John W. Krahn wrote:
> Mike Blezien wrote:
> >
> > Now what I am trying to do, is to read the file, the re-format the output to
> > have every 3 categories on one line, separated by a space, then each line end
> > with a <P>, IE:
> >
> > Animations Backgrounds Buttons<P>
> > Clip_Art Dividers-Bars Flash<P>
> > ... etc....
>
> $ cat test.txt
> Animations
> Backgrounds
> Buttons
> Clip_Art
> Dividers-Bars
> Flash
> Fonts
> Icons
> Interfaces
> Member_Tools
> Names
> Photos
> Presentations
> Screen_Savers
> Templates
> Textures
> Wallpaper
> $ perl -pe'++$a%3?y/\n/ /:s/$/<P>/' test.txt
> Animations Backgrounds Buttons<P>
> Clip_Art Dividers-Bars Flash<P>
> Fonts Icons Interfaces<P>
> Member_Tools Names Photos<P>
> Presentations Screen_Savers Templates<P>
You really don't like whitespace do you John :-)
You're missing
Textures Wallpaper<P>
which will be in the output file but without the trailing <P>. This is roughly
how I started, but had to add to it to print that trailing paragraph. In the
process, by the way, I discovered that:
($test += 1) %= 3;
works fine, while
(++$test) %= 3;
doesn't, which must mean that ++$test returns the value of the variable
rather than the variable itself. I could understand this with $test++, but
there's no reason that I can think of to make the pre-increment work
this way.
Cheers,
Rob
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