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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 => '', plp_site => '', do_not_use => 'spamtrap' }

In reply to Re: Perl Idioms Explained - ${\$obj->method} and @{[sort @list]} by Juerd
in thread Perl Idioms Explained - ${\$obj->method} and @{[sort @list]} by broquaint

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