# Containers Sample

   Containers are classes that manage a homogenous collection of objects, in some well defined organization.
   
   Stroika's [container classes](../../Library/Sources/Stroika/Foundation/Containers/ReadMe.md) are well documented, and examples are provided in the headers/class declarations.

   The 'containers' sample application walks you through a few helpful examples of how to use the Container
   classes. It illustrates:

   *  **Collection<T>** - the most basic 'modifyable Iterable' container
   *  **Mapping<KEY, VALUE>** - a key-value-pair association, where each item is associated with 0 or 1 associated (or mapped) element
   *  **Sequence<T>** - which is best thought of as a vector (though it can be implemented with a linked list, or doubly linkled list or other structure quite reasonably). It is a mapping from the natural numbers to elements of type T. Those natural numbers are called the indexes of the sequence.
   *  **Set<T>** - like a collection, but each element can be stored at most one time (attempts to store more not an error - just silently ignored). This closely matches the mathematical definition of a set.