John Smith questions

• Why did a "USING BTREE" appear in "CREATE TABLE" with mySQL?
• Php, is there an array to iterator converter?
• Trigger a run() method of Timer of Java manually
• Phpunit, expecting a method exactly run two times
• Java, return method as reference
• Phpunit, how to remove mock objects?
• Sqlite3, SQLSTATE[HY000]: General error: 5 database is locked
• php, how to detect is a session ID is dead or alive? [duplicate]
• Java, ArrayList and Exception in thread "AWT-EventQueue-0" java.util.ConcurrentModificationException
• Phpunit, why is this a dead code?

John Smith answers