If you enable warnings, perl will most times tell you quite clearly what you are doing wrong:
1 == 1; #is True.
1 == 2; #is False.
'a' == 'a'; #is True.
Argument "a" isn't numeric in numeric eq (==) at (eval 6) line 1,
Argument "a" isn't numeric in numeric eq (==) at (eval 6) line 1,
'a' == 'b'; #is True.
Argument "b" isn't numeric in numeric eq (==) at (eval 7) line 1,
Argument "a" isn't numeric in numeric eq (==) at (eval 7) line 1,
'1' == '1'; #is True.
'1' == '2'; #is False.
'1' == '1foo'; #is True.
Argument "1foo" isn't numeric in numeric eq (==) at (eval 10) line 2,
'1' == 'foo1'; #is False.
Argument "foo1" isn't numeric in numeric eq (==) at (eval 11) line 1,
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
Lingua non convalesco, consenesco et abolesco. -- Rule 1 has a caveat! -- Who broke the cabal?
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.
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