std::flat_m...lue_compare(3)

💅 std::flat_map::value_compare 💅

okay bestie, this is the std::flat_m...lue_compare(3) page from the C++ Standard Libary — full name std::flat_map::value_compare, and it's literally the tiny function-object baddie that compares your flat_map pairs. 🦋

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✨ NAME ✨

std::flat_map::value_compare — std::flat_map::value_compare.

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🌸 Synopsis 🌸

class value_compare;  (since C++23)

std::flat_map::value_compare is a function object that compares objects of type std::flat_map::const_reference (a pair of references to the stored key/value) by comparing the first components (i.e. keys) of the passed pairs. periodt.

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🎀 Member objects 🎀

• comp (private) — the comparison function object of type std::flat_map::key_compare (exposition-only member object*).

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💖 Member functions 💖

• constructor — constructs a value_compare object, marked (private) and also listed as a (public member function). iykyk.
• operator() — compares two values of type value_type (public member function).

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🧚 std::flat_map<Key,T,Compare,KeyContainer,MappedContainer>::value_compare::value_compare 🧚

this one is private: and exposition only*, bestie:

private:                         (exposition only*)
value_compare( key_compare c );

Initializes the underlying instance of the comparator comp to c.

Parameters

• c — a comparator to assign.

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🔥 std::flat_map<Key,T,Compare,KeyContainer,MappedContainer>::value_compare::operator() 🔥

bool operator()( const const_reference& lhs, const const_reference& rhs ) const;

Compares lhs.first and rhs.first by calling the stored comparator comp.

Parameters

• lhs, rhs — values to compare.

Return value

comp(lhs.first, rhs.first)

Exceptions

May throw implementation-defined exceptions.

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Signed with sparkles by the C++ Standard Libary girlies, version/date 2024.06.10, source cppreference.com. 💖✨