Return a copy of the value associated with the specified key in a given
jss::concurrent_map object.
DataType at(KeyType const& key);
A copy of the value associated with key
in *this
at the point of the call.
std::out_of_range if the specified
key is not present
in *this.
Any exceptions thrown by the copy constructor or move constructor
of DataType. Any
exception thrown by the application of the Hasher
or KeyEquals objects.
at()
may be called concurrently with any other member function of jss::concurrent_map on a given instance
(except for the constructor and destructor) without external synchronization.
#include <jss/concurrent_map.hpp>