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Re: Should we deprecate $; ?

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david nicol
May 14, 2003 15:20
Re: Should we deprecate $; ?
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if nobody beats me to it I'll write a sentence or 2 to
insert into perlvar to suggest using $h{(),@a} when you
want to get the multiple emulated dimensions out of an

I use the feature often and find it handy.  The syntax is
nice; I would not want to throw away $; without replacing it
with something else that will understand $h{(),@a} as a
multidimensional hash key.  And I can't OTTOMH produce one
that would not involve eval-stringing a joined map result.

On Tue, 2003-05-13 at 16:56, Rafael Garcia-Suarez wrote:
> $; is the subscript separator for multidimensional array emulation
> (as says perlvar).  Basically it works like this :
>     $ perl -MO=Deparse -e '$x{1,2}'
>     $x{join $;, 1, 2};
> In our Unicode and UTF8 world, it's becoming more and more unsafe to use
> that kind of hack, esp. when better alternative solutions are available.
> I therefore suggest to add to 5.9 a deprecation warning
>     "Use of multidimensional array emulation is deprecated"
> for any use of the implicit join($;,...).
David Nicol, independent consultant and contractor
have a nice day, really. 

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