c++ - Why can't I create a vector of lambdas (of the same type) in C++11?

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I was trying to create a vector of
lambda, but failed:

auto ignore =
            [&]() { return 10; }; //1
std::vector v;
            //2
v.push_back([&]() { return 100; });
            //3

Up to line #2, it
compiles fine. But the line#3 gives
compilation
error:

error: no matching function for call to
'std::vector>::push_back(main()::)'

I
don't want a vector of function pointers or vector of function objects. However, vector
of function objects which encapsulate real lambda expressions,
would work for me. Is this possible?

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class="normal">Answer

Every
lambda has a different type—even if they have the same
signature. You must use a run-time encapsulating container such as
std::function if you want to do something like
that.

e.g.:

std::vector>
            functors;
functors.push_back([&] { return 100;
            });
functors.push_back([&] { return 10;
            });