Using LINQ to find a common prefix?

Posted by Roger Lipscombe on Stack Overflow See other posts from Stack Overflow or by Roger Lipscombe
Published on 2009-11-12T09:59:37Z Indexed on 2010/03/29 17:53 UTC
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LINQ

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linq-to-objects

I've got two sequences:

IEnumerable<string> x = new[] { "a", "b", "c" };
IEnumerable<string> y = new[] { "a", "b", "d", "e" };

I'd like to find the common prefix of these two sequences (i.e. "a", "b"). Is there a succinct way to do this in LINQ?

Bear in mind that these aren't really IEnumerable<string>; they're IEnumerable<PathComponent>, where I have an implementation of IEqualityComparer<PathComponent>.

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