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-rw-r--r--activesupport/lib/active_support/core_ext/hash/except.rb1
1 files changed, 1 insertions, 0 deletions
diff --git a/activesupport/lib/active_support/core_ext/hash/except.rb b/activesupport/lib/active_support/core_ext/hash/except.rb
index 2f6d38c1f6..e31c7c61e4 100644
--- a/activesupport/lib/active_support/core_ext/hash/except.rb
+++ b/activesupport/lib/active_support/core_ext/hash/except.rb
@@ -1,3 +1,4 @@
+# frozen_string_literal: true
class Hash
# Returns a hash that includes everything except given keys.
# hash = { a: true, b: false, c: nil }