Do functors have an equivalent in C#? [duplicate]

Question

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• Functors when should I use them whats their intended use [closed] 5 answers

Is there an equivalent to Functors in C#?

C# has Func<,>, delegates and anonymous methods but aren't all of these pointers to a method?

The C++ Functor is a class and not a pointer to a method.

Answer 1

C# has Func<,>, delegates and anonymous methods but aren't all of these pointers to a method?

No. Even C# delegates are classes, implemented by the compiler for you. These generated classes (for delegates) are derived from MulticastDelegate which in turn derives from Delegate.

In short, a delegate is a syntactic sugar for a class generated by compiler.

Answer 2

Both lambdas (Func<>, Action<>) and delegates (named as well as anonymous) are classes.

If you need a pointer to method (to pass it into unsafe code, for instance) you should use marshalling:

IntPtr pFunc = Marshal.GetFunctionPointerForDelegate(myDelegate);