Use `keys.each` instead of unstable `each_keys`.
MODIFY
mrbgems/mruby-hash-ext/mrblib/hash.rb
mrbgems/mruby-hash-ext/mrblib/hash.rb
@@ -396,7 +396,7 @@ class Hash
def transform_keys(&b)
return to_enum :transform_keys unless block_given?
hash = {}
- self.each_key do |k|
+ self.keys.each do |k|
new_key = yield(k)
hash[new_key] = self[k]
end
@@ -416,7 +416,7 @@ class Hash
def transform_values(&b)
return to_enum :transform_values unless block_given?
hash = {}
- self.each_key do |k|
+ self.keys.each do |k|
hash[k] = yield(self[k])
end
hash

Use `keys.each` instead of unstable `each_keys`.