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Re: what is the scope of my $x=$x

by schwern (Scribe)
on Jun 05, 2006 at 19:01 UTC ( #553676=note: print w/replies, xml ) Need Help??


in reply to what is the scope of my $x=$x

The real answer is "don't do that".

"my $x" and "$x" here are two different variables, there is nothing magical about them having the same name. "my $x" contains a copy of "$x". "my $x" exists only for the life of its scope and masks "$x". It should be clear now why you do not want to use the same variable name for an inner scope, the overlapping names make it really hard to remember what's going on or to even talk about it.

(local $x = $x is somewhat different)

Use a different name. Then it will become clear what the scope of each variable is and the issue goes away. I can't give you a good name without any context, and $x is an awful name to begin with, but even "my $copy_x = $x" is better.

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[Corion]: Oof - "Anyway, if it is not obvious, please keep this discussion entirely confidential for now.", as seen on a public mailing list ;)
[Discipulus]: uh no choroba.. i do not practice much with online putyour image sites:can you suggest one (that possibly remove the pic after few days)?
[choroba]: Corion a bug report?
[choroba]: I have no idea :-( I used to post to photobucket.com, but they don't seem to feature "private" pictures in the free version now
[Discipulus]: dazz i'm not an experts but i think it would be possible
[Corion]: dazz: I think Image::Magick can "read" from an in-memory filehandle
[Corion]: choroba: No, some general admin discussion of how to handle (company) user accounts
[Discipulus]: might be it is necessary to pass the pic data like MIME::Base64:: encode( data..

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