Re: Global Variables

[Cubes]

Put a my $shipment_request_id before the if block, in the same block where you later use the variable (and remove the my inside the if).

[kmullin]

Wonderful, that did it. So, you need to define variables before getting into a block, because if you declare them in a block, they are local to the block?

[shmem]

Yes. Each block is a scope. Even bare curlies (without any flow control statements) make a block.

use strict;
{
    my $foo = 2;
    {
        my $foo = 1;    # masks outer $foo
        my $bar = $foo;
        print "foo is '$foo'\n"; # foo is '1'
    }
    print "foo is '$foo'\n";     # foo is '2'
    print $bar; #                # error, $bar not visible here
    my $foo;                     # warning: $foo already declared
                                 # as lexical in this scope.
}
print "foo = $foo\n";            # error, $foo not visible here

[moritz]

Exactly.

[jrsimmon]

Well...close, but not exactly. If you are using "use strict", which you evidently are, this is 100% correct. But you should know that without the strict option, a variable can be declared anywhere simply by using it. When not using the strict constraints, the best way I know to describe scoping is "global once declared".

[johngg]

But you should know that without the strict option, a variable can be declared anywhere simply by using it.

IMHO, since kmullin is a self-confessed mewbie, you should add a strong health warning to that statement, perhaps something along these lines. Don't be tempted to turn off strictures to silence intractable compilation errors; always use strict;.

Cheers,

JohnGG