isEmpty

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Subhajit Sahu edited this page Dec 5, 2022 · 12 revisions

Check if a map is empty.

Similar: size, isEmpty.

function isEmpty(x)
// x: a map

const map = require('extra-map');

var x = new Map([['a', 1], ['b', 2], ['c', 3]]);
map.isEmpty(x);
// → false

var x = new Map();
map.isEmpty(x);
// → true

References