hasSubset - nodef/extra-entries GitHub Wiki
Check if entries has a subset.
Alternatives: has, hasValue, hasEntry, hasSubset, hasPath. Similar: randomSubset, subsets, hasSubset.
function hasSubset(x, y, fc, fm)
// x: entries
// y: search subset
// fc: compare function (a, b)
// fm: map function (v, k, x)
const entries = require('extra-entries');
var x = ["a", 1], ["b", 2], ["c", 3], ["d", 4](/nodef/extra-entries/wiki/"a",-1],-["b",-2],-["c",-3],-["d",-4);
var y = ["b", 2], ["d", 4](/nodef/extra-entries/wiki/"b",-2],-["d",-4);
entries.hasSubset(x, y);
// → true
var y = ["b", -2], ["d", -4](/nodef/extra-entries/wiki/"b",--2],-["d",--4);
entries.hasSubset(x, y);
// → false
entries.hasSubset(x, y, (a, b) => Math.abs(a) - Math.abs(b));
// → true
entries.hasSubset(x, y, null, v => Math.abs(v));
// → true