HH\Lib\C\is_empty

Requires the Hack Standard Library to be installed.

Facebook Engineer?

This function is available as C\is_empty() in Facebook's www repository.

Returns whether the given Container is empty

namespace HH\Lib\C;

function is_empty<T>(
  Container<T> $container,
): bool;

Time complexity: O(1) Space complexity: O(1)

Parameters