To understand what the lambda function consists of, one can view it as a regular class with restrictions:
- The class only consists of one member function.
- The capture block is a combination of the class's member variables and its constructor.
- Each lambda function has its own unique type. Even if two lambda functions are plain clones of each other, they still have their own unique type.
The following table shows a simple lambda function, is_above, and a class which corresponds to the lambda function. The left column uses capture by value and the right column shows capture by reference.
|
Lambda with capture by value... |
Lambda with capture by reference... |
auto th = 3;auto is_above = [th |
