diff options
Diffstat (limited to 'activesupport/lib/active_support/hash_with_indifferent_access.rb')
-rw-r--r-- | activesupport/lib/active_support/hash_with_indifferent_access.rb | 13 |
1 files changed, 13 insertions, 0 deletions
diff --git a/activesupport/lib/active_support/hash_with_indifferent_access.rb b/activesupport/lib/active_support/hash_with_indifferent_access.rb index 1e1d6d3aac..3b185dd86b 100644 --- a/activesupport/lib/active_support/hash_with_indifferent_access.rb +++ b/activesupport/lib/active_support/hash_with_indifferent_access.rb @@ -195,6 +195,19 @@ module ActiveSupport indices.collect { |key| self[convert_key(key)] } end + # Returns an array of the values at the specified indices, but also + # raises an exception when one of the keys can't be found. + # + # hash = ActiveSupport::HashWithIndifferentAccess.new + # hash[:a] = 'x' + # hash[:b] = 'y' + # hash.fetch_values('a', 'b') # => ["x", "y"] + # hash.fetch_values('a', 'c') { |key| 'z' } # => ["x", "z"] + # hash.fetch_values('a', 'c') # => KeyError: key not found: "c" + def fetch_values(*indices, &block) + indices.collect { |key| fetch(key, &block) } + end if Hash.method_defined?(:fetch_values) + # Returns a shallow copy of the hash. # # hash = ActiveSupport::HashWithIndifferentAccess.new({ a: { b: 'b' } }) |