Simple question about deleting an object from a Ruby array

Question

I have a Ruby (1.9.2) array which I need to remove an object from.

[object1, object2, object3]

At the moment I'm doing

array.delete_at(1)

which removes the object, but then there is an empty array spot at that index.

[object1, , object3]

How do I remove an object so that the array is resized so that there is no empty spot in the array?

[object1, object3]

Thanks for reading.

For future reference, if you have an array with nil elements, you can use Array.compact to strip them out. — the Tin Man
– the Tin Man, Commented Nov 18, 2010 at 17:36
Not sure why your question got downvoted, but I did a +1 to it because it's a valid question. — the Tin Man
– the Tin Man, Commented Nov 18, 2010 at 17:38

Nakilon · Accepted Answer · 2010-11-18 13:15:55Z

4

irb> a = [1,2,3]
=> [1, 2, 3]
irb> a.delete_at 1
=> 2
irb> a
=> [1, 3]

No spots here...

answered Nov 18, 2010 at 13:15

Nakilon

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1 Comment

Confirmed, with 1.8.7, 1.9.1, and 1.9.2

DanneManne · Accepted Answer · 2010-11-18 13:14:35Z

0

I think slice! is the method you're looking for

>> arr = [object1, object2, object3]
[object1, object2, object3]

>> arr.slice!(1)
object2

>> arr
[object1, object3]

answered Nov 18, 2010 at 13:14

DanneManne

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