Beefy Boxes and Bandwidth Generously Provided by pair Networks
Syntactic Confectionery Delight
 
PerlMonks  

Re: Why doesn't perl optimize this?

by BrowserUk (Pope)
on Jun 04, 2013 at 02:20 UTC ( #1036862=note: print w/ replies, xml ) Need Help??


in reply to Why doesn't perl optimize this?

Why doesn't perl optimize the former code to only produce one huge array?

Because no one has programmed it to do so. And that in major part is because there is no call for it.

The number of occasions when such an optimisation would be triggered is so few. Very few people would construct an anonymous array, from a list, from an existing array, in order to return a reference.

Conversely, the cost of checking for those extremely rare opportunities would have to be paid for every subroutine that returned an array reference.

Its a high-cost, low-benefit complication to the core that no one has seen fit to write.


With the rise and rise of 'Social' network sites: 'Computers are making people easier to use everyday'
Examine what is said, not who speaks -- Silence betokens consent -- Love the truth but pardon error.
"Science is about questioning the status quo. Questioning authority".
In the absence of evidence, opinion is indistinguishable from prejudice.


Comment on Re: Why doesn't perl optimize this?

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://1036862]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others chanting in the Monastery: (9)
As of 2014-08-01 06:29 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    My favorite superfluous repetitious redundant duplicative phrase is:









    Results (257 votes), past polls