Re: 'our' scoping

'our' is just a lexically-scoped compiler directive altering the behviour of 'use strict' for a global variable. The variable is still accessible from all all parts of a program, but within the scope of the 'our' declaration, it is immune from the ravages of 'use strict', eg

$foo = 1;
use strict;
{
    our $foo;
    $foo++;    # $::foo now 2
}
{
    no strict;
    $foo++;    # $::foo now 3
}

# dies with
# Global symbol "$foo" requires explicit package name
$foo++;
[download]

Dave.

Comment on Re: 'our' scoping Download Code

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Re: Re: 'our' scoping by tilly (Archbishop) on Jun 01, 2004 at 23:37 UTC
Your description of how our works is subtly wrong. The following demonstrates this, without any strict in the way. `package foo; our $foo = "I'm in foo"; package bar; our $foo = "I'm in bar"; package foo; print "1) $foo\n2) $foo::foo\n3) $bar::foo\n";` [download] Note that our caused you to access $bar::foo even when you'd have otherwise expected to access $foo::foo. For giggles and grins, mix our with $_ when you aren't in package main. Tons of confusion!	[reply] [d/l]

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Re: Re: 'our' scoping
by tilly (Archbishop) on Jun 01, 2004 at 23:37 UTC

package foo;
our $foo = "I'm in foo";

package bar;
our $foo = "I'm in bar";

package foo;
print "1) $foo\n2) $foo::foo\n3) $bar::foo\n";
[download]

our

For giggles and grins, mix our with $_ when you aren't in package main. Tons of confusion!

[reply]
[d/l]