every

Check if all values satisfy a test.

Similar: some, every.

function every(x, ft)
// x:  a map
// ft: test function (v, k, x)

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

var x = new Map([['a', 1], ['b', 2], ['c', -3], ['d', -4]]);
map.every(x, v => v > 0);
// → false

map.every(x, v => v > -10);
// → true

References

• Array.prototype.every: MDN web docs
• all: Python
• Array.every: sugarjs
• Array.none: sugarjs