vector
------

template < class T, class Allocator = allocator<T> > class vector;

Iterator
--------
begin()
end()
rbegin()
rend()

Capacity
--------
empty()
size()
resize()
max_size()
reserver()
capacity()

Access
------
operator[]()
at()
front()
back()

Modifier
--------
assign()
push_back()
pop_back()
insert()
erase()
swap()
clear()

Others
------
get_allocator()