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Philosophy of for loops [message #21521]

Mon, 28 August 2000 00:00

tclement
Messages: 5
Registered: August 2000

Junior Member

Hello, again, everyone!

I was just wondering what the general concensus of the "IDL Expert
Programmers" was on the use of for loops. When I first learned IDL, I
remember getting from someone or somewhere the mantra "for loops are evil"
because they take up so much time. Of course, as I learn more and watch
what goes on in this group, it seems like "for loops are sometimes evil"
would be a better mantra. The question then becomes, when do they become
evil?

In response to my thread on summing diagonal elements, Craig said that for
loops aren't always bad if you can do a lot at once, and his code proves
that you can have some fast loops.

So what defines a slow loop? Is it having a bunch of accesses to
sub-elements of arrays? Is it just having a bunch of statments? I suppose
I could do some tests of my own, and I have a little, but it's much more
fun to hear what you all have to say on the subject. I wouldn't have seen
any IDL-ku if I just kept my thoughts to myself!

Todd

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[Message index]

		Philosophy of for loops By: tclement on Mon, 28 August 2000 00:00
		Re: Philosophy of for loops By: edward.s.meinel on Thu, 31 August 2000 06:40
		Re: Philosophy of for loops By: Craig Markwardt on Thu, 31 August 2000 08:51
		Re: Philosophy of for loops By: promashkin on Thu, 31 August 2000 08:46
		Re: Philosophy of for loops By: Craig Markwardt on Wed, 30 August 2000 00:00
		Re: Philosophy of for loops By: Struan Gray on Wed, 30 August 2000 00:00

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