In C#, are lambda expressions objects? If so, what sort of object are they?
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4 Answers
Lambda expressions themselves only exist in source code. They don't have a type themselves, which is why the compiler always insists they're convert to a specific type.
That's why this code doesn't compile:
// No idea what type to convert to!
object x = y => y.Length;
But this does:
Func<string, int> x = y => y.Length;
Lambda expressions are always converted to either a delegate type or an expression tree type. Similarly, anonymous methods are always converted to a delegate type.
1 Comment
Andrew Hare
+1 Nice answer. I like that you explain how lambda expressions are really just syntax sugar for either a delegate or an expression tree.
Yes, lambda expressions are converted to either a delegate or an expression tree - both of which are objects.
Comments
It's an anonymous function that has to conform to some kind of delegate. msdn So, in fact, they're instances of some delegate type.
answered Jun 25, 2009 at 14:19
Frederik Gheysels
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