container types

Containers In-depth

Types

Every standard container defines these typenames as members:

Typename	Meaning
value_type	the type of the containers elements (1st template arg)
allocator_type	describes how memory is allocated and deallocated for elements (optional 2nd template arg)
size_type	the type used for indexing the elements (usually corresponds to size_t)
difference_type	the type representing the result of subtracting two iterators
iterator	behaves like value_type*
reference	behaves like value_type&

类内static const int 变量vc6不支持类内赋值,vc8可以，标准是允许的