if — Apollo

;
IF -- Evaluates a given expression, and executes an action-list conditionally.
      (The IF command serves the same purpose as an if/then or if/then/else
       construct in most high-level languages.)

  > IF x > 0 [EXAMINE x]

  > IF x > 0 [EXAMINE x] -ELSE [EXAMINE y]

  > IF ((x < y) AND (y < z)) [DELETE -B -ALL; BREAKPOINT f1\; GO]

  > IF flag [PRINT 'flag is on']  -ELSE [PRINT 'flag is off']

  > BREAKPOINT 24 -DO [IF ((x << n) < 16) [PRINT x] ]
Museum
