Things on this page are fragmentary and immature notes/thoughts of the author. Please read with your own judgement!

There are 3 for loops in C++, the usual for loop, the range-based for loop (introduced in C++11) and the std::for_each for loop.

1. Both the range-based for loop and the std::for_each for loop applies operations on each eleemnt in a specified container/range. Both of them are able to mutate elements of a container/range, but you should never use them to erase elements from a container. You have to use the usual for loop to erase elements from a container.

2. It is suggested that you use the range-based for loop (introduced in C++11) in place of std::for_each when applicable as the range-based for loop is simpler and more readable.