(MeowChow) Re2: Syntax for Slice of dereferenced array

Try

($x,$y,$s)= @{$self}{'x,y,s'};
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Unless your key is of the form /\w+/, Perl will interpret it as code returning a list of keys.

update: <CajunMan>Confusion</CajunMan> ... didn't understand what you were trying to do - if you want trouble-free barewords, do it like so:

($x,$y,$s)= @{$self}{x=>y=>s=>};
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Of course, the form you have it in now makes more sense, unless you're obfuscating.

   MeowChow                                   
               s aamecha.s a..a\u$&owag.print

Comment on (MeowChow) Re2: Syntax for Slice of dereferenced array Select or Download Code

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Re: Re: Re: Syntax for Slice of dereferenced array by John M. Dlugosz (Monsignor) on Jul 22, 2001 at 04:14 UTC
Huh? Isn't `'x,y,s'` a single key? I'm using `'x','y','s'` now. But, basically the bareword thing doesn't work on slices, right?	[reply] [d/l] [select]
(tye)Re: Syntax for Slice of dereferenced array by tye (Sage) on Jul 22, 2001 at 10:27 UTC
Mostly. Perl only gives special treatment to single barewords (with optional white space) used as hash keys (inside `$h{`here`}` or before `=>`). @h{x,y,z} isn't using a single bareword so it doesn't get special treatment so it gets parsed as `"x",tr,z` and then goes looking for two more commas to finish off the tr. Note that "x" is also a Perl keyword but can still be used as a bareword here since "x" is only a binary operator and there is no left-hand side in front of "x" so Perl won't treat it as the operator. However, you can write a slice and give it a single key, @h{y}, and the special bareword rules apply there. It isn't the "slice" that breaks the rule, it is having something more than a single bareword (+whitespace). - tye (but my friends call me "Tye")	[reply] [d/l] [select]