export function uniques(array: any[], comp: (a: any, b: any) => boolean = (a, b) => a === b) {
	const len = array.length, res = new Array(len);
	let c = 0;

	function fresh(value: any) {
		for (let j = 0; j < c; j++) {
			if (comp(value, res[j])) {
				return false;
			}
		}
		return true;
	}

	for (let i = 0; i < len; i++) {
		if (fresh(array[i])) {
			res[c++] = array[i];
		}
	}

	res.length = c;
	return res;
}

export function uniquesByAtt<K extends string>(array: Array<{ [k in K]: any }>, att: K) {
	return uniques(array, (a, b) => a[att] === b[att]);
}