From perldoc perlop:
qq/STRING/
""STRING""
A double-quoted, interpolated string.
$_ .= qq
(*** The previous line contains the naughty word
"$1".\n)
if /\b(tcl|java|python)\b/i; # :-)
$baz = "\n"; # a one-character string
i.e. qq is just like double quotes.
qw/STRING/
Evaluates to a list of the words extracted out of
STRING, using embedded whitespace as the word
delimiters. It can be understood as being roughly
equivalent to:
split(' ', q/STRING/);
the difference being that it generates a real list
at compile time. So this expression:
qw(foo bar baz)
is semantically equivalent to the list:
'foo', 'bar', 'baz'
Some frequently seen examples:
use POSIX qw( setlocale localeconv )
@EXPORT = qw( foo bar baz );
A common mistake is to try to separate the words
with comma or to put comments into a multi-line
`qw'-string. For this reason, the `use warnings'
pragma and the -w switch (that is, the `$^W' vari-
able) produces warnings if the STRING contains the
"," or the "#" character.
i.e. qw takes a list of words that are whitespace separated and turns
them into an array, split on the whitespace.
On Tuesday, September 17, 2002, at 12:47 AM, Rum Pel wrote:
> hello
>
> perl -e "print qq(@INC)"
> prints the library paths.
> Can somebody tell me what does "qq" do here?
>
> Also, what does "qw" do in the following statement?
>
> use HTTP::Request::Common qw(GET POST);
>
>
> --rp
>
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