The Second World War, Volume 1: The Gathering Storm by Winston S. Churchill

Beginning Linux Programming (Programmer to Programmer) by Richard Stones and Neil Matthew

10 avril 2003

"Null or empty"'s neat trick NullOrEmptyString. Tired of doing this: "if(s == null || s == String.Empty)"... public class NullOrEmptyString {  public static NullOrEmptyString Value = new NullOrEmptyString(); public static bool operator==(NullOrEmptyString s1, string s2) { return ((object)s1) == null || s1.Equals(s2); } public static bool operator!=(NullOrEmptyString s1, string s2) { return !(((object)s1) == null || s1.Equals(s2)); } public override int GetHashCode() { return String.Empty.GetHashCode(); } public override bool Equals(object o) { return((o is string) && (o == null || (((string)o) == string.Empty))); } public static implicit operator string(NullOrEmptyString s) { return s.ToString(); } public override string ToString() { return String.Empty; } } [.NET Weblogs] Neat trick 2:37:17 PM    comment []  - See Also:  .NET

© Copyright 2007 Charles Nadeau.

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