1 files changed, 9 insertions, 0 deletions
diff --git a/prelude.rb b/prelude.rb
index b1e477a3ea..ee78b44cc5 100644
--- a/prelude.rb
+++ b/prelude.rb
@@ -20,3 +20,12 @@ module Kernel
 
   private :pp
 end
+
+autoload :Set, 'set'
+
+module Enumerable
+  # Makes a set from the enumerable object with given arguments.
+  def to_set(klass = Set, *args, &block)
+    klass.new(self, *args, &block)
+  end unless instance_methods.include?(:to_set) # RJIT could already load this from builtin prelude
+end