As far as these variables go, my limits the scope in such a way that in a different module the variable isn't available.

No one's disputing that.

Here's a slightly more concrete usage, and two instances where the issue happens

You're creating instances of a class before the class's module has been executed, and you're blaming the module? Change 

...

package Problem;

{
   ...
   1;
}

package Main;

...

[download]

to 

...

BEGIN {
   package Problem;
   ...
}

...

[download]

or move the code to a used file. use adds the BEGIN for you.

(By the way, the "1;" is useless, and you misspelled "package main;". And note how "package main;" is no longer needed when you move the package statement into the curlies.)

As for the second issue, 

my $p1 = undef;
BEGIN
{
   $p1 = Problem->new('P11', 'P12', 'P13');
}

[download]

I've already stated I think you're obviously doing something wrong if you're initializing something twice.

In reply to Re^4: Use of uninitialized variables? by ikegami
in thread Use of uninitialized variables? by Zadeh

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