in reply to separating replacements

What my formerly anonymous friend is saying is that anywhere that $??? is acceptable, ${???} is also acceptable; and means the same thing.

The consequence of that is that whilst $12 addresses the 12th set of capture brackets; ${1}2 addresses the first set of capture brackets.

With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority". The enemy of (IT) success is complexity.
In the absence of evidence, opinion is indistinguishable from prejudice.

In Section Seekers of Perl Wisdom