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Posted by BH on February 27, 2008, 5:38 pm
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Hi,
Can someone clarify the 3 terms wrt Perl providing with some examples?
Regards,
BH
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Posted by Joost Diepenmaat on February 27, 2008, 5:57 pm
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> Hi,
>
> Can someone clarify the 3 terms wrt Perl providing with some examples?
they're all subroutines. functions and subroutines are the same thing in
perl.
methods are subroutines that are called using method resolution and get
the object passed as the first argument. IOW there methods as such, just
functions that get called using method call semantics.
package Bla;
sub something { print "my arguments are '@_'\n" }
Bla->something(); # call as (class) method
something(); # call as function
Bla::something(); # call as function with explicit package name
my $o = bless {},"Bla"; # make a "Bla" object
$o->something(); # call as object method
--
Joost Diepenmaat | blog: http://joost.zeekat.nl/ | work: http://zeekat.nl/
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Posted by Uri Guttman on February 27, 2008, 5:58 pm
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B> Can someone clarify the 3 terms wrt Perl providing with some examples?
put your question in the BODY of your message. then it reads properly
and it is easier to write replies.
subroutines vs method vs function
subs are perl level routines you code and call.
sub bar {
print "bar was called\n" ;
}
functions are things built into perl. read perldoc perlfunc for a list
and description of them all.
methods are just perl subs that are called via an object or a class
using a object oriented call. read perldoc perlobj for more on that.
uri
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Posted by Joost Diepenmaat on February 27, 2008, 5:59 pm
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> IOW there methods as such, just functions that get called using method
> call semantics.
That should read "there are no methods as such"
--
Joost Diepenmaat | blog: http://joost.zeekat.nl/ | work: http://zeekat.nl/
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Posted by xhoster on February 28, 2008, 1:08 pm
Please log in for more thread options > Hi,
>
> Can someone clarify the 3 terms wrt Perl providing with some examples?
"subroutine" and "function" are basically interchangeable. There is a
tendency to use "function" for built-in ones and "subroutine" for
user-defined ones, but that is a tendency, not a law.
Methods are subroutines invoked in an object-oriented way.
Xho
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