visual studio shortcuts getter setter and tostring

Public void AdjustWidth_GivenInigoMontoya42_ReturnsInigoMontoyaExtended()Īssert.AreEqual(42, AdjustWidth('Inigo Montoya', 42).Length) Įven though Substring is called via the null-conditional operator, and a null value?.Substring could seemingly return null, the language behavior does what you would want. Return value?.Substring(0, Math.Min(value.Length, length)).PadRight(length) This begs the question of what happens when the null-conditional operator appears within a call chain, as in the next example: public static string AdjustWidth(string value, int length)

Public void Truncate_WithNull_ReturnsNull()Īssert.AreEqual(null, Truncate(null, 42)) Īs the Truncate_WithNull_ReturnsNull method demonstrates, if in fact the value of the object is null, the null-conditional operator will return null. Return value?.Substring(0, Math.Min(value.Length, length)) C# 6.0 includes a new null-conditional operator that helps you write these checks more succinctly: public static string Truncate(string value, int length) Often, that verbose approach is likely unnecessary given the frequency of the comparison. Although it’s simple, having to check the string parameter for null is somewhat verbose. If it wasn’t for the check for null, the method would throw a NullReferenceException. Result = value.Substring(0, Math.Min(value.Length, length)) If (value != null) // Skip empty string check for elucidation Consider this example: public static string Truncate(string value, int length) This is an exception that almost always indicates a bug because the developer didn’t perform sufficient null checking before invoking a member on a (null) object.

NET developers are likely familiar with the NullReferenceException. Null-Conditional OperatorĮven the newest. Many of these examples are from the next edition of my book, “Essential C# 6.0” (Addison-Wesley Professional). I’ll also maintain a comprehensive up-to-date blog describing updates to each C# 6.0 feature. In this article, I’ll introduce the new features and provide an update on the features discussed back in May. There have been a number of changes and improvements made to C# 6.0 in the CTP3 release of the next version of Visual Studio, code-named “14,” since the May 2014 article, “A C# 6.0 Language Preview” ( /magazine/dn683793.aspx). Volume 29 Number 10 C# : The New and Improved C# 6.0Īlthough C# 6.0 isn’t yet complete, it’s at a point now where the features are close to being finalized.

Visual studio shortcuts getter setter and tostring