You can explicitly specify the return type of a lambda by using -> Type after the arguments list: []() -> Type { } However, if a lambda has one statement and that statement is a return statement (and it returns an expression), the compiler can deduce the return type from the type of that one … Read more
Use something that is readable, such as a *= -1; or a = -a; Leave the rest to the optimizer.
It’s worth noting that Visual Studio 2010 already had quite a bit of early C++11 support. So to summarize what is already linked to in other answers, here is what is new in Visual Studio 11 that was not part of Visual Studio 2010: rvalue references to version 2.1 from 2.0 lambdas to version 1.1 … Read more