Hi toolic

Nice work, but may I suggest that

> Display the contents of variables using print or warn

> warn "$var\n";

is changed to

warn "<$var>";

?

Two reasons:

• I don't see the point of disabling line and file information from warn by default by appending "\n".

  A beginner might get lost where the error originates.

• A missing chomp is very common, surrounding brackets <...> helps finding them.

  A beginner should be made aware if his variable ends on a newline.

see

C:\>perl
$var = "abc\n";    # trailing newline

warn "$var\n";
warn "<$var>";
warn "$var";

__END__
abc

<abc
> at - line 4.
abc
[download]

update

I just realized that your point 3 covers chomp and detecting whitespace, but I'm still not sure why you're disabling the line info in warn.

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