template< class Key, class T, class Compare, class Alloc > bool operator==( const map<Key,T,Compare,Alloc>& lhs, const map<Key,T,Compare,Alloc>& rhs ); | (1) | |
template< class Key, class T, class Compare, class Alloc > bool operator!=( const map<Key,T,Compare,Alloc>& lhs, const map<Key,T,Compare,Alloc>& rhs ); | (2) | |
template< class Key, class T, class Compare, class Alloc > bool operator<( const map<Key,T,Compare,Alloc>& lhs, const map<Key,T,Compare,Alloc>& rhs ); | (3) | |
template< class Key, class T, class Compare, class Alloc > bool operator<=( const map<Key,T,Compare,Alloc>& lhs, const map<Key,T,Compare,Alloc>& rhs ); | (4) | |
template< class Key, class T, class Compare, class Alloc > bool operator>( const map<Key,T,Compare,Alloc>& lhs, const map<Key,T,Compare,Alloc>& rhs ); | (5) | |
template< class Key, class T, class Compare, class Alloc > bool operator>=( const map<Key,T,Compare,Alloc>& lhs, const map<Key,T,Compare,Alloc>& rhs ); | (6) |
Compares the contents of two containers.
1-2) Checks if the contents of
lhs
and rhs
are equal, that is, whether lhs.size() == rhs.size()
and each element in lhs
compares equal with the element in rhs
at the same position. 3-6) Compares the contents of
lhs
and rhs
lexicographically. The comparison is performed by a function equivalent to std::lexicographical_compare
.Parameters
lhs, rhs | - | containers whose contents to compare |
- T, Key must meet the requirements of EqualityComparable in order to use overloads (1-2). | ||
- Key must meet the requirements of LessThanComparable in order to use overloads (3-6). The ordering relation must establish total order. |
Return value
1)
true
if the contents of the containers are equal, false
otherwise 2)
true
if the contents of the containers are not equal, false
otherwise 3)
true
if the contents of the lhs
are lexicographically less than the contents of rhs
, false
otherwise 4)
true
if the contents of the lhs
are lexicographically less than or equal the contents of rhs
, false
otherwise 5)
true
if the contents of the lhs
are lexicographically greater than the contents of rhs
, false
otherwise 6)
true
if the contents of the lhs
are lexicographically greater than or equal the contents of rhs
, false
otherwiseComplexity
Linear in the size of the container.
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