Most containers provide similar functionality. Many operations apply to all containers, and other operations apply to subsets of similar containers. Figure 15.2 describes the many functions that are commonly available in most Standard Library containers. Overloaded operators <
, <=
, >
, >=
, ==
and !=
are not provided for priority_queue
s. Overloaded operators <
, <=
, >
and >=
are not provided for the unordered associative containers. Member functions rbegin
, rend
, crbegin
and crend
are not available in a forward_list
. Before using any container, you should study its capabilities.