Delete first instance of matching element from array

Question

Say I have the array [1,2,3,1,2,3] and I want to delete the first instance of (say) 2 from the array giving [1,3,1,2,3]. What\'s the e

Answer 1

Maybe it should become part of stdlib:

class Array
  def delete_first item
    delete_at(index(item) || length)
  end
end