std::map::value_compare
From cppreference.com
| class value_compare;
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std::map::value_compare is a function object that compares objects of type std::map::value_type (key-value pairs) by comparing of the first components of the pairs.
Contents |
[edit] Member types
| Type | Definition |
result_type
|
bool |
first_argument_type
|
value_type
|
second_argument_type
|
value_type
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[edit] Protected member objects
| Name | Type |
comp
|
Compare
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[edit] Member functions
| (constructor) |
constructs a new value_compare object (protected member function) |
| operator() |
compares two values of type value_type (public member function) |
std::map<Key,T,Compare,Alloc>::value_compare::value_compare
| protected:
value_compare( Compare c ); |
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Initializes the internal instance of the comparator to c.
Parameters
| c | - | comparator to assign |
std::map<Key,T,Compare,Alloc>::value_compare::operator()
| bool operator()( const value_type& lhs, const value_type& rhs ) const;
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Compares lhs.first and rhs.first by calling the stored comparator.
Parameters
| lhs, rhs | - | values to compare |
Return value
comp(lhs.first, rhs.first).
Exceptions
(none)