rem: return this.inject([], function(array, value) { return array.include(value) ? array : array.concat([value]); 
add: return this.select(function(value) { return !values.include(value); 
context:     return this.inject([], function(array, value) {      return array.include(value) ? array : array.concat([value]);    });
meta: 10582	/local1/tlutelli/issta_data/temp/all_js/javascript/2007_temp/2007/10582/c1f8a57fb495053291d684e68f518dd14dfa0a6f/prototype.js/clean/js_test/prototype.js