while 1?

[qwertylol]

While 1 

WhileEnd

What does this mean? it's going to run until 1 <> 1 ?

[SleepyXtreme]

that means while 1 exists, it's an infinite loop.

so essentially it's until 1<>1

[SadBunny]

that means while 1 exists, it's an infinite loop.

so essentially it's until 1<>1

I always use:

$hellFreezesOver = False

do
;stuff
until $hellFreezesOver

... which does exactly the same but explains it better

[hmsSurprise]

The why of it is that sometimes we just want to run a short throwaway script for a few minutes perhaps as a debugging aid and then it can just be killed by clicking Tools>Stop. For instance this little script by JdeB prints to the console window at the bottom of the editor and shows the className of what's under the mouse.

While 1
    ConsoleWrite('ControlGetFocus("") = ' & ControlGetFocus("") & @crlf )
    sleep(1000)
WEnd

And sometimes it is used for things like a GUI Message Loop. See the example at the bottom of the GUIGetMsg help page.

jh

Edited April 18, 2007 by hmsSurprise

[Toady]

while 1 is the same thing as While True. This should explain it better.

$bval = True

While $bval

     $bval = False ;This makes the while loop end

Wend

[PsaltyDS]

I always use:

$hellFreezesOver = False

do
;stuff
until $hellFreezesOver

... which does exactly the same but explains it better

Just to be thorough: While/WEnd and Do/Until perform their tests at different times. So this example is not equivalent to the original post's.

A While loop does the test BEFORE running the code inside the loop. So if the test condition is false to begin with, the code in the loop never gets run.

A Do loop does the test AFTER running the code in the loop. So the code is always run at least once, even if the test condition was always false.

[SadBunny]

Just to be thorough: While/WEnd and Do/Until perform their tests at different times. So this example is not equivalent to the original post's.

A While loop does the test BEFORE running the code inside the loop. So if the test condition is false to begin with, the code in the loop never gets run.

A Do loop does the test AFTER running the code in the loop. So the code is always run at least once, even if the test condition was always false.

I know the difference, but thanks for explaining. Actually in this case what I meant by 'it does the same', was that they both will end up being an infinite loop if not exited in some way like ExitLoop or a change of $hellFreezesOver (in my example that is). But you are right ofcourse.

You could rewrite it to a while loop and still retain my histerically funny contradictionary statement by doing:

$hellFrozeOver = False
While not $hellFrozeOver
; stuff
WEnd

Edited April 18, 2007 by SadBunny

[PsaltyDS]

It was for qwertylol's benefit.

I did think yours was funny, and you inspired me to use this just a little while later in another thread:

$Pigs_Fly = False
Do
        ; Loop forever
Until $Pigs_Fly

[jvanegmond]

While 5

Edited April 18, 2007 by Manadar