Is it possible to generate the result 'X' in such a way that I can automatically deduce the method that was used to generate that result (without looking at the source code) by evaluating one or more quantifiable measures of fitness?

Where 'X' is the sum of the numbers 1 .. 1_000_000. 

p:\test>x1
500000500000

p:\test>x2
500000500000

[download]

The programs (in no particular order). 

map{ $sum += $_ } 1 .. 1000000; print $sum;

[download]
and 
$sum += $_ for 1 .. 1000000; print $sum;

[download]

External metric: One of them uses 3MB, the other 96MB :)

Examine what is said, not who speaks.
"Efficiency is intelligent laziness." -David Dunham
"Think for yourself!" - Abigail

In reply to Re: Re: When would you choose foreach instead of map? by BrowserUk
in thread When would you choose foreach instead of map? by jpfarmer

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