CODEWITHSUNDEEP
perl
Shantesh
Shantesh

Reputation: 1600

What is qw in Perl?

What does qw stand for? Is there any documentation where I can read about it?

Also, how is it related to array declaration? For example:

#!/usr/bin/perl
@days = qw/Mon Tue Wed Thu Fri Sat Sun/;

Upvotes: 6

Views: 4762

Answers (1)

ikegami
ikegami

Reputation: 385655

I always wonder what is qw stands for!

It stands for "quote words" (or something similar), as it is a quoting construct like single quotes (q/.../ aka '...') and double quotes (qq/.../ aka "..."), but it returns a list of words.

any related document to read on qw ?

The qw operator is documeted in perlop.

qw/Mon Tue Wed Thu Fri Sat Sun/

is equivalent to

split ' ', q/Mon Tue Wed Thu Fri Sat Sun/

how is it related array declaration?

It has no relation to array declaration. Arrays are both declared and defined using my @array (and rarely our @array).

Upvotes: 10

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