Re: Scoping question

in an expression such as

my $item = $item;
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The first $item on the line is the one you're declaring lexical while the second $item is whatever $item is available in the enclosing scope. Your lexical $item isn't available until after that statement has completely executed.

Perl 6 will change this behavior and make variables available as soon as possible. In order to get the old behavior you'll need to do something like:

my $item = $OUTER::item;
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duff

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Re^2: Scoping question by pg (Canon) on Nov 03, 2004 at 21:00 UTC
As a matter of fact, this even does not work: `use strict; use warnings; my $item = $item;` [download] You will get: `Global symbol "$item" requires explicit package name at a.pl line 4. Execution of a.pl aborted due to compilation errors.` [download] Update: see bpphillips's reply to my post, duff could actually meant what dpphillips detailed below.	[reply] [d/l] [select]
Re^3: Scoping question by bpphillips (Friar) on Nov 03, 2004 at 21:17 UTC
I think your interpretation of duff's example is different than intended. Consider: `use strict; use warnings; my $item = "a"; if(1){ my $item = $item; }` [download] This compiles fine with no errors...	[reply] [d/l]
Re^4: Scoping question by ihb (Deacon) on Nov 04, 2004 at 13:43 UTC
Note that you don't need to have `if (1)`. A block is fine all by itself, and does enforce a new scope. A bare block is a loop construct though while an `if` block isn't, which is important to remember when you use e.g. `last`. `ihb` See perltoc if you don't know which perldoc to read! Read argumentation in its context!	[reply] [d/l] [select]