How do I iterate over a set in Ruby?

How do I iterate over a set in Ruby?

You can use the each method to iterate over a set in Ruby. For example:

require 'set'
my_set = Set.new([1, 2, 3])
my_set.each do |element|
  puts element
end

Can I use other methods like map or select with sets?

Yes, you can use methods like map and select with sets. They will return a new set with the results. For example:

new_set = my_set.map { |x| x * 2 }

What about using each_with_index?

You can use each_with_index to get both the element and its index. Here's how:

my_set.each_with_index do |element, index|
  puts "Element: #{element}, Index: #{index}"
end

Are there any performance considerations when using sets?

Sets are generally efficient for membership tests and unique collections, but keep in mind that operations like iteration may vary in performance based on the size of the set.