Beefy Boxes and Bandwidth Generously Provided by pair Networks
No such thing as a small change

Re^5: Is there a more functional regex syntax?

by BrowserUk (Pope)
on Sep 18, 2012 at 20:20 UTC ( #994354=note: print w/replies, xml ) Need Help??

in reply to Re^4: Is there a more functional regex syntax?
in thread Is there a more functional regex syntax?

Some parts of List::Util are a little ill-conceived. For example, the existence of separate min and minstr functions (and max/maxstr).

Two points:

  1. All of List::Utils function except shuffle, can be reproduce using reduce alone.

    Adding uniq() would be nice if it ran more quickly than a pure perl implementation: sub uniq{ my %h; undef @h{ @_ }; keys %h }

  2. The need for min/minstr is forced by being non-core.

    min amd minstr run more quickly than their equivalents using reduce, because they avoid the need to callback to Perl for every item.

    Sort gets away with using a callback by recognising the simple patterns of callback block {$a<=>$b} & {$a cmp $b} and bypassing them in favour of dedicate opcodes for those simple cases.

    Effectively, sort{$a <=> $b } is the subroutine name. sortn would be shorter, easier to type and remember. Ditto for sorts

    List::Util doesn't have that option because it is outside the core.

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.

RIP Neil Armstrong

Log In?

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://994354]
and all is quiet...

How do I use this? | Other CB clients
Other Users?
Others meditating upon the Monastery: (2)
As of 2018-05-26 16:21 GMT
Find Nodes?
    Voting Booth?