in reply to Re^3: Learning Programming, desperately need to know what information is contained in scalar variables
in thread Learning Programming, desperately need to know what information is contained in scalar variables

I see, thank you. I have another question,in this piece of code say "Catastrophic crypto fail!" if $alice eq $bob; what value is $alice eq $bob producing?
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Re^5: Learning Programming, desperately need to know what information is contained in scalar variables
by AnomalousMonk (Archbishop) on Jul 20, 2020 at 16:43 UTC

    These things can be found out by experimentation. Experimentation is easy and highly encouraged. 

    c:\@Work\Perl\monks>perl -wMstrict -le
"use Data::Dump qw(dd);
 ;;
 my $value;
 ;;
 my $alice = 'alice';
 my $bob   = 'alice';
 ;;
 $value = $alice eq $bob;
 dd 'result of evaluating a comparison that is true', $value;
 ;;
 $alice = 'alice';
 $bob   = 'bob';
 ;;
 $value = $alice eq $bob;
 dd 'result of evaluating a comparison that is false', $value;
"
("result of evaluating a comparison that is true", 1)

("result of evaluating a comparison that is false", "")

    [download]
    See also Relational Operators and Equality Operators in perlop.

    Update: Didn't read far enough before posting; question already asked and answered.

    Give a man a fish:  <%-{-{-{-<

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