cpp-unordered_map-functions Archives

Last Updated: 14 December 2018

The unordered_map::load_factor() is a built-in function in C++ STL which returns the current load factor in the unordered_map container. The load factor is the ratio betwe...read more

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unordered_map key_eq() function in C++ STL

Last Updated: 11 July 2025

unordered_map::key_eq() is a built-in function in C++ STL which returns a boolean value according to the comparison. It depends on the key equivalence comparison predicate...read more

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unordered_map hash_function() function in C++ STL

Last Updated: 17 December 2018

The unordered_map::hash_function() is a built in function in C++ STL which is used to get the hash function. This hash function is a unary function which takes a single a...read more

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unordered_map emplace_hint() function in C++ STL

Last Updated: 11 July 2025

The unordered_map::emplace_hint() is a built-in function in C++ STL which inserts the key and its element in the unordered_map container with a given hint. It effectively ...read more

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unordered_map insert in C++ STL

Last Updated: 11 July 2025

The std::unordered_map::insert() in C++ STL is a built-in function used to insert a key-value pair in unordered_map container. As unordered maps only store unique elements...read more

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unordered_map clear in C++ STL

Last Updated: 18 December 2018

unordered_map::clear() function is used to remove all elements from the container. When this function is applied to unordered_map its size becomes zero. Syntax: unordere...read more

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unordered_map empty in C++ STL

Last Updated: 12 June 2023

unordered_map::empty() function is used to check whether container size is zero or not. If container size is zero then it return TRUE otherwise it return FALSE.Syntax: uno...read more

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unordered_map get_allocator in C++ STL

Last Updated: 11 July 2025

unordered_map::get_allocator() is a built in function in C++ STL which is used to get allocator of container unordered_map. Syntax Allocator_type get_allocator()Parameter...read more

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unordered_map cend in C++ STL

Last Updated: 11 July 2025

The unordered_map::cend() is a built-in function in C++ STL which returns an iterator pointing to the position past the end element in the container or in one of its bucke...read more

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unordered_multimap get_allocator in C++ STL

Last Updated: 11 July 2025

unordered_multimap::get_allocator() is a built in function in C++ STL which is used to get allocator of container unordered_mulitmap. Syntax:Allocator_type get_allocator()...read more

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unordered_map find in C++ STL

Last Updated: 26 September 2024

In C++, std::unordered_map::find function is used to search for a specific element using the key in an unordered map container. It is a member function of std::unordered_m...read more

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unordered_map erase in C++ STL

Last Updated: 11 July 2025

in C++, std::unordered_map::erase() is a built-in function used remove elements from the unordered_map container. It is a member function of std::unordered_map class defin...read more

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unordered_map cbegin in C++ STL

Last Updated: 02 January 2019

cbegin function in c++ is used to return a constant iterator pointing the first element in an unordered map.Syntax:unordered_map.cbegin()Parameter: It takes an optional pa...read more

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unordered_map emplace() in C++ STL

Last Updated: 11 July 2025

The unordered_map::emplace() is a built-in function in C++ STL which inserts the key and its element in the unordered_map container. It effectively increases the container...read more

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Important functions of STL Components in C++

Last Updated: 02 November 2023

C++ // C++ code#include iostream#include utilityusing namespace std;int main(){ // Declaring the PAIR1 of int and char // IF pair is not initialized then ...read more

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