==========C++ Maps==========

C++ Maps are sorted associative containers that contain unique key/value pairs.  Maps are sorted by their keys.

For example, you could create a map that associates a string with an integer,
and then use that map to associate the number of days in each month with the
name of each month.

|[[map_constructors]]|default methods to allocate, copy, and deallocate maps|
|[[map_operators]]|assign, compare, and access elements of a map|
|[[map_typedefs]]|typedefs of a map|
|[[begin]]|returns an iterator to the beginning of the map|
|[[clear]]|removes all elements from the map|
|[[count]]|returns the number of elements matching a certain key|
|[[empty]]|true if the map has no elements|
|[[end]]|returns an iterator just past the last element of a map|
|[[equal_range]]|returns iterators to the first and just past the last elements matching a specific key|
|[[erase]]|removes elements from a map|
|[[find]]|returns an iterator to specific elements|
|[[insert]]|insert items into a map|
|[[key_comp]]|returns the function that compares keys|
|[[lower_bound]]|returns an iterator to the first element greater than or equal to a certain value|
|[[max_size]]|returns the maximum number of elements that the map can hold|
|[[rbegin]]|returns a reverse_iterator to the end of the map|
|[[rend]]|returns a reverse_iterator to the beginning of the map|
|[[size]]|returns the number of items in the map|
|[[swap]]|swap the contents of this map with another|
|[[upper_bound]]|returns an iterator to the first element greater than a certain value|
|[[value_comp]]|returns the function that compares values|