A lambda expression is used to create an anonymous function object at the location where the function object will be used. This makes your code much more readable because you can see what will be executed. On first sight, a lambda expression looks like a function definition in-place as a function parameter:
auto less_than_10 = [](int a) {return a < 10; }; bool b = less_than_10(4);
So that we don't have the complication of a function that uses a predicate, in this code we have assigned a variable to the lambda expression. This is not normally how you would use it, but it makes the description clearer. The square brackets at the beginning of the lambda expression are called the capture list. This expression ...
