Fresh on codexpert:

C++11: Let's Write a "Hello, Lambda!"

by Ovidiu Cucu

From the article:

... Getting rid of optional parts, we can make our program simpler, as follows:

// Example #2

#include <iostream>

int main()
{
    [] { std::cout << "Hello Lambda!"; } ();
}

Further, let’s take a little deeper look in the lambda introducer part...