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Ruby

Luke Buśk
Luke Buśk
21,598 Points
Posted by Luke Buśk
Luke Buśk
21,598 Points

Usage of Set in Ruby?

Can someone give me an example when it is better to use Sets and when it is better to use Arrays? I would love a real world example where Set is a better choice than Array.

1 Answer

Dylan Shine
Dylan Shine
17,565 Points
Dylan Shine
Dylan Shine
17,565 Points

Since sets are immutable, you could use them to make a list as a key in a hash.

require "set"

a = Set[1,2]
hash = {a => "My key is a set"}

This is just one simple example but you get the idea.

Hope that helps, Dylan