in reply to Typeglobs and constant variables

If you don't want to declare with our or use constant (maybe also take a look at Readonly, but that seems to exact a speed penalty (Update: see thread Module Readonly, esp. the most recent reply)),  $::myVar is a little bit less typing than  $main::myVar (well, at least as long as you're in the  main package). 

>perl -wMstrict -le
"*myVar = \3.14159;
 print $::myVar;
"
3.14159

[download]

Replies are listed 'Best First'.
Re^2: Typeglobs and constant variables
by kcott (Archbishop) on May 31, 2013 at 07:04 UTC
[reply]
      My preference would be for Const::Fast. My reasons for this are in "Re: Use of Constants"

      One caveat -- beside the build problem -- of that module that it fails to mention, is that its "constants" aren't (compile-time) constants, but rather runtime variables that cannot be varied [sic], and thus they do not trigger Perl's compile-time optimisations.

      For me, that issue alone negate the purpose of using constants almost completely. Combined with the other two issues render it a non starter.

      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".
      In the absence of evidence, opinion is indistinguishable from prejudice.
[reply]
[reply]

In Section Seekers of Perl Wisdom