Call multiple lambdas with the same input

You can easily create multiple instances of a lambda with different capture values by wrapping the lambda in a function. This allows you to call different versions of a lambda with the same input.

How to do it…

This is a simple example of a lambda that wraps a value in different types of braces:

• We'll start by creating the wrapper function braces():

  auto braces (const char a, const char b) {
      return [a, b](const char v) {
          cout << format("{}{}{} ", a, v, b);
      };
  }

The braces() function wraps a lambda that returns a three-value string, where the first and last values are characters passed to the lambda as captures, and the middle value is passed as a parameter.

• In the main() function, we use braces() to create four lambdas, using four different sets of braces:

  auto a = braces('(', &apos...