Editing AppleScript (section)

===Loop===

The loop construct has multiple variations; all using the keyword '''repeat'''. The loop can be exited via '''exit repeat'''.

; Unconditional
<syntaxhighlight lang="AppleScript">repeat
     -- commands to be repeated
end repeat</syntaxhighlight>

; Repeat a number of times
<syntaxhighlight lang="AppleScript">repeat 10 times
     -- commands to be repeated
end repeat</syntaxhighlight>

; Conditional
For '''repeat while''', the block is executed as long as a condition evaluates to true. The '''repeat until''' loop is the same except that the block is executed as long as the condition evaluates to false.
<syntaxhighlight lang="AppleScript">set x to 5
repeat while x > 0
     set x to x - 1
end repeat

set x to 5
repeat until x ≤ 0
     set x to x - 1
end repeat
</syntaxhighlight>

; With a variable
A variable is initialized to a value and after each execution of the block, the variable is incremented by the step value; 1 if not specified.
<syntaxhighlight lang="AppleScript">
-- repeat the block 2000 times, i gets all values from 1 to 2000
repeat with i from 1 to 2000
     -- commands to be repeated
end repeat

-- repeat the block 4 times, i gets values 100, 75, 50 and 25
repeat with i from 100 to 25 by -25
    -- commands to be repeated 
end repeat
</syntaxhighlight>

; Enumerate
A variable has the value of each list item as the loop progresses.
<syntaxhighlight lang="applescript">set total to 0
repeat with loopVariable in {1, 2, 3, 4, 5}
	set total to total + loopVariable
end repeat
</syntaxhighlight>