returns the number of elements matching the given key
Synopsis
Declared in <nlohmann/ordered_map.hpp>
template<class KeyType>
requires detail::is_usable_as_key_type<key_compare, key_type, KeyType>::value
size_type
count(KeyType&& key) const;Return Value
1 if an element with the key exists, 0 otherwise
Parameters
Name |
Description |
key [in] |
key to count |
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