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AppGameKit Classic Chat / [SOLVED] Loops: "FOR index = 1 TO 0"

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Nieb
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Posted: 12th Aug 2016 11:56 Edited at: 12th Aug 2016 11:59
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I've noticed something by accident, if you do this the loop doesn't run at all:

Is this something I could rely on?
Is this intended behavior or is AppGameKit compensating for bad code?

Normally I would do this:
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Preben
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Posted: 12th Aug 2016 12:36 Edited at: 12th Aug 2016 13:00
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if something < 1 then use "step -1" to make it loop, otherwise if something < 1 if will always break out, so you could rely on that.
best regards Preben Eriksen,
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Digital Awakening
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Posted: 12th Aug 2016 13:05
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I believe the C++ equivalent to the FOR loop is <=. So it basically checks if your condition is less than or equal too. Unless your step value is negative. As long as the result is true, the loop will run through.
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Markus
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Posted: 12th Aug 2016 14:13 Edited at: 12th Aug 2016 15:33
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the default step is 1
a to b must be same or b greater
step is optional
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Cybermind
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Posted: 15th Aug 2016 08:41
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It need to look like this:



As Markus says, normally it will go in steps of +1, the for loop ALWAYS counts 1 up unless you type STEP -1, or some other value after the variables. You could also type STEP 3 if you want it go 3 steps up every time it loops, or STEP -10, or whatever
13/0
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BatVink
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Posted: 15th Aug 2016 11:35
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It sounds like you aren't interested in counting backwards in your loop.

In English, the FOR statement is saying:

is Index greater than something yet? If no, process code. If yes, stop processing code.

So you have not broken any rules, and it is a perfectly valid scenario. Unusual, but valid.
This is also valid, and helps to explain your scenario. something can change during the lifetime of the loop...



...and will end after the third loop, because something has become less than i.
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Nieb
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Posted: 15th Aug 2016 15:09
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Interesting, thanks for all the replies! Who would have thought such a simple thing would get so much attention.

Quote: "It sounds like you aren't interested in counting backwards in your loop."

Correct, there are just times in my code where 'something' would equal zero.
Knowing this is normal behavior, i can ditch the "IF something : ... : ENDIF" and tidy up the code!
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janbo
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Posted: 15th Aug 2016 16:36
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If you don't know the step beforehand, you could do:

Pseudocode

Using AGKv2 Tier1
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