can-map.js
function (callback) {
			var data = this.___get();
			for (var prop in data) {
				if (hasOwnProperty.call(data, prop)) {
					callback(data[prop], prop);
				}
			}
		}
function (callback) {
			var data = this.___get();
			for (var prop in data) {
				if (hasOwnProperty.call(data, prop)) {
					callback(data[prop], prop);
				}
			}
		}
### _each Iterator that does not trigger live binding.