These are known as lambda expressions because its syntax is inspired in lambda calculus. Lambda expressions came to C++ in its ISO C++11 standard specification. Anatomy of a C++ Lambda Expression ...

The anonymous function here takes an argument x and calls the capitalize method on it. The map call ensures that the anonymous function is called once for each item. Modern C++ has lambda expressions.

Modern C++ has lambda expressions. However, in C you have to define a function by name and pass a pointer — not a huge problem, but it can get messy if you have a lot of callback functions that ...

This tutorial demonstrates the power of lambda expressions by contrasting implementations of a mathematical example using C++, Java without lambdas, and Java 8 with lambda expressions.

And lambda definition / capture list. Oh, and also Objective C uses square brackets to send messages. () : Construction of variables, definition/declarations of functions, function calls.