Problem: Filtering out(removing duplicates) from an IEnumerable

One possible solution with using linq would be to group by key and take the first element of each group. Here’s an example:

enumerable.GroupBy(x => x.key).Select(g => g.First())
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Posted by TheBojan

http://www.thebojan.ninja/ http://www.thebojan.se/

4 Comments

  1. Try Distinct(). You’ll like it.

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  2. Yeah, but there is no Distinct() for IEnumerable, unless you implement it using an extension method or something.

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    1. Use can easily cast to IEnumerable.

      collection.Cast().Distinct()

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      1. That is… Cast to IEnumerable of object… HTML got the better of me. 🙂

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