can-map.js
function (prop, val) {
			var computedAttr = this._computedAttrs[prop];
			if ( computedAttr ) {
				canReflect.setValue(computedAttr.compute, val);
			} else {
				this._data[prop] = val;
			}

			// Adds the property directly to the map instance. But first,
			// checks that it's not overwriting a method. This should be removed
			// in 3.0.
			if ( typeof this.constructor.prototype[prop] !== 'function' && !computedAttr ) {
				this[prop] = val;
			}
		}
function (prop, val) {
			var computedAttr = this._computedAttrs[prop];
			if ( computedAttr ) {
				canReflect.setValue(computedAttr.compute, val);
			} else {
				this._data[prop] = val;
			}

			// Adds the property directly to the map instance. But first,
			// checks that it's not overwriting a method. This should be removed
			// in 3.0.
			if ( typeof this.constructor.prototype[prop] !== 'function' && !computedAttr ) {
				this[prop] = val;
			}
		}
function ( prop , val ) { var computedAttr = this . _computedAttrs [ prop ] ; if ( computedAttr ) { canReflect . setValue ( computedAttr . compute , val ) ; } else { this . _data [ prop ] = val ; } // Adds the property directly to the map instance. But first, // checks that it's not overwriting a method. This should be removed // in 3.0. if ( typeof this . constructor . prototype [ prop ] !== 'function' && ! computedAttr ) { this [ prop ] = val ; } }
### ___set Directly saves the set value as a property on `_data` or sets the computed attribute.
### ___set Directly saves the set value as a property on _data or sets the computed attribute .