How to use Len method of tdutil Package

Best Go-testdeep code snippet using tdutil.Len

slice.go

Source:slice.go Github

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...18func (f Slice) isFlat() bool {19 t := reflect.TypeOf(f.Slice).Elem()20 return t != sliceType && t.Kind() != reflect.Interface21}22func subLen(v reflect.Value) int {23 if v.Kind() == reflect.Interface {24 v = v.Elem()25 }26 if s, ok := v.Interface().(Slice); ok {27 return s.len()28 }29 return 130}31func (f Slice) len() int {32 fv := reflect.ValueOf(f.Slice)33 l := 034 if fv.Kind() == reflect.Map {35 if f.isFlat() {36 return fv.Len() * 237 }38 tdutil.MapEach(fv, func(k, v reflect.Value) bool {39 l += 1 + subLen(v)40 return true41 })42 return l43 }44 fvLen := fv.Len()45 if f.isFlat() {46 return fvLen47 }48 for i := 0; i < fvLen; i++ {49 l += subLen(fv.Index(i))50 }51 return l52}53func subAppendValuesTo(sv []reflect.Value, v reflect.Value) []reflect.Value {54 if v.Kind() == reflect.Interface {55 v = v.Elem()56 }57 if s, ok := v.Interface().(Slice); ok {58 return s.appendValuesTo(sv)59 }60 return append(sv, v)61}62func (f Slice) appendValuesTo(sv []reflect.Value) []reflect.Value {63 fv := reflect.ValueOf(f.Slice)64 if fv.Kind() == reflect.Map {65 if f.isFlat() {66 tdutil.MapEach(fv, func(k, v reflect.Value) bool {67 sv = append(sv, k, v)68 return true69 })70 return sv71 }72 tdutil.MapEach(fv, func(k, v reflect.Value) bool {73 sv = append(sv, k)74 sv = subAppendValuesTo(sv, v)75 return true76 })77 return sv78 }79 fvLen := fv.Len()80 if f.isFlat() {81 for i := 0; i < fvLen; i++ {82 sv = append(sv, fv.Index(i))83 }84 return sv85 }86 for i := 0; i < fvLen; i++ {87 sv = subAppendValuesTo(sv, fv.Index(i))88 }89 return sv90}91func subAppendTo(si []any, v reflect.Value) []any {92 if v.Kind() == reflect.Interface {93 v = v.Elem()94 }95 i := v.Interface()96 if s, ok := i.(Slice); ok {97 return s.appendTo(si)98 }99 return append(si, i)100}101func (f Slice) appendTo(si []any) []any {102 fv := reflect.ValueOf(f.Slice)103 if fv.Kind() == reflect.Map {104 if f.isFlat() {105 tdutil.MapEach(fv, func(k, v reflect.Value) bool {106 si = append(si, k.Interface(), v.Interface())107 return true108 })109 return si110 }111 tdutil.MapEach(fv, func(k, v reflect.Value) bool {112 si = append(si, k.Interface())113 si = subAppendTo(si, v)114 return true115 })116 return si117 }118 fvLen := fv.Len()119 if f.isFlat() {120 for i := 0; i < fvLen; i++ {121 si = append(si, fv.Index(i).Interface())122 }123 return si124 }125 for i := 0; i < fvLen; i++ {126 si = subAppendTo(si, fv.Index(i))127 }128 return si129}130// Len returns the number of items contained in items. Nested Slice131// items are counted as if they are flattened. It returns true if at132// least one [Slice] item is found, false otherwise.133func Len(items []any) (int, bool) {134 l := len(items)135 flattened := true136 for _, item := range items {137 if subf, ok := item.(Slice); ok {138 l += subf.len() - 1139 flattened = false140 }141 }142 return l, flattened143}144// Values returns the items values as a slice of145// [reflect.Value]. Nested [Slice] items are flattened.146func Values(items []any) []reflect.Value {147 l, flattened := Len(items)148 if flattened {149 sv := make([]reflect.Value, l)150 for i, item := range items {151 sv[i] = reflect.ValueOf(item)152 }153 return sv154 }155 sv := make([]reflect.Value, 0, l)156 for _, item := range items {157 if f, ok := item.(Slice); ok {158 sv = f.appendValuesTo(sv)159 } else {160 sv = append(sv, reflect.ValueOf(item))161 }162 }163 return sv164}165// Interfaces returns the items values as a slice of166// any. Nested [Slice] items are flattened.167func Interfaces(items ...any) []any {168 l, flattened := Len(items)169 if flattened {170 return items171 }172 si := make([]any, 0, l)173 for _, item := range items {174 if f, ok := item.(Slice); ok {175 si = f.appendTo(si)176 } else {177 si = append(si, item)178 }179 }180 return si181}...

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OptimalBST.go

Source:OptimalBST.go Github

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1package main2import (3 "fmt"4 "math"5)6func OptimalBSTCost(keys []int, freq []int) int {7 n := len(freq)8 return optimalBSTCostUtil(freq, 0, n-1)9}10func optimalBSTCostUtil(freq []int, i int, j int) int {11 if i > j {12 return 013 }14 if j == i { // one element in this subarray15 return freq[i]16 }17 minVal := math.MaxInt3218 for r := i; r <= j; r++ {19 minVal = min(minVal,20 optimalBSTCostUtil(freq, i, r-1)+21 optimalBSTCostUtil(freq, r+1, j))22 }23 return minVal + sumAll(freq, i, j)24}25func sumAll(freq []int, i int, j int) int {26 s := 027 for k := i; k <= j; k++ {28 s += freq[k]29 }30 return s31}32func OptimalBSTCostTD(keys []int, freq []int) int {33 n := len(freq)34 cost := make([][]int, n)35 for i := range cost {36 cost[i] = make([]int, n)37 for j := range cost[i] {38 cost[i][j] = math.MaxInt3239 }40 }41 for i := 0; i < n; i++ {42 cost[i][i] = freq[i]43 }44 return optimalBSTCostTDUtil(freq, cost, 0, n-1)45}46func optimalBSTCostTDUtil(freq []int, cost [][]int, i int, j int) int {47 if i > j {48 return 049 }50 if cost[i][j] != math.MaxInt32 {51 return cost[i][j]52 }53 s := sumAll(freq, i, j)54 for r := i; r <= j; r++ {55 cost[i][j] = min(cost[i][j],56 optimalBSTCostTDUtil(freq, cost, i, r-1)+57 optimalBSTCostTDUtil(freq, cost, r+1, j)+s)58 }59 return cost[i][j]60}61func min(a, b int) int {62 if a < b {63 return a64 }65 return b66}67func OptimalBSTCostBU(keys []int, freq []int) int {68 n := len(freq)69 cost := make([][]int, n)70 for i := range cost {71 cost[i] = make([]int, n)72 for j := range cost[i] {73 cost[i][j] = math.MaxInt3274 }75 }76 for i := 0; i < n; i++ {77 cost[i][i] = freq[i]78 }79 sm := 080 // l is length of range.81 for l := 1; l < n; l++ {82 for i, j := 0, l; j < n; i, j = i+1, j+1 {83 sm = sumAll(freq, i, j)84 for r := i; r <= j; r++ {85 first, second := 0, 086 if r-1 >= i {87 first = cost[i][r-1]88 }89 if r+1 <= j {90 second = cost[r+1][j]91 }92 cost[i][j] = min(cost[i][j], sm+first+second)93 }94 }95 }96 return cost[0][n-1]97}98func OptimalBSTCostBU2(keys []int, freq []int) int {99 n := len(freq)100 cost := make([][]int, n)101 for i := range cost {102 cost[i] = make([]int, n)103 for j := range cost[i] {104 cost[i][j] = math.MaxInt32105 }106 }107 sumArr := sumInit(freq, n)108 for i := 0; i < n; i++ {109 cost[i][i] = freq[i]110 }111 sm := 0112 // l is length of range.113 for l := 1; l < n; l++ {114 for i, j := 0, l; j < n; i, j = i+1, j+1 {115 sm = sumRange(sumArr, i, j)116 for r := i; r <= j; r++ {117 first, second := 0, 0118 if r-1 >= i {119 first = cost[i][r-1]120 }121 if r+1 <= j {122 second = cost[r+1][j]123 }124 cost[i][j] = min(cost[i][j], sm+first+second)125 }126 }127 }128 return cost[0][n-1]129}130func sumInit(freq []int, n int) []int {131 sum := make([]int, n)132 sum[0] = freq[0]133 for i := 1; i < n; i++ {134 sum[i] = sum[i-1] + freq[i]135 }136 return sum137}138func sumRange(sum []int, i int, j int) int {139 if i == 0 {140 return sum[j]141 }142 return sum[j] - sum[i-1]143}144func main() {145 keys := []int{9, 15, 25}146 freq := []int{30, 10, 40}147 fmt.Println("OBST cost:", OptimalBSTCost(keys, freq))148 fmt.Println("OBST cost:", OptimalBSTCostTD(keys, freq))149 fmt.Println("OBST cost:", OptimalBSTCostBU(keys, freq))150 fmt.Println("OBST cost:", OptimalBSTCostBU2(keys, freq))151}152/*153OBST cost: 130154OBST cost: 130155OBST cost: 130156OBST cost: 130157*/...

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map_test.go

Source:map_test.go Github

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1// Copyright (c) 2018, Maxime Soulé2// All rights reserved.3//4// This source code is licensed under the BSD-style license found in the5// LICENSE file in the root directory of this source tree.6package tdutil_test7import (8 "reflect"9 "sort"10 "testing"11 "github.com/maxatome/go-testdeep/helpers/tdutil"12)13func TestMap(t *testing.T) {14 m := map[string]int{"a": 1, "b": 2, "c": 3}15 t.Run("MapEach", func(t *testing.T) {16 type kv struct {17 key string18 value int19 }20 var s []kv21 ok := tdutil.MapEach(reflect.ValueOf(m), func(k, v reflect.Value) bool {22 s = append(s, kv{23 key: k.Interface().(string),24 value: v.Interface().(int),25 })26 return true27 })28 if !ok {29 t.Error("MapEach returned false")30 }31 sort.Slice(s, func(i, j int) bool { return s[i].key < s[j].key })32 if len(s) != 3 ||33 s[0] != (kv{key: "a", value: 1}) ||34 s[1] != (kv{key: "b", value: 2}) ||35 s[2] != (kv{key: "c", value: 3}) {36 t.Errorf("MapEach failed: %v", s)37 }38 })39 t.Run("MapEach short circuit", func(t *testing.T) {40 called := 041 ok := tdutil.MapEach(reflect.ValueOf(m), func(k, v reflect.Value) bool {42 called++43 return false44 })45 if ok {46 t.Error("MapEach returned true")47 }48 if called != 1 {49 t.Errorf("MapEach callback called %d times instead of 1", called)50 }51 })52 t.Run("MapEachValue", func(t *testing.T) {53 var s []int54 ok := tdutil.MapEachValue(reflect.ValueOf(m), func(v reflect.Value) bool {55 s = append(s, v.Interface().(int))56 return true57 })58 if !ok {59 t.Error("MapEachValue returned false")60 }61 sort.Ints(s)62 if len(s) != 3 || s[0] != 1 || s[1] != 2 || s[2] != 3 {63 t.Errorf("MapEachValue failed: %v", s)64 }65 })66 t.Run("MapEachValue short circuit", func(t *testing.T) {67 called := 068 ok := tdutil.MapEachValue(reflect.ValueOf(m), func(v reflect.Value) bool {69 called++70 return false71 })72 if ok {73 t.Error("MapEachValue returned true")74 }75 if called != 1 {76 t.Errorf("MapEachValue callback called %d times instead of 1", called)77 }78 })79 t.Run("MapSortedValues", func(t *testing.T) {80 vs := tdutil.MapSortedValues(reflect.ValueOf(m))81 if len(vs) != 3 ||82 vs[0].Int() != 1 || vs[1].Int() != 2 || vs[2].Int() != 3 {83 t.Errorf("MapSortedValues failed: %v", vs)84 }85 // nil map86 var mn map[string]int87 vs = tdutil.MapSortedKeys(reflect.ValueOf(mn))88 if len(vs) != 0 {89 t.Errorf("MapSortedValues failed: %v", vs)90 }91 })92 t.Run("MapSortedKeys", func(t *testing.T) {93 ks := tdutil.MapSortedKeys(reflect.ValueOf(m))94 if len(ks) != 3 ||95 ks[0].String() != "a" || ks[1].String() != "b" || ks[2].String() != "c" {96 t.Errorf("MapSortedKeys failed: %v", ks)97 }98 // nil map99 var mn map[string]int100 ks = tdutil.MapSortedKeys(reflect.ValueOf(mn))101 if len(ks) != 0 {102 t.Errorf("MapSortedKeys failed: %v", ks)103 }104 })105}...

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Len

Using AI Code Generation

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1import (2func main() {3 a := []int{1, 2, 3, 4, 5}4 fmt.Println(tdutil.Len(a))5}6import (7func main() {8 a := []int{1, 2, 3, 4, 5}9 fmt.Println(tdutil.Len(a))10}11import (12func main() {13 a := []int{1, 2, 3, 4, 5}14 fmt.Println(tdutil.Len(a))15}16import (17func main() {18 a := []int{1, 2, 3, 4, 5}19 fmt.Println(tdutil.Len(a))20}21import (22func main() {23 a := []int{1, 2, 3, 4, 5}24 fmt.Println(tdutil.Len(a))25}26import (27func main() {28 a := []int{1, 2, 3, 4, 5}29 fmt.Println(tdutil.Len(a))30}31import (32func main() {33 a := []int{1, 2, 3, 4, 5}34 fmt.Println(tdutil.Len(a))35}36import (37func main() {38 a := []int{1, 2, 3, 4, 5}39 fmt.Println(tdutil.Len(a))40}41import (42func main() {

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Len

Using AI Code Generation

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1import (2func main() {3 fmt.Println(tdutil.Len(a))4}5import (6func main() {7 fmt.Println(tdutil.Len(a))8}9import (10func main() {11 fmt.Println(tdutil.Len(a))12}13import (14func main() {15 fmt.Println(tdutil.Len(a))16}17import (18func main() {19 fmt.Println(tdutil.Len(a))20}21import (22func main() {23 fmt.Println(tdutil.Len(a))24}25import (26func main() {27 fmt.Println(tdutil.Len(a))28}29import (30func main() {31 fmt.Println(tdutil.Len(a))32}33import (34func main() {

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Len

Using AI Code Generation

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1import (2func main() {3 fmt.Println(tdutil.Len("Hello World"))4}5You can also import the package using the following syntax:6import tdutil "github.com/tdutil"

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Len

Using AI Code Generation

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1import (2func main() {3 fmt.Println(tdutil.Len("Hello World"))4}5import (6func Len(s string) int {7 return utf8.RuneCountInString(s)8}

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Len

Using AI Code Generation

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1import (2func main() {3 fmt.Println(tdutil.Len("Go"))4}5func Len(s string) int {6 return len(s)7}8import (9func main() {10 fmt.Println(tdutil.Len("Go"))11}

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Len

Using AI Code Generation

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1import "fmt"2import "github.com/tdutil"3func main() {4 fmt.Println(tdutil.Len("hello"))5}6>>> import tdutil7>>> tdutil.Len("hello")8import "fmt"9import "github.com/tdutil"10func main() {11 fmt.Println(tdutil.Len("hello"))12}

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