Detect which elements were added to an array in ruby

Asked Apr 06 '18 at 13:07

Active Apr 06 '18 at 13:19

Viewed 59 times

I have 2 arrays :

arr1 = [1,2,3,4]
arr2 = [1,2, 82, 167,3,79,4]

I want to implement a function that realize the following

new_elems(arr1, arr2)
#=> [82,167,79]

Is there a ruby function for this?

Thank you

EDIT:

Array#- would answer to this question. What about the performances then ? Let's say I have a thousands elements array. Would Array#- have acceptable performances ?

edited Apr 06 '18 at 13:19

asked Apr 06 '18 at 13:07

user3442206

Can the arrays contain duplicates? – Stefan Apr 06 '18 at 13:20
1

_"Would Array#- have acceptable performances?"_ – what is acceptable? – Stefan Apr 06 '18 at 13:21
If you want to ask another question - just do it. – Ilya Apr 06 '18 at 13:22

Detect which elements were added to an array in ruby

0 Answers0