Using quote-like-operators or quotes in the perl's printf -

reading perl sources saw many times next construction:

printf qq[%s\n], getsomestring( $_ );

but usually written as

printf "%s\n", getsomestring( $_ );

the question:

the perlop doesn't mention this.

you can use qq() alternative double quote method, such when have double quotes in string. example:

"\"foo bar\""

looks better when written

qq("foo bar")

when in windows cmd shell, uses double quotes, use qq() when need interpolation. example:

perl -lwe "print qq($foo\n)"

the qq() operator -- many other perl operators such s///, qx() -- handy demonstrate because can use character delimiter:

qq[this works] qq|as this| qq#or this#

this handy when have many different delimiters in string. example:

qq!this (not) "hard" quote!

as best practice, use whatever more readable.

HPH