Ruby removing duplicates in enumerable lists

Question

Is there a good way in ruby to remove duplicates in enumerable lists (i.e. reject, etc.)

Answer 1

Well the strategy would be to convert them to arrays and remove the duplicates from the arrays. By the way lists are arrays in ruby in any case so I'm not sure what you mean by "enumerable lists"

Answer 2

You can do a conversion to a Set, if element order is not important.

http://www.ruby-doc.org/core/classes/Set.html

Answer 3

For array you can use uniq() method

a = [ "a", "a", "b", "b", "c" ]
a.uniq   #=> ["a", "b", "c"]

so if you just

(1..10).to_a.uniq

or

%w{ant bat cat ant}.to_a.uniq

because anyway almost every methods you do implement will return as an Array class.