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Re: Linked lists as arrays: inserting values

by holli (Monsignor)
on Sep 25, 2006 at 15:54 UTC ( #574767=note: print w/replies, xml ) Need Help??

in reply to Linked lists as arrays: inserting values

I was pretty sure there was something for this in List::MoreUtils, but as it turned out there isn't. So I came up with this:
sub insert_array_elem { my ($ra, $elem, $index) = @_; # insert $elem before $ra->[$index] my $idx = 0; insert_after { $idx++ == $index-1; } $elem => @{$ra}; }
This doesn't work for the edge cases (first and last element), but hey, that's what pop and friends are there for. Maybe you could write an email to the author of List::MoreUtils to provide an insert_at_index function?.

holli, /regexed monk/

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Re^2: Linked lists as arrays: inserting values
by radiantmatrix (Parson) on Sep 25, 2006 at 17:13 UTC
      Yup. I benchmarked my solution against the other two and it is way slower. But: It looks best ;-)

      holli, /regexed monk/

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