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How to create a managed delegate from a lambda expression RRS feed

  • Question

  • I would like to write a function in managed C++ that returns a managed delegate for a lambda expression that is defined within the function. E.g. something like:

    System::Func<Boolean> GetOperation()
    {
        return [] () { return true; };
    }

    I get a compile error complaining that lambda function can not be converted to the delegate.

    In C#, of course, the delegate is automatically created for similar code. How can I create a delegate for the lambda function in C++?

    Thanks

    Sunday, April 18, 2010 12:54 AM

Answers

  • C++ lambda expressions have only been put into the native C++ language. They work very differently to the lambda expressions in C# and because of this, you can't do what you want.

    Unless Microsoft invest time into making the new C++0x features work with C++/CLI then don't assume that they will work properly with the managed language.


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    • Marked as answer by Nancy Shao Monday, April 26, 2010 10:03 AM
    Sunday, April 18, 2010 3:20 PM