std::{{{1}}}::empty

 

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bool empty() const noexcept;		(since {std}) (until C++20)
[[nodiscard]] bool empty() const noexcept;		(since C++20)

Checks if the container has no elements, i.e. whether begin() == end().

Parameters

(none)

Return value

true if the container is empty, false otherwise.

Complexity

Constant.

See also

size	returns the number of elements (public member function of std::{{{1}}})
empty (C++17)	checks whether the container is empty (function template)