Home›Browse›observer pattern🌐EnglishEnglishDeutschEspañolFrançaisItalianoNederlandsPolskiPortuguêsSvenskaTürkçeРусскийالعربيةفارسیไทย한국어中文日本語EntityQ818562· pop 27· linked from 143 articlesobserver patternSign in to savedesign patternAvailable in 24 languagesEspañolFrançaisDeutsch中文日本語РусскийPortuguêsItalianoالعربيةBulgarianCatalanCzechGalicianHebrewHungarianNederlandsPolskiSvenskaShow 5 moreUkrainianzh_yueفارسیไทย한국어via Wikidata sitelinks · CC0