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concurrent_unordered_map::at Method

Finds an element in a concurrent_unordered_map with a specified key value.. This method is concurrency-safe.

mapped_type& at(
   const key_type& _Keyval
);

const mapped_type& at(
   const key_type& _Keyval
) const;

_Keyval

The key value to find.

A reference to the data value of the element found.

If the argument key value is not found, the function throws an object of class out_of_range.

Header: concurrent_unordered_map.h

Namespace: concurrency

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