{"id":7970,"date":"2020-04-14T20:00:00","date_gmt":"2020-04-14T20:00:00","guid":{"rendered":"http:\/\/itteacheritfreelance.hk\/wordpress\/?guid=3cf7dbc11929cbc46bb83bf7485528b5"},"modified":"2020-04-14T20:00:00","modified_gmt":"2020-04-14T20:00:00","slug":"how-duolingo-migrated-its-android-app-to-100-kotlin","status":"publish","type":"post","link":"https:\/\/itteacheritfreelance.hk\/wordpress\/index.php\/2020\/04\/14\/how-duolingo-migrated-its-android-app-to-100-kotlin\/","title":{"rendered":"How Duolingo Migrated its Android App to 100% Kotlin"},"content":{"rendered":"<p class=\"syndicated-attribution\"><meta name= \\\"keywords \\\" content= \\\"\u96fb\u5b50\u8a08\u7b97\u6a5f, \u6559\u80b2, IT \u96fb\u8166\u73ed,\u96fb\u8166\u88dc\u7fd2\uff0c \u96fb\u8166\u73ed\uff0c \u5bb6\u6559\uff0c \u79c1\u4eba\u8001\u5e2b\uff0c \u8cc7\u8a0a\u6280\u8853\uff0c \u7a0b\u5e8f\u8a2d\u8a08\uff0c \u96fb\u5b50\u8a08\u7b97\u6a5f\uff0c \u904a\u6232\uff0c \u860b\u679c\uff0c \u96fb\u5f71\uff0c \u8a08\u7b97\u6a5f\uff0c\u7de8\u78bc\uff0c Java\uff0c C\/C++\uff0c JavaScript\uff0c PHP\uff0c HTML\uff0c CSS\uff0c MySQL\uff0c mobile\uff0c Android\uff0c \u52d5\u6f2b\uff0c Python\uff0c teacher\uff0c \u88dc\u7fd2\uff0c \u96fb\u8166\u88dc\u7fd2 \u8cc7\u8a0a, \u7535\u5b50\u8ba1\u7b97\u673a, IT ,Game, apple, movie, Computer,student,Java,\u6559\u80b2, ,\u5b66\u751f, \u5b66\u4e60, learn, \u6559\u5b66,  Android, apple,anime, animation, \u4fe1\u606f\u6280\u672f, \u7a0b\u5e8f\u8bbe\u8ba1, \u79fb\u52a8\u7535\u8bdd, \u8cc7\u8a0a\u79d1\u6280,Game, Jeu, Juego,Call Of Duty ,\u4f7f\u547d\u53ec\u559a , \u6e38\u620f, \u7535\u5b50\u6e38\u620f,, \u591a\u4eba\u7535\u5b50\u6e38\u620f, \u7f51\u7edc\u6e38\u620f\uff0conline\uff0conline game, \u624b\u673a\u6e38\u620f, mobile \\\"><\/p>\n<p><img decoding=\"async\" src=\"https:\/\/res.infoq.com\/news\/2020\/04\/duolingo-android-kotlin-port\/en\/headerimage\/kotlin-duoling-app-port-1586893227700.jpeg\"\/><\/p>\n<p>Across the last two years, Duolingo seamlessly migrated its Java Android app to 100% Kotlin. Among the main benefits this brought, developers improved their productivity and happiness while the Duolingo app became almost null pointer exception (NPE) free. InfoQ has spoken with Duolingo Android and web development leader Chaidarun to learn more about their experience.<\/p>\n<p> <i>By Sergio De Simone<\/i><\/p>\n\n<p class=\"syndicated-attribution\"><figure class= \\\"wp-block-image alignnone \\\"><img src= \\\"http:\/\/itteacheritfreelance.hk\/test\/wordpress\/wp-content\/uploads\/2016\/05\/logo2-2.png\\\" alt=\\\"IT\u96fb\u8166\u88dc\u7fd2 java\u88dc\u7fd2 \u70ba\u5927\u5bb6\u914d\u5c0d\u96fb\u8166\u88dc\u7fd2,IT freelance, \u79c1\u4eba\u8001\u5e2b, PHP\u88dc\u7fd2,CSS\u88dc\u7fd2,XML,Java\u88dc\u7fd2,MySQL\u88dc\u7fd2,graphic design\u88dc\u7fd2,\u4e2d\u5c0f\u5b78ICT\u88dc\u7fd2,\u4e00\u5c0d\u4e00\u79c1\u4eba\u88dc\u7fd2\u548cFreelance\u81ea\u7531\u5de5\u4f5c\u914d\u5c0d\u3002\\\"\/><figcaption>\u7acb\u523b\u8a3b\u518a\u53ca\u5831\u540d\u96fb\u8166\u88dc\u7fd2\u8ab2\u7a0b\u5427!<\/figcaption><\/figure>\r\n<\/br>Find A Teacher Form:\r\n<\/br>https:\/\/docs.google.com\/forms\/d\/1vREBnX5n262umf4wU5U2pyTwvk9O-JrAgblA-wH9GFQ\/viewform?edit_requested=true#responses\r\n<\/br><\/br>Email:\r\n<\/br>public1989two@gmail.com<br><br><br><br><br><br><br>\r\n<a href=www.itsec.hk style=color:#FFFFFF;>www.itsec.hk<\/a><br>\r\n<a href=\\\"www.itsec.vip\\\" style=color:#FFFFFF;>www.itsec.vip<\/a><br>\r\n<a href=\\\"www.itseceu.uk\\\" style=color:#FFFFFF;>www.itseceu.uk<\/a><br><\/p>","protected":false},"excerpt":{"rendered":"<div class=\"mh-excerpt\"><p>Across the last two years, Duolingo seamlessly migrated its Java Android app to 100% Kotlin. Among the main benefits this brought, developers improved their productivity and happiness while the Duolingo app became almost null pointer exception (NPE) fr&#8230;<\/p>\n<\/div>","protected":false},"author":242,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"slim_seo":{"title":"How Duolingo Migrated its Android App to 100% Kotlin - ITTeacherITFreelance.hk","description":"Across the last two years, Duolingo seamlessly migrated its Java Android app to 100% Kotlin. Among the main benefits this brought, developers improved their pro"},"footnotes":""},"categories":[8,21],"tags":[2235],"_links":{"self":[{"href":"https:\/\/itteacheritfreelance.hk\/wordpress\/index.php\/wp-json\/wp\/v2\/posts\/7970"}],"collection":[{"href":"https:\/\/itteacheritfreelance.hk\/wordpress\/index.php\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/itteacheritfreelance.hk\/wordpress\/index.php\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/itteacheritfreelance.hk\/wordpress\/index.php\/wp-json\/wp\/v2\/users\/242"}],"replies":[{"embeddable":true,"href":"https:\/\/itteacheritfreelance.hk\/wordpress\/index.php\/wp-json\/wp\/v2\/comments?post=7970"}],"version-history":[{"count":2,"href":"https:\/\/itteacheritfreelance.hk\/wordpress\/index.php\/wp-json\/wp\/v2\/posts\/7970\/revisions"}],"predecessor-version":[{"id":8694,"href":"https:\/\/itteacheritfreelance.hk\/wordpress\/index.php\/wp-json\/wp\/v2\/posts\/7970\/revisions\/8694"}],"wp:attachment":[{"href":"https:\/\/itteacheritfreelance.hk\/wordpress\/index.php\/wp-json\/wp\/v2\/media?parent=7970"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/itteacheritfreelance.hk\/wordpress\/index.php\/wp-json\/wp\/v2\/categories?post=7970"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/itteacheritfreelance.hk\/wordpress\/index.php\/wp-json\/wp\/v2\/tags?post=7970"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}