Ds\Map::isEmpty
Returns whether the map is empty
説明
public bool Ds\Map::isEmpty()
戻り値
Returns true if the map is empty, false otherwise.
例
例1 Ds\Map::isEmpty example
<?php
$a = new \Ds\Map(["a" => 1, "b" => 2, "c" => 3]);
$b = new \Ds\Map();
var_dump($a->isEmpty());
var_dump($b->isEmpty());
?>