Beefy Boxes and Bandwidth Generously Provided by pair Networks
Perl: the Markov chain saw
 
PerlMonks  

Re: Non-destructive array processing

by runrig (Abbot)
on Jan 20, 2003 at 23:34 UTC ( #228523=note: print w/ replies, xml ) Need Help??


in reply to Non-destructive array processing

Nice trick. I like it as a sort of answer to LISP-like linked lists without having to resort to 2-element array references:

my @array = qw(a b c d); my $r = sub { \@_ }->(@array); my $a = cdr($r); print "arr: @array\n"; print "a: @$a\n"; print "r: @$r\n"; $array[2]="hello"; print "arr: @array\n"; print "a: @$a\n"; print "r: @$r\n"; sub cdr { my $r = shift; my $a = sub { \@_ }->(@$r); shift @$a; $a; }


Comment on Re: Non-destructive array processing
Download Code

Log In?
Username:
Password:

What's my password?
Create A New User
Node Status?
node history
Node Type: note [id://228523]
help
Chatterbox?
and the web crawler heard nothing...

How do I use this? | Other CB clients
Other Users?
Others about the Monastery: (5)
As of 2015-04-18 12:48 GMT
Sections?
Information?
Find Nodes?
Leftovers?
    Voting Booth?

    Who makes your decisions?







    Results (352 votes), past polls