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Possible Duplicate:
Why isn’t there a string.Split(string) overload?

There are several overloads but not one that allows sending a string. Which is the very often used by developers, at least by my team.

string[] x = "abc|||dev".Split("|||");

Why?..

Please, I am not asking How to do split passing string.

Community
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RollRoll
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2 Answers2

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x.Split(new String[] { "|||" }, StringSplitOptions.None);

Regex.Split(x, @"([a-zA-Z]+)\|\|\|([a-zA-Z]+)");

public static class StringExtensions()
{
    public static String[] Split(this String s, String delimiter)
    {        
        return s.Split(new String[] { delimiter }, StringSplitOptions.None);
    }
}
Matthew
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Tommaso Belluzzo
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  • Documentation: http://msdn.microsoft.com/en-us/library/tabh47cf.aspx – Matthew Jan 17 '13 at 21:44
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    As I said, I'm aware of the overloads. My question is why not accepting the plain string. If there is any idea behind that... – RollRoll Jan 17 '13 at 21:47
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    This has always annoyed me too. I suppose you could add it as an extension method. – Mike Christensen Jan 17 '13 at 21:49
  • Please read my question... – RollRoll Jan 17 '13 at 21:49
  • It might have been an oversight, as for why Microsoft does not provide one, Eric Lippert wrote a blog post about "Why did you not implement function X", and the answer was that there is a lot of organizational overhead to make library changes for something that can simply be solved by writing it yourself. (Things like documentation, translations, unit-tests, deployment, QA, etc.) – Matthew Jan 17 '13 at 21:50
  • Sorry, I can't explain you why. Probably for convenience as array parameters will be internally iterated to produce splits. – Tommaso Belluzzo Jan 17 '13 at 21:51
  • Matthew, so probably someone missed implementing that in the first place? sounds possible but weird – RollRoll Jan 17 '13 at 21:52
  • Happens all the time, might be why extension methods were born. – Matthew Jan 17 '13 at 21:57
2

I can't say why it isn't included but if you do a lot of string-splitting then an extension-method would be in order to help you with your favorite overload.

class Program
{
    static void Main(string[] args)
    {
        string[] x = "abc|||dev".Split("|||");
    }
}

public static class StringExtensions
{
    public static string[] Split(this string str, string separator)
    {
        return str.Split(new[] { separator }, StringSplitOptions.None);
    }
}
Karl-Johan Sjögren
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