Re: Perl Idioms Explained - ${\$obj->method} and @{[sort @list]}

[Juerd]

in reply to Perl Idioms Explained - ${\$obj->method} and @{[sort @list]}

It's important to know that simple string concatenation is more efficient, and often much easier to read.

"method result   - ${ \$obj->method }\n";

"method result   - " . $obj->method . "\n";

An explicit join on space or $" is more efficient than using @{[]}.

"foo @{[ some_list() ]}.";

"foo ${\ join $", some_list() }";

"foo ${\ join ' ', some_list() }";

"foo " . join ' ', some_list();

Easiest to read imho is (s)printf.

printf "method result  - %s\n", $obj->method;

The idiom is also explained in perlfaq4's How do I expand function calls in a string?.

Juerd # { site => 'juerd.nl', plp_site => 'plp.juerd.nl', do_not_use => 'spamtrap' }

[VSarkiss]

I agree strongly. While broquaint's writeup is valuable in explaining these idioms, I don't think it's meant to encourage their use. You've demonstrated several simpler (and better imho) alternatives.

[Aristotle]

Agreed. There is just one occasion where I really like having this idiom handy: here docs. Stuffing a map (or two, or three) inside a heredoc by way of this idiom is a neat poor man's templating engine.

Makeshifts last the longest.