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-rw-r--r--lib/set.rb2
1 files changed, 1 insertions, 1 deletions
diff --git a/lib/set.rb b/lib/set.rb
index 7832c848cf..852c13a534 100644
--- a/lib/set.rb
+++ b/lib/set.rb
@@ -854,7 +854,7 @@ module Enumerable
# Needs to `require "set"` to use this method.
def to_set(klass = Set, *args, &block)
klass.new(self, *args, &block)
- end
+ end unless method_defined?(:to_set)
end
autoload :SortedSet, "#{__dir__}/set/sorted_set"