Question

I am using an Array in Ruby as something similar to a linked list.
Thus I have ary = [1,2,3]
To insert a node I do ary.insert(2,99) resulting in [1,2,99,3]

Now the question:
How would I do the opposite??
I wish there existed a function ary.extract(2) that would return 99 and leave my array in the state [1,2,3]

Answer 1

slice will do the trick:

a = [1,2,99,3]
v = a.slice! 2

p v
# => 99

p a
# => [1, 2, 3]