how to take an subarray, and flatten it back into parent array ?

Question

parent = ["A","B","C",["a","b", "c", "d"], "D"]

parent.each do |children|

if children.is_a?

children.flatten # how do i insert it back to parent
# so that this loop can continue looping through the remainder
#including the newly flattened children(a,b,c,d)

end

end

The question is, once an array is discovered, i flatten it, and need it to be inserted it to the original parent array, so that A,B,C,a,b,c,d,D will be looped once.

Answer 1

From the description it seems that you would be able to do

parent.flatten.each do |child|
end