Using lambdas with standard algorithms

One of the most important modern features of C++ is lambda expressions, also referred to as lambda functions or simply lambdas. Lambda expressions enable us to define anonymous function objects that can capture variables in the scope and be invoked or passed as arguments to functions. Lambdas are useful for many purposes, and in this recipe, we will learn how to use them with standard algorithms.

Getting ready

In this recipe, we'll discuss standard algorithms that take an argument that's a function or predicate that's applied to the elements it iterates through. You need to know what unary and binary functions are and what predicates and comparison functions are. You also need to be familiar with function objects because lambda expressions are syntactic sugar for function objects.

How to do it...

You should prefer to use lambda expressions to pass callbacks to standard algorithms instead of functions...