Re: I don't understand a piece of this code (What is qw()? How does qw() work?)

[Anonymous Monk]

Remember I am geting an unhelpful error message. Not sure how to debug it. ?

Remember Tutorials: Basic debugging checklist , brian's Guide to Solving Any Perl Problem?

Second verse, same as the first, go fishing :)

To see if your code is what you thought it was, use B::Deparse

$ perl -MO=Deparse,-p crates
($what = '[box]');
foreach $_ (('in[box]', 'out[box]', 'white[sox]')) {
    if (/\Q$what\E/) {
        print("$_ matched!\n");
    }
}
crates syntax OK

Hopefully that code you should recognize ( perlintro if you don't)

For a word explanation see perlop#Quote and Quote like Operators, qw/STRING/, Quote and Quote-like Operators, Modern Perl pdf page 35 :)

I don't know how to stop this site from interpolating (correct word?) the brackets.

use code ( <c>[box]</c> ) tags or html enities, see PerlMonks FAQ, Markup in the Monastery

See also How do I compose an effective node title?, an effective title might "What is qw()?" or "How does qw() work?"