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POHow to resolve ambiguous ZIP call between Enumerable and MoreLINQ?
 

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  1. POHow to resolve ambiguous ZIP call between Enumerable and MoreLINQ?
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    <p>I've ran into problem with extension method resolution. LINQ and MoreLINQ contain <code>zip</code> method, it was present in .NET since <strong>4.0</strong> version and was always in <a href="http://code.google.com/p/morelinq/" rel="nofollow noreferrer">MoreLINQ</a> library. But you can't use one of the implementation with nice-old extension method syntax. So this code won't compile</p> <pre><code>using MoreLinq; using System.Linq; var students = new [] { "Mark", "Bob", "David" }; var colors = new [] { "Pink", "Red", "Blue" }; students.Zip(colors, (s, c) =&gt; s + c ); </code></pre> <p>Error:</p> <pre><code>The call is ambiguous between the following methods or properties: 'MoreLinq.MoreEnumerable.Zip&lt;string,string,string&gt; (System.Collections.Generic.IEnumerable&lt;string&gt;, System.Collections.Generic.IEnumerable&lt;string&gt;, System.Func&lt;string,string,string&gt;)' and 'System.Linq.Enumerable.Zip&lt;string,string,string&gt; (System.Collections.Generic.IEnumerable&lt;string&gt;, System.Collections.Generic.IEnumerable&lt;string&gt;, System.Func&lt;string,string,string&gt;)' </code></pre> <p>I've found good resolution for <code>Concat</code> method on <code>string</code> for MoreLINQ made by Jon Skeet at <a href="https://stackoverflow.com/questions/610870/when-do-extension-methods-break/610908#610908">this post</a>, but I'm not aware of good resolution for <code>zip</code> method. </p> <p><strong>NOTE:</strong> You can always use static method call syntax and it all works fine with </p> <pre><code>MoreEnumerable.Zip(students, colors, (s, c) =&gt; s + c ) </code></pre> <p>but misses the point of extension syntax sugar a little bit. If you have lots of data transformation with LINQ and MoreLINQ calls - you don't want to use static method call in the middle. </p> <p>Are there any better ways to resolve this ambiguity? </p>
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    1. USIlya Ivanov
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      1. POHow to resolve ambiguous ZIP call between Enumerable and MoreLINQ?
      1. USDavin Tryon
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    1. COIsn't there a 4.0-friendly version of MoreLINQ? (ie one that drops MoreLINQ's own `Zip` function)
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    2. CO... or just make one yourself, it's open source :)
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      1. USRawling
    3. CO@AakashM no there isn't. You can see their issue regarding `zip` and .NET 4.0 here http://code.google.com/p/morelinq/issues/detail?id=60 and NoConflict resolution here https://gist.github.com/2869531
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      1. USIlya Ivanov
 

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