The reason we cant give an error is because my $foo = "blah" only gets executed if $var is true. However, we dont actually know if $var is true or not until runtime.

So when you call mycode() with no arguments then my $foo = 'blah' is not executed at all. Instead, simply $foo = 'FOO' gets executed, setting $main::foo (you can verify this by printing out $main::foo after you call mycode() with no arguments).

use strict is only supposed to catch compile-time errors (according to its documentation). It should not blow up at runtime.

To do what you expect here you could do something like: 


    my $foo = defined $var ? 'blah' : 'FOO';
or even: 

    my $foo;
    if ($var) {
        $foo = 'blah';
    }
    else {
        $foo = 'FOO';
    }

In reply to Re: Re: Re: static-like persistence of my variable due to trailing conditional by mschout
in thread static-like persistence of my variable due to trailing conditional by meonkeys

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