Re^3: Avoiding Global Vars

One point to clarify is that the reason it bugs me, apart from wanting vars to only live within the scope where they are needed, is that I might re-use the name $vrx later, with possible side-effects.

If you use warnings, you'll get a warning if you redefine a new my $vrx in the same scope as the first. If it's not in the same scope, then it'll be a different $vrx, so there should be little to no chance of unintended side-effects.

Of course, the better way to deal with it would be to use a more meaningful/distinctive name so that it's unlikely that you'll have cause to re-use the name...

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Re^4: Avoiding Global Vars by Melly (Chaplain) on Sep 23, 2009 at 15:29 UTC
Ah, but I might (stupidly) do something like: my $urx = 0; # no warning on mistyped $vrx print $vrx; # get's old $vrx As for more meaningful/distinctive, vrx, for reasons relating to the specific tech I'm working with, is very meaningful... Thanks again. `map{$a=1-$_/10;map{$d=$a;$e=$b=$_/20-2;map{($d,$e)=(2$d$e+$a,$e2 -$d2+$b);$c=$d2+$e2>4?$d=8:_}1..50;print$c}0..59;print$/}0..20` [download] Tom Melly, pm (at) cursingmaggot (stop) co (stop) uk	[reply] [d/l]

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Re^4: Avoiding Global Vars
by Melly (Chaplain) on Sep 23, 2009 at 15:29 UTC

Ah, but I might (stupidly) do something like:

my $urx = 0; # no warning on mistyped $vrx
print $vrx; # get's old $vrx

As for more meaningful/distinctive, vrx, for reasons relating to the specific tech I'm working with, is very meaningful...

Thanks again.

map{$a=1-$_/10;map{$d=$a;$e=$b=$_/20-2;map{($d,$e)=(2*$d*$e+$a,$e**2
-$d**2+$b);$c=$d**2+$e**2>4?$d=8:_}1..50;print$c}0..59;print$/}0..20
[download]

Tom Melly, pm (at) cursingmaggot (stop) co (stop) uk

[reply]
[d/l]