Assigns a new value to the hash:
hash = HashWithIndifferentAccess.new hash[:key] = "value"
# File lib/active_support/hash_with_indifferent_access.rb, line 50 def []=(key, value) regular_writer(convert_key(key), convert_value(value)) end
# File lib/active_support/hash_with_indifferent_access.rb, line 28 def default(key = nil) if key.is_a?(Symbol) && include?(key = key.to_s) self[key] else super end end
Removes a specified key from the hash.
# File lib/active_support/hash_with_indifferent_access.rb, line 132 def delete(key) super(convert_key(key)) end
Returns an exact copy of the hash.
# File lib/active_support/hash_with_indifferent_access.rb, line 109 def dup self.class.new(self).tap do |new_hash| new_hash.default = default end end
Always returns true, so that Array#extract_options! finds members of this class.
# File lib/active_support/hash_with_indifferent_access.rb, line 11 def extractable_options? true end
Fetches the value for the specified key, same as doing hash[key]
# File lib/active_support/hash_with_indifferent_access.rb, line 93 def fetch(key, *extras) super(convert_key(key), *extras) end
Checks the hash for a key matching the argument passed in:
hash = HashWithIndifferentAccess.new hash["key"] = "value" hash.key? :key # => true hash.key? "key" # => true
# File lib/active_support/hash_with_indifferent_access.rb, line 84 def key?(key) super(convert_key(key)) end
Merges the instantized and the specified hashes together, giving precedence to the values from the second hash Does not overwrite the existing hash.
# File lib/active_support/hash_with_indifferent_access.rb, line 117 def merge(hash) self.dup.update(hash) end
Performs the opposite of merge, with the keys and values from the first hash taking precedence over the second. This overloaded definition prevents returning a regular hash, if reverse_merge is called on a HashWithDifferentAccess.
# File lib/active_support/hash_with_indifferent_access.rb, line 123 def reverse_merge(other_hash) super self.class.new_from_hash_copying_default(other_hash) end
# File lib/active_support/hash_with_indifferent_access.rb, line 127 def reverse_merge!(other_hash) replace(reverse_merge( other_hash )) end
# File lib/active_support/hash_with_indifferent_access.rb, line 137 def stringify_keys; dup end
# File lib/active_support/hash_with_indifferent_access.rb, line 136 def stringify_keys!; self end
# File lib/active_support/hash_with_indifferent_access.rb, line 139 def symbolize_keys; to_hash.symbolize_keys end
# File lib/active_support/hash_with_indifferent_access.rb, line 140 def to_options!; self end
Updates the instantized hash with values from the second:
hash_1 = HashWithIndifferentAccess.new hash_1[:key] = "value" hash_2 = HashWithIndifferentAccess.new hash_2[:key] = "New Value!" hash_1.update(hash_2) # => {"key"=>"New Value!"}
# File lib/active_support/hash_with_indifferent_access.rb, line 66 def update(other_hash) if other_hash.is_a? HashWithIndifferentAccess super(other_hash) else other_hash.each_pair { |key, value| regular_writer(convert_key(key), convert_value(value)) } self end end
Returns an array of the values at the specified indices:
hash = HashWithIndifferentAccess.new hash[:a] = "x" hash[:b] = "y" hash.values_at("a", "b") # => ["x", "y"]
# File lib/active_support/hash_with_indifferent_access.rb, line 104 def values_at(*indices) indices.collect {|key| self[convert_key(key)]} end
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