Progresively splicing an array

[Guest_imported]

if I have an array like this:
@data = one two three four

and I have an array of numbers which are reference numbers to the items in the first array which I want to delete (e.g. @num = 0, 2 to leave two & four in the first array), I obviously have problems doing a foreach loop:

foreach $ref (@num){
splice(@data, $ref, 1);
}

because the reference numbers of the first array change as I'm splicing them.

Does anyone know how to get round this?

 

[goBoating]

reverse sort your array of reference numbers so that as you delete elements from the main array the references to later elements won't change.

@splice_order = reverse sort(@ref_numbers);
# then,
foreach $ref (@splice_order) { splice(@data, $ref, 1); }

I think that will do what you want.

HTH


keep the rudder amid ship and beware the odd typo