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submitted by
pheaven
6 months, 8 days ago programmersheaven.com — In this post we look into a curious quirk of C#: you can't use parameters passed as "ref" inside a Linq query (or a lambda expression or anonymous method either). By analysing the intermediate code produced by the C# compiler, we learn how anonymous methods are compiled when they need lexical scoping semantics. Finally, an attempt to change the IL to get the desired semantics reveals why C# forbids this.
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