2015-04-28から1日間の記事一覧

meaning and respond ; signal SIGABRT

iOS

Between some outlet and mainstoryboard links are invalid check all outlet links are valid or ... delete link connections and reconnect them What does "Thread 1: signal SIGABRT" mean? | Treehouse Forumteamtreehouse.com

NSNumber rand gist

gist.github.com

null in sql ; what is

DB

NULL values represent missing unknown data. SQL NULL Values - IS NULL and IS NOT NULL