Re^3: Installing Sybase::DBlib problems

yeah i tried the logical route but failed miserably. I still get the same error message...

if($param eq "send"){
  sendMounts()
}
elsif($param eq "recv")
{  
  use lib './lib';  
  use Sybase::DBlib;
}
[download]

So the senders don't even need the Sybase::DBlib but the script still dies on use Sybase::DBlib

Comment on Re^3: Installing Sybase::DBlib problems Download Code

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Re^4: Installing Sybase::DBlib problems by shmem (Chancellor) on Nov 20, 2008 at 13:28 UTC
use is compile time. It gets executed regardless of the `elsif` clause. You could use require: `elsif($param eq "recv") { use lib './lib'; require Sybase::DBlib; Sybase::DBlib->import; # if any imports }` [download]	[reply] [d/l] [select]
Re^4: Installing Sybase::DBlib problems by almut (Canon) on Nov 20, 2008 at 13:29 UTC
That's not the way to do it. `use` statements are being executed at compile time, and the condition is being evaluated at runtime. That's what the if module is for... (or use `require` instead of `use`)	[reply] [d/l] [select]
Re^5: Installing Sybase::DBlib problems by wilko (Acolyte) on Nov 20, 2008 at 13:46 UTC
Thanks almut and all Monks who offered their wisdom! I didn't know about the 'if' module `use lib './lib'; use if $ARGV[0] eq "recv", Sybase::DBlib;` [download] Regards John	[reply] [d/l]
Re^6: Installing Sybase::DBlib problems by almut (Canon) on Nov 20, 2008 at 14:01 UTC
Just two more things to be aware of. It's usually better to specify the module name as a string (`"Sybase::DBlib"`)¹, otherwise you'd get a "Bareword ... not allowed" error when running under `"use strict"`. Second, the `"use if ..."` condition is tested at compile time. In this particular case with `$ARGV[0]` this is not a problem, because the variable is initialized early on. But if you use some other variable, you might need to wrap its assigment in a `BEGIN {...}` block... ___ ¹ only with `"use if"`, that is — with plain `"use"`, in contrast, a bareword is needed.	[reply] [d/l] [select]