Please help with this challenge :) for Ruby

Question

I don't get what this means, googling didn't help.

what's the output?
a=[1,10,11,3]
b=[5,1,3]
c =(a|b)&b
print c[1]

don't give me answer just say what "|" here means?

Thanks

Answer 1

They are called bitwise operator not logical operators.

Edited :-

In case of Array they are set operators.

'&' - Intersection
'|' - union

"|" means combination of both a and b with unique elements.

"&" Means common elements in both a and b.

Check this bitwise operators:-

https://www.google.com/amp/s/www.geeksforgeeks.org/ruby-operators/amp/

Check this Set operators :-

http://flats.github.io/blog/2016/02/07/sets-and-set-operators-in-ruby/

Answer 2

Miika You are right. They're called bitwise operator but as you said in case of Array they are set operators.

Answer 3

| and & is a logical operators: | - or, & - and

~ c = (a or b) and b ~

if we take the analogy with JavaScript, then most likely c[1] means to output the second element of the array, since the numbering of arrays starts from zero

Answer 4

Got it! Thank you, guys!

Answer 5

A | is called a bitwise operators they initialize a and b then calculate the answer