http://qs321.pair.com?node_id=11120347


in reply to Re: Shouldn't references be readonly?
in thread Shouldn't LITERAL references be readonly? (updated)

> The {} and [] operators construct new aggregates each time they are evaluated.

This might come as a surprise but literals in Perl are always new as you can see by the references.

DB<66> p \1 SCALAR(0x335c4a0) DB<67> p \1 SCALAR(0x335c6f8) DB<68> p \1 SCALAR(0x335cae8) DB<69>

I know there are languages where it's always the same (IMHO do Ruby and Lisp have a syntax for this) but this is not what I mean or asked.

Alas ... few of the respondents here seem to have read the code in the OP and really have a deep grasp of aliases.

Cheers Rolf
(addicted to the Perl Programming Language :)
Wikisyntax for the Monastery

) well undef is an exception, but it's debatable if that's a literal or a constant.

DB<69> p \undef SCALAR(0xfb9098) DB<70> p \undef SCALAR(0xfb9098) DB<71> p \undef SCALAR(0xfb9098) DB<72> p \undef SCALAR(0xfb9098) DB<73> p \"str" SCALAR(0x335d3c0) DB<74> p \"str" SCALAR(0x335d498) DB<75> p \"str" SCALAR(0x335d270)