Container classes are the solution to a specific kind of code reuse problem. They are building blocks used to create object-oriented programs. They make the internals of a program much easier to construct. The C++ approach to containers is based, of course, on templates. The containers in the standard C++ library represent a full complement of data structures designed to work well with the standard algorithms and to meet common software development needs.
Here is the source code of the generic containers:
The Standard C++ Library: Generic containers (50.3 KiB, 5,376 hits)