Thank you. The useful note about CORE, in particular, is new to me.
cts
--- On Sun, 6/24/12, Rob Dixon rob.di...@gmx.com wrote:
From: Rob Dixon rob.di...@gmx.com
Subject: Re: how to do a reference to a func in Math::Trig
To: Perl Beginners beginners@perl.org
Cc: Charles Smith cts.priv
Hi,
I'm experimenting with Math::Trig and would like to be able to pass the
function in as a parameter:
$f = $opts{f} || sin;
...
$f($w);
Undefined subroutine main::sin called at (eval
9)[/usr/lib/perl5/5.14.2/perl5db.pl:640] line 2.
I have also tried:
$f = Math::Trig::sin;
Hello Shawn, thank you for answering.
I'm sorry, I was a bit sloppy with my example and so maybe unclear about my
question ...
It's not about the precise syntax of getting a reference to a subroutine, but
rather a subroutine in a module.
For example, this pgm is clear:
#!/usr/bin/env perl
: how to do a reference to a func in Math::Trig
To: Charles Smith cts.priv...@yahoo.com
Cc: beginners@perl.org
Date: Saturday, June 23, 2012, 3:28 PM
Charles Smith wrote:
[snip]
But this pgm fails:
#!/usr/bin/env perl
use Math::Trig;
my $a = \Math::Trig::cos;
$a(0);
Undefined
I'm trying to install UR-v0.12 - and encountered a great wizard. But I don't
have root access on my machine. I get
You are not allowed to write to the directory '/usr/lib/perl5/site_perl/5.8.8'
even though I'd entered
Your choice: [] PREFIX=~/lib/perl
Can somebody please explain to me
