Perl subroutines

[Kevin Brown]

I'm not sure those are the only two ways to look at it. Lots of 
different data types can be passed to a subroutine and the way perl 
handles them does seem to work well for a number of projects that need a 
slightly less restricted method (e.g. BioPerl). Works really well when 
most of the variables you might pass are optional and you don't want to 
have to feed in the default option when you want it to just be default 
to get to a variable that you do want to change.


> It appears that is the closest possible syntax fro what I want to do,
> I suppose if I'm going to write in perl I'll just have to get over
> wanting to do things the way I like and embrace the way perl does
> things, although I'll likely never understand why anyone would rather
> have shorter code than more readable code.
>
> On Fri, Jul 9, 2010 at 10:28 AM, Dale Farnsworth<dale at farnsworth.org>  wrote:
>>> I'm working on a perl script, and I have a lot more experience in ruby
>>> than I do in perl.  As far as I can tell there is no way to explicitly
>>> define arguments for a subroutine in perl, for example
>>>
>>> sub addNums(number1, number2) {
>>>    sum = number1 + number2;
>>>
>>>    return sum;
>>> }
>>>
>>> rather than
>>>
>>> sub addNums {
>>>    number1 = shift;
>>>    number2 = shift;
>>>    sum = number1 + number2;
>>>
>>>    return sum;
>>> }
>>>
>>> is there anyway to do this, and if not does anyone have some advice on
>>> a way to make this a bit more readable in perl?
>>
>> It's been a while since I programmed in perl.  I currently use python
>> after going through a long ruby phase.
>>
>> However, I think the canonical way to do it is:
>>
>> sub addNums($$) {
>>   my ($number1, $number2) = @_;
>>   my $sum = $number1 + $number2;
>>
>>   return $sum;
>> }
>>
>> -Dale
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