Move item in array to another array

Question

Let's suppose that we have arrays x = ['a', 'b', 'c'] and y. Is there an easy way to move, say, the second element of x, to y? So that in the end, x is ['a', 'c'] and y is ['b'].

Answer 1

A special code for this example. It might not work on your other arrays. Instead of actually moving element, let's take the old array apart and construct two new arrays.

x = ['a', 'b', 'c']

x, y = x.partition {|i| i != 'b'}

x # => ["a", "c"]
y # => ["b"]

The delete_at approach is likely better for your situation, but, you know, it's good to know alternatives :)

Answer 2

yep, it would look like this:

y.push x.delete_at(1)

delete_at will delete an element with given index from an array it's called on and return that object