Re: use vs require

On Thu, Jan 22, 2009 at 17:33, ben perl <ben.perl3@xxxxxxxxx> wrote:
Hi Everyone,
I am could never understand the difference between use vs require? If
"require" is older way of including modules, why not just make it obsolete.
snip

Well, first off, because use uses require. The use looks something
like this internally

BEGIN {
require Module;
import Module args_to_use;
}


There is also a difference in when they run. Because of the BEGIN
block, use statements occur at compile time, so it is not possible to
conditionally load a module (without eval). The require function runs
at runtime, so you can say things like

if ($use_module_foo) {
require Module::Foo;
import Module::Foo;
}

--
Chas. Owens
wonkden.net
The most important skill a programmer can have is the ability to read.
.

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