Object::HashWithIndifferentAccess

new(constructor = {})

# File activesupport/lib/active_support/hash_with_indifferent_access.rb, line 23
def initialize(constructor = {})
  if constructor.is_a?(Hash)
    super()
    update(constructor)
  else
    super(constructor)
  end
end

new_from_hash_copying_default(hash)

Source: show | on GitHub

# File activesupport/lib/active_support/hash_with_indifferent_access.rb, line 40
def self.new_from_hash_copying_default(hash)
  new(hash).tap do |new_hash|
    new_hash.default = hash.default
  end
end

[]=(key, value)

Assigns a new value to the hash:

hash = HashWithIndifferentAccess.new
hash[:key] = "value"

Also aliased as: regular_writer, store

Source: show | on GitHub

# File activesupport/lib/active_support/hash_with_indifferent_access.rb, line 54
def []=(key, value)
  regular_writer(convert_key(key), convert_value(value))
end

default(key = nil)

Source: show | on GitHub

# File activesupport/lib/active_support/hash_with_indifferent_access.rb, line 32
def default(key = nil)
  if key.is_a?(Symbol) && include?(key = key.to_s)
    self[key]
  else
    super
  end
end

delete(key)

Removes a specified key from the hash.

Source: show | on GitHub

# File activesupport/lib/active_support/hash_with_indifferent_access.rb, line 136
def delete(key)
  super(convert_key(key))
end

dup()

Returns an exact copy of the hash.

Source: show | on GitHub

# File activesupport/lib/active_support/hash_with_indifferent_access.rb, line 113
def dup
  self.class.new(self).tap do |new_hash|
    new_hash.default = default
  end
end

extractable_options?()

Always returns true, so that Array#extract_options! finds members of this class.

Source: show | on GitHub

# File activesupport/lib/active_support/hash_with_indifferent_access.rb, line 11
def extractable_options?
  true
end

fetch(key, *extras)

Fetches the value for the specified key, same as doing hash

Source: show | on GitHub

# File activesupport/lib/active_support/hash_with_indifferent_access.rb, line 97
def fetch(key, *extras)
  super(convert_key(key), *extras)
end

has_key?(key)

include?(key)

key?(key)

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

Also aliased as: include?, has_key?, member?

Source: show | on GitHub

# File activesupport/lib/active_support/hash_with_indifferent_access.rb, line 88
def key?(key)
  super(convert_key(key))
end

member?(key)

merge(hash)

Merges the instantized and the specified hashes together, giving precedence to the values from the second hash. Does not overwrite the existing hash.

Source: show | on GitHub

# File activesupport/lib/active_support/hash_with_indifferent_access.rb, line 121
def merge(hash)
  self.dup.update(hash)
end

merge!(other_hash)

nested_under_indifferent_access()

Source: show | on GitHub

# File activesupport/lib/active_support/hash_with_indifferent_access.rb, line 19
def nested_under_indifferent_access
  self
end

regular_update(other_hash)

regular_writer(key, value)

reverse_merge(other_hash)

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.

Source: show | on GitHub

# File activesupport/lib/active_support/hash_with_indifferent_access.rb, line 127
def reverse_merge(other_hash)
  super self.class.new_from_hash_copying_default(other_hash)
end

reverse_merge!(other_hash)

Source: show | on GitHub

# File activesupport/lib/active_support/hash_with_indifferent_access.rb, line 131
def reverse_merge!(other_hash)
  replace(reverse_merge( other_hash ))
end

store(key, value)

stringify_keys()

Source: show | on GitHub

# File activesupport/lib/active_support/hash_with_indifferent_access.rb, line 141
def stringify_keys; dup end

stringify_keys!()

Source: show | on GitHub

# File activesupport/lib/active_support/hash_with_indifferent_access.rb, line 140
def stringify_keys!; self end

symbolize_keys()

Source: show | on GitHub

# File activesupport/lib/active_support/hash_with_indifferent_access.rb, line 143
def symbolize_keys; to_hash.symbolize_keys end

to_hash()

Convert to a Hash with String keys.

Source: show | on GitHub

# File activesupport/lib/active_support/hash_with_indifferent_access.rb, line 147
def to_hash
  Hash.new(default).merge!(self)
end

to_options!()

Source: show | on GitHub

# File activesupport/lib/active_support/hash_with_indifferent_access.rb, line 144
def to_options!; self end

update(other_hash)

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!"}

Also aliased as: regular_update, merge!

Source: show | on GitHub

# File activesupport/lib/active_support/hash_with_indifferent_access.rb, line 70
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

values_at(*indices)

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"]

Source: show | on GitHub

# File activesupport/lib/active_support/hash_with_indifferent_access.rb, line 108
def values_at(*indices)
  indices.collect {|key| self[convert_key(key)]}
end

with_indifferent_access()

Source: show | on GitHub

# File activesupport/lib/active_support/hash_with_indifferent_access.rb, line 15
def with_indifferent_access
  dup
end

convert_key(key)

Source: show | on GitHub

# File activesupport/lib/active_support/hash_with_indifferent_access.rb, line 152
def convert_key(key)
  key.kind_of?(Symbol) ? key.to_s : key
end

convert_value(value)

Source: show | on GitHub

# File activesupport/lib/active_support/hash_with_indifferent_access.rb, line 156
def convert_value(value)
  if value.is_a? Hash
    value.nested_under_indifferent_access
  elsif value.is_a?(Array)
    value.dup.replace(value.map { |e| convert_value(e) })
  else
    value
  end
end

Class Object::HashWithIndifferentAccess < Hash