Lambda-Over-Lambda in C++14

It’s not a recursive function call, look at it step-by-step:

1. terminal(stdout) – this simply returns a lambda which has captured stdout
2. The result of 1. is called with the lambda hello, which executes the lambda (func(term)), the result of which is passed to terminal(), which simply returns a lambda as in 1.
3. The result of 2. is called with the lambda world, which does the same as 2, this time the return value is discarded…