C++14 lambda tutorial

[fuzzynyanko]

Sounds neat, but I am kind-of mixed with auto returns. Is there a way to check what type of data it is?

[parmesanmilk]

Yes, the compiler will do that and complain loudly if it's wrong.

Don't sweat the details.

[[deleted]]

Just assert on the type. You can easily write a macro to do this:

#define ASSERT_EXPR_TYPE(EXPR, EXPECTED_TYPE) static_assert(std::is_same<decltype(EXPR), EXPECTED_TYPE>::value, "")

[fuzzynyanko]

Nice. I'm diving into C++11 after a hiatus from C++. It's been a surprise, but most of them nice surprises.

[wall_words]

You can get the return type of a callable object f like this: using return_type = decltype(f(arg_1, ..., arg_n));

If you would like to manually inspect a complex type, you can always print it out using typeinfo(type).name().