generation

1var mb = require('mountebank');2var port = 2525;3var protocol = 'http';4var host = 'localhost';5var client = mb.createClient({6});7var predicate = {8    "equals": {9    }10};11var response = {12    "is": {13        "headers": {14        },15        "body": {16        }17    }18};19var stub = {20};21client.post('/imposters', { port: port, protocol: protocol, stubs: [stub] }, function (error, response) {22    if (error) {23        console.error(error);24    }25    else {26        console.log(response.body);27        client.get("/imposters/" + port + "/requests", function (error, response) {28            if (error) {29                console.error(error);30            }31            else {32                console.log(response.body);33                client.del("/imposters/" + port, function (error, response) {34                    if (error) {35                        console.error(error);36                    }37                    else {38                        console.log(response.body);39                    }40                });41            }42        });43    }44});45var mb = require('mountebank');46var port = 2525;47var protocol = 'http';48var host = 'localhost';49var client = mb.createClient({50});51var predicate = {52    "equals": {53    }54};55var response = {56    "is": {57        "headers": {58        },59        "body": {60        }61    }62};63var stub = {

Automation Testing Tutorials

Learn to execute automation testing from scratch with LambdaTest Learning Hub. Right from setting up the prerequisites to run your first automation test, to following best practices and diving deeper into advanced test scenarios. LambdaTest Learning Hubs compile a list of step-by-step guides to help you be proficient with different test automation frameworks i.e. Selenium, Cypress, TestNG etc.