notes_part_9.txt

-------------------- Notes on Modern Perl (Chromatic, 2016) -------------------

Default scalar variable: $_

"Equivalent to saying 'it'." For example:
    chomp $_;
    chomp;
Are equivalent.
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Default array variable: @_

"Equivalent to saying 'they' or 'them'." For example:
    shift @_;
    shift;
Are equivalent.
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These two statements are equivalent:
readline $fh;
<$fh>;
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@ARGV contains command-line arguments provided to the program.
Exception: if you read from the null filehandle <>, Perl will treat every
element of @ARGV as the name of a file to open for reading.
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