Bryan Harris wrote:
>
>>chen li wrote:
>>
>>>I want to calculate the mean of an array. I know how
>>>to let the job done by using a loop. But I just wonder
>>>if Perl has the short-cut/built-in function for this.
>>>
>>>my @data=(1,1,1);
>>>
>>>mean=(1+1+1)/3=1;(Any perl built-in function for
>>>this?)
>>my $mean = do { my $s; $s += $_ for @data; $s / @data };
>
> I can't believe I just beat John in perl golf, by 14 strokes!
>
> (Anyone who knows me knows I just got lucky on that hole...)
Well, if you want to golf that:
my$mean=(map$a+=$_/@data,@data)[-1];
John
--
use Perl;
program
fulfillment
--
To unsubscribe, e-mail: [EMAIL PROTECTED]
For additional commands, e-mail: [EMAIL PROTECTED]
<http://learn.perl.org/> <http://learn.perl.org/first-response>
