implicitVars [Was: Re: Best Practices in Rev development]

[Joe Lewis Wilkins]

Hi David,

Even in HC, I would have initiated the var lineCount to zero (put 0  
into lineCount) before attempting to add something to it, in which  
case if someLines was empty it would already have a valid value to be  
returned.

Joe Wilkins

On Jun 30, 2007, at 5:41 AM, David Bovill wrote:

> Firstly there was a typo in the example - but it also seems I was  
> wrong. Its
> an old habit that perhaps was justified a long time ago?
>
> function countLines someLines
>     repeat for each line someLine in someLines
>       add 1 to lineCount
>     end repeat
>     return lineCount
> end countLines
>
> I do remember having errors in handlers where an a variable that  
> was first
> declared/initiated inside a repeat loop (in this case "lineCount")  
> would
> return the literal text "lineCount' and not empty if the repeat  
> loop was
> never entered into (ie someLines) was empty - maybe it was just in  
> a version
> of the debugger - no idea.
>
> Well one bad old habit fixed :)
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