Caching the end iterator - Good idea or Bad Idea?

Question

Generally speaking is it a good idea to cache an end iterator (specifically STL containers) for efficiency and speed purposes? such as in the following bit of code:

Answer 1

In general it should not matter if you cache the end iterator. If you feel it does matter, then you should already be using a profiler on your code and would be able to profile both variations. I'd suspect it could differ depending upon the container type - but a profiler would be the only way to know for sure given your compiler, optimizations and STL vendor.