[clue-tech] increment weather

[dennisjperkins at comcast.net]

----- Original Message ----- 
From: "David L. Anselmi" <anselmi at anselmi.us> 
To: "CLUE technical discussion" <clue-tech at cluedenver.org> 
Sent: Monday, February 22, 2010 11:05:11 PM GMT -07:00 US/Canada Mountain 
Subject: Re: [clue-tech] increment weather 

David L. Willson wrote: 
> I have a loop-counter that I want to increment from within the loop, having found that the next 
> two items in the array I'm iterating through belong to me. How can I do that? 
> 
> This illustrates my problem: 
> 
> for i in $(seq 10) 

What Dennis said. Your i isn't a loop counter, it's a list iterator that gets assigned at the 
beginning of each pass. Compare to: 

for i in foo bar baz 

I think in PHP there's an indexer that you can tweak on arrays but I don't think so in shell. 

But even on Dennis's form (or Jed's while loop, which is essentially the same) I wonder whether 
in-loop mods are a good idea. Remember what Kernighan said about debugging being harder than coding... 


Good point. I have used it, but usually it's better to start a new iteration. I think bash has a command for this purpose. It might be called "continue". 
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