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How to use TextToFirstChars method of NBi.Core.Transformation.Transformer.Native.Text.TextToPrefix class

Best NBi code snippet using NBi.Core.Transformation.Transformer.Native.Text.TextToPrefix.TextToFirstChars

TextTest.cs

Source:TextTest.cs

...288        [TestCase("123456789", 8, "12345678")]289        [TestCase("123456789", 0, "")]290        [TestCase("(null)", 3, "(null)")]291        [TestCase("(empty)", 3, "(empty)")]292        public void Execute_TextToFirstChars_Valid(string value, int length, string expected)293        {294            var function = new TextToFirstChars(new LiteralScalarResolver<int>(length));295            var result = function.Evaluate(value);296            Assert.That(result, Is.EqualTo(expected));297        }298        [Test]299        [TestCase("123456789", 9, "123456789")]300        [TestCase("123456789", 10, "123456789")]301        [TestCase("123456789", 8, "23456789")]302        [TestCase("123456789", 0, "")]303        [TestCase("(null)", 3, "(null)")]304        [TestCase("(empty)", 3, "(empty)")]305        public void Execute_TextToLastChars_Valid(string value, int length, string expected)306        {307            var function = new TextToLastChars(new LiteralScalarResolver<int>(length));308            var result = function.Evaluate(value);...

TextTransformations.cs

Source:TextTransformations.cs

...88        public IScalarResolver<int> Length { get; }89        public AbstractTextLengthTransformation(IScalarResolver<int> length)90            => Length = length;91    }92    class TextToFirstChars : AbstractTextLengthTransformation93    {94        public TextToFirstChars(IScalarResolver<int> length)95            : base(length) { }96        protected override object EvaluateString(string value)97            => value.Length >= Length.Execute() ? value.Substring(0, Length.Execute()) : value;98    }99    class TextToLastChars : AbstractTextLengthTransformation100    {101        public TextToLastChars(IScalarResolver<int> length)102            : base(length) { }103        protected override object EvaluateString(string value)104            => value.Length >= Length.Execute() ? value.Substring(value.Length - Length.Execute(), Length.Execute()) : value;105    }106    class TextToSkipFirstChars : AbstractTextLengthTransformation107    {108        public TextToSkipFirstChars(IScalarResolver<int> length)...

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