rem: if (!this.hasKey(key)) return this; delete this.obj[key]; this.length--; 
add: if (this.hasKey(key)){ delete this.obj[key]; this.length--; } 
context: 	remove: function(key){		if (!this.hasKey(key)) return this;		delete this.obj[key];		this.length--;		return this;	},
meta: 7826	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/7826/0bf209ea59d8f5f8f4cd6fd6a34c72f4723981f8/Hash.js/clean/Plugins/Hash.js