diff options
Diffstat (limited to 'activesupport/lib/active_support/core_ext/hash/slice.rb')
| -rw-r--r-- | activesupport/lib/active_support/core_ext/hash/slice.rb | 16 |
1 files changed, 8 insertions, 8 deletions
diff --git a/activesupport/lib/active_support/core_ext/hash/slice.rb b/activesupport/lib/active_support/core_ext/hash/slice.rb index 1d5f38231a..2bd0a56ea4 100644 --- a/activesupport/lib/active_support/core_ext/hash/slice.rb +++ b/activesupport/lib/active_support/core_ext/hash/slice.rb @@ -1,11 +1,13 @@ +# frozen_string_literal: true + class Hash - # Slices a hash to include only the given keys. Returns a hash containing + # Slices a hash to include only the given keys. Returns a hash containing # the given keys. - # + # # { a: 1, b: 2, c: 3, d: 4 }.slice(:a, :b) # # => {:a=>1, :b=>2} - # - # This is useful for limiting an options hash to valid keys before + # + # This is useful for limiting an options hash to valid keys before # passing to a method: # # def search(criteria = {}) @@ -19,9 +21,8 @@ class Hash # valid_keys = [:mass, :velocity, :time] # search(options.slice(*valid_keys)) def slice(*keys) - keys.map! { |key| convert_key(key) } if respond_to?(:convert_key, true) - keys.each_with_object(self.class.new) { |k, hash| hash[k] = self[k] if has_key?(k) } - end + keys.each_with_object(Hash.new) { |k, hash| hash[k] = self[k] if has_key?(k) } + end unless method_defined?(:slice) # Replaces the hash with only the given keys. # Returns a hash containing the removed key/value pairs. @@ -29,7 +30,6 @@ class Hash # { a: 1, b: 2, c: 3, d: 4 }.slice!(:a, :b) # # => {:c=>3, :d=>4} def slice!(*keys) - keys.map! { |key| convert_key(key) } if respond_to?(:convert_key, true) omit = slice(*self.keys - keys) hash = slice(*keys) hash.default = default |