Question

I am trying to create a intersection statement using a foreach loop
for example

cand[0][1,2,5]
cand[1][2,5,6]
@result = cand[0] & cand[1]

with a for each

  intersec = Array.new
  cand.each do |c|
    intersec = intersec & c
  end
  @result = intersec

I get an empty array

Thanks

Alex

Answer 1

I think you are trying to do something like

cand[0] & cand[1] & cand[2]

you can do this using

intersection = cand.reduce(:&)

Let me know if it works