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Re: Use and Require
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From:
wolf blaum
Date:
January 29, 2004 15:02
Subject:
Re: Use and Require
Message ID:
200401292040.45478.wolf.blaum@charite.de
For Quality purpouses, Mallik 's mail on Thursday 29 January 2004 18:57 may
have been monitored or recorded as:
> Dear Perl Gurus,
that must be someone else
>
> What is the difference between Use and Require.
>
try perldoc -f use on your box (or www.perldoc.com):
use Module VERSION LIST
use Module VERSION
use Module LIST
use Module
use VERSION
Imports some semantics into the current package
from the named module, generally by aliasing cer-
tain subroutine or variable names into your pack-
age. It is exactly equivalent to
BEGIN { require Module; import Module LIST; }
except that Module must be a bareword.
VERSION may be either a numeric argument such as
5.006, which will be compared to $], or a literal
of the form v5.6.1, which will be compared to $^V
(aka $PERL_VERSION. A fatal error is produced if
VERSION is greater than the version of the current
Perl interpreter; Perl will not attempt to parse
the rest of the file. Compare with "require",
which can do a similar check at run time.
There is tons more infomation of how use/require are simliar/different.
Enjoy. Wolf
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