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

Re^3: dynamic 2d array

by amarquis (Curate)
on Aug 14, 2008 at 13:45 UTC ( #704349=note: print w/replies, xml ) Need Help??

in reply to Re^2: dynamic 2d array
in thread dynamic 2d array

Depends on how you define it. The text is talking about global variables, which are available to code outside their containing block:

{ $i = 3; } print "$i\n";

Prints 3. Compare with:

{ my $i = 3; } print "$i\n";

Without strict, this prints only a newline. This code declares a lexically scoped $i, which only persists through the end of its enclosing block. One of the best things about strict/warnings is that perl will complain about this kind of thing, possibly saving you a bunch of time hunting down a confusing error in a large program.

Log In?

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://704349]
and all is quiet...

How do I use this? | Other CB clients
Other Users?
Others wandering the Monastery: (6)
As of 2018-03-23 07:36 GMT
Find Nodes?
    Voting Booth?
    When I think of a mole I think of:

    Results (288 votes). Check out past polls.