Beefy Boxes and Bandwidth Generously Provided by pair Networks
Perl Monk, Perl Meditation
 
PerlMonks  

Re: Lexical vs. Package Variables (With a little local thrown in)

by ant9000 (Monk)
on Jun 20, 2003 at 08:28 UTC ( #267482=note: print w/replies, xml ) Need Help??


in reply to Lexical vs. Package Variables (With a little local thrown in)

I find your explanations nice and clear; maybe you could also append the output of your scripts, just to make your points even easier to grasp.
A note about local: it's real use is for temporarily overwriting Perl's automatic variables, which cannot be redeclared as lexicals, for instance
#here $/ is usually a newline (on Unix, at least) { #localize the input record separator and undefine it local $/=undef; #now reading from STDIN yelds the entire contents at once my $whole_file=<>; #do what you like with lexical $whole_file #... } #here $/ is restored back to its original value

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://267482]
help
Chatterbox?
and all is quiet...

How do I use this? | Other CB clients
Other Users?
Others wandering the Monastery: (10)
As of 2018-07-16 10:46 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?
    It has been suggested to rename Perl 6 in order to boost its marketing potential. Which name would you prefer?















    Results (333 votes). Check out past polls.

    Notices?