class Hash

Experimental RBS support (using type sampling data from the type_fusion project). 

# sig/active_support/core_ext/array/extract_options.rbs

class Hash
  
  type Hash__deep_transform_keys_in_object_object = String | Hash | Array[String] | Array[] | Array[Array, String, String] | Array[Array, String, String, String] | Array[Array, String, String, Array, String, Array, ] | Array[Array, String, Array, Array, String, String, Array, String, String, Array, String, String, Array, String, String, Array, String, String, Array, String, String, Array, String, String, Array, String, String, Array, String, String] | Array[Array, String, String, Array, String, Array, Array, String, String, Array, String, String, Array, String, String, Array, String, String, Array, String, String, Array, String, String, Array, String, String, Array, String, String, Array, String, String] | nil | Array[Array, String, Array, String, Array, Array, String, Array, String, Array, Array, String, String, Array, String, String, Array, String, String, Array, String, String, Array, String, String, Array, String, String, Array, String, String, Array, String, Array, String, Array, Array, String, Array, String, String, String, Array, String, Array, String, String, Array, String, Array, String, Array, String, Array, String, String, Array, String, String] | Array[Array, String, Array, ] | Array[Array, String, Array, Array, String, Array, Array, String, Array, String, String, String, String, String, Array, String, Array, ]
  type Hash__deep_transform_keys_in_object_return_value = String | nil | Array[String] | Array[] | Array[Array, String, Array, Array, String, Array, Array, String, Array, String, String, String, String, String, Array, String, Array, ] | Array[Array, String, String, String] | Hash
  
  def _deep_transform_keys_in_object: (Hash__deep_transform_keys_in_object_object object, ) -> Hash__deep_transform_keys_in_object_return_value
  def as_json: (?Hash? options) -> Hash
  def deep_dup: () -> Hash
  def deep_merge: (Hash other_hash, ) -> untyped
  def deep_symbolize_keys: () -> Hash
  def deep_transform_keys: () -> Hash
  def except!: (*Array[] keys) -> untyped
  def extract!: (*Array[String] keys) -> Hash
  def extractable_options?: () -> true
  def stringify_keys: () -> Hash
  def symbolize_keys: () -> Hash
  def to_query: (?nil namespace) -> String
  def with_indifferent_access: () -> Hash
end

def _deep_transform_keys_in_object(object, &block)

Experimental RBS support (using type sampling data from the type_fusion project). 

type Hash__deep_transform_keys_in_object_object = String | Hash | Array[String] | Array[] | Array[Array, String, String] | Array[Array, String, String, String] | Array[Array, String, String, Array, String, Array, ] | Array[Array, String, Array, Array, String, String, Array, String, String, Array, String, String, Array, String, String, Array, String, String, Array, String, String, Array, String, String, Array, String, String, Array, String, String] | Array[Array, String, String, Array, String, Array, Array, String, String, Array, String, String, Array, String, String, Array, String, String, Array, String, String, Array, String, String, Array, String, String, Array, String, String, Array, String, String] | nil | Array[Array, String, Array, String, Array, Array, String, Array, String, Array, Array, String, String, Array, String, String, Array, String, String, Array, String, String, Array, String, String, Array, String, String, Array, String, String, Array, String, Array, String, Array, Array, String, Array, String, String, String, Array, String, Array, String, String, Array, String, Array, String, Array, String, Array, String, String, Array, String, String] | Array[Array, String, Array, ] | Array[Array, String, Array, Array, String, Array, Array, String, Array, String, String, String, String, String, Array, String, Array, ]
type Hash__deep_transform_keys_in_object_return_value = String | nil | Array[String] | Array[] | Array[Array, String, Array, Array, String, Array, Array, String, Array, String, String, String, String, String, Array, String, Array, ] | Array[Array, String, String, String] | Hash
type Hash__deep_transform_keys_in_object_object = String | gem_name | String | gem_version | String | receiver | String | method_name | String | application_name | String | location | String | type_fusion_version | String | parameters |  | return_value | Array | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | gem_name | String | gem_version | String | receiver | String | method_name | String | application_name | String | location | String | type_fusion_version | String | parameters |  | return_value | String | Array | Array | String | Array | String | Array | String | Array | String | gem_name | String | gem_version | String | receiver | String | method_name | String | application_name | String | location | String | type_fusion_version | String | parameters | Array | String | String | String | return_value | String |  | Array | String | String | Array | String | String | Array | String | Array | String | Array | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | Array | String | Array |  | Array | String | String | String | sample | gem_name | String | gem_version | String | receiver | String | method_name | String | application_name | String | location | String | type_fusion_version | String | parameters |  | return_value | String | String | String | Array | Array | String | Array | String | Array | String | Array | String | Array | String | Array | String | Array |  | Array | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | Array | String | Array |  | Array | String | String | Array | String | String | String | sample | gem_name | String | gem_version | String | receiver | String | method_name | String | application_name | String | location | String | type_fusion_version | String | parameters | Array | String | String | String | return_value | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | Array | String | Array | Array | String | Array | String | String | String | Array | String | String | Array | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | sample | gem_name | String | gem_version | String | receiver | String | method_name | String | application_name | String | location | String | type_fusion_version | String | parameters |  | return_value | Array |  | sample | gem_name | String | gem_version | String | receiver | String | method_name | String | application_name | String | location | String | type_fusion_version | String | parameters |  | return_value | Array | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | gem_name | String | gem_version | String | receiver | NilClass | method_name | String | application_name | String | location | String | type_fusion_version | String | parameters |  | return_value | String | sample | gem_name | String | gem_version | String | receiver | String | method_name | String | application_name | String | location | String | type_fusion_version | String | parameters | Array | String | String | Array | String | Array |  | return_value | String | String | Array | String | Array |  | Array | String | Array | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | Array | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | Array | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | String | Array | String | 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type Hash__deep_transform_keys_in_object_return_value = String | nil | String | String |  | Array |  | Array | Array | String | Array | Array | String | Array | String | Array | String | Array | Array | String | Array |  | Array | String | Array | Array | String | Array | Array | String | Array | Array | String | Array |  | String | String | String | Array | String | Array | Array | String | Array | Array | String | Array |  | Array | String | Array | Array | String | Array | Array | String | Array | Array | String | Array |  | Array | String | Array | Array | String | Array |  | String | String | String | Array | Array | String | Array | Array | String | Array | Array | String | Array |  | String | String | Array | String | Array | Array | String | Array |  | String | Array | String | String | String | String | String | String | String | sample | gem_name | String | gem_version | String | receiver | String | method_name | String | application_name | String | location | String | type_fusion_version | String | parameters |  | return_value | Array | Array | String | Array |  | Array | String | Array | Array | String | Array |  | String | Array | Array | String | Array |  | Array | String | Array | Array | String | Array |  | Array | String | Array |  | String

def _deep_transform_keys_in_object: (Hash__deep_transform_keys_in_object_object object, ) -> Hash__deep_transform_keys_in_object_return_value

This signature was generated using 1038 samples from 2 applications.

Support methods for deep transforming nested hashes and arrays. 
def _deep_transform_keys_in_object(object, &block)
  case object
  when Hash
    object.each_with_object(self.class.new) do |(key, value), result|
      result[yield(key)] = _deep_transform_keys_in_object(value, &block)
    end
  when Array
    object.map { |e| _deep_transform_keys_in_object(e, &block) }
  else
    object
  end
end

def _deep_transform_keys_in_object!(object, &block) 

def _deep_transform_keys_in_object!(object, &block)
  case object
  when Hash
    object.keys.each do |key|
      value = object.delete(key)
      object[yield(key)] = _deep_transform_keys_in_object!(value, &block)
    end
    object
  when Array
    object.map! { |e| _deep_transform_keys_in_object!(e, &block) }
  else
    object
  end
end

def _deep_transform_values_in_object(object, &block)

Support methods for deep transforming nested hashes and arrays. 
def _deep_transform_values_in_object(object, &block)
  case object
  when Hash
    object.transform_values { |value| _deep_transform_values_in_object(value, &block) }
  when Array
    object.map { |e| _deep_transform_values_in_object(e, &block) }
  else
    yield(object)
  end
end

def _deep_transform_values_in_object!(object, &block) 

def _deep_transform_values_in_object!(object, &block)
  case object
  when Hash
    object.transform_values! { |value| _deep_transform_values_in_object!(value, &block) }
  when Array
    object.map! { |e| _deep_transform_values_in_object!(e, &block) }
  else
    yield(object)
  end
end

def as_json(options = nil) # :nodoc:

Experimental RBS support (using type sampling data from the type_fusion project). 

type Hash_as_json_return_value = gem_name | String | gem_version | String | receiver | String | method_name | String | application_name | String | location | String | type_fusion_version | String | parameters |  | return_value | Array | Array | String | Array | String | String | Array | String | Array | String | String | gem_name | String | gem_version | String | receiver | String | method_name | String | application_name | String | location | String | type_fusion_version | String | parameters |  | return_value | String | calls | Integer | total_runtime | Integer | children_runtime | Integer | kind | String | started_at | Integer | file | String | line | Integer | appendable_command | FalseClass | command | String | sample | gem_name | String | gem_version | String | receiver | String | method_name | String | application_name | String | location | String | type_fusion_version | String | parameters |  | return_value | Array | Array | String | Array |  | Array | String | Array | Array | String | Array | Array | String | Array | Array | String | Array | Array | String | Array |  | String | String | Array | String | Array | Array | String | Array |  | String | Array | String | Array |  | gem_name | String | gem_version | String | receiver | String | method_name | String | application_name | String | location | String | type_fusion_version | String | parameters | Array | String | String | Array | String | Array |  | return_value | Array |  | gem_name | String | gem_version | String | receiver | String | method_name | String | application_name | String | location | String | type_fusion_version | String | parameters |  | return_value | Array | String | Array | String | Array | Array | String | Array |  | String | gem_name | String | gem_version | String | receiver | String | method_name | String | application_name | String | location | String | type_fusion_version | String | parameters |  | return_value | Array |  | gem_name | String | gem_version | String | receiver | String | method_name | String | application_name | String | location | String | type_fusion_version | String | parameters | Array | String | String | String | Array | String | String | String | return_value | String

def as_json: (?[]? options) -> Hash_as_json_return_value

This signature was generated using 223 samples from 2 applications.

:nodoc: 
def as_json(options = nil) # :nodoc:
  # create a subset of the hash by applying :only or :except
  subset = if options
    if attrs = options[:only]
      slice(*Array(attrs))
    elsif attrs = options[:except]
      except(*Array(attrs))
    else
      self
    end
  else
    self
  end
  result = {}
  subset.each do |k, v|
    result[k.to_s] = options ? v.as_json(options.dup) : v.as_json
  end
  result
end

def assert_valid_keys(*valid_keys)

{ name: 'Rob', age: '28' }.assert_valid_keys(:name, :age) # => passes, raises nothing
{ name: 'Rob', age: '28' }.assert_valid_keys('name', 'age') # => raises "ArgumentError: Unknown key: :name. Valid keys are: 'name', 'age'"
{ name: 'Rob', years: '28' }.assert_valid_keys(:name, :age) # => raises "ArgumentError: Unknown key: :years. Valid keys are: :name, :age"

meaning that string and symbol keys will not match.
Note that keys are treated differently than HashWithIndifferentAccess,

+ArgumentError+ on a mismatch.
Validates all keys in a hash match *valid_keys, raising 
def assert_valid_keys(*valid_keys)
  valid_keys.flatten!
  each_key do |k|
    unless valid_keys.include?(k)
      raise ArgumentError.new("Unknown key: #{k.inspect}. Valid keys are: #{valid_keys.map(&:inspect).join(', ')}")
    end
  end
end

def compact_blank # :nodoc:

:nodoc:
Hash#reject has its own definition, so this needs one too. 
def compact_blank # :nodoc:
  reject { |_k, v| v.blank? }
end

def compact_blank!

# => { b: 1, f: true }
h.compact_blank!
h = { a: "", b: 1, c: nil, d: [], e: false, f: true }

Uses Object#blank? for determining if a value is blank.
Removes all blank values from the +Hash+ in place and returns self. 
def compact_blank!
  # use delete_if rather than reject! because it always returns self even if nothing changed
  delete_if { |_k, v| v.blank? }
end

def deep_dup

Experimental RBS support (using type sampling data from the type_fusion project). 

type Hash_deep_dup_return_value = body | sample | gem_name | String | gem_version | String | receiver | String | method_name | String | application_name | String | location | String | type_fusion_version | String | parameters |  | return_value | String | url | String | method | Symbol | format | LHC::Formats::JSON | gem_name | String | gem_version | String | receiver | String | method_name | String | application_name | String | location | String | type_fusion_version | String | parameters |  | return_value | String | sample | gem_name | String | gem_version | String | receiver | NilClass | method_name | String | application_name | String | location | String | type_fusion_version | String | parameters |  | return_value | String | body | sample | gem_name | String | gem_version | String | receiver | String | method_name | String | application_name | String | location | String | type_fusion_version | String | parameters |  | return_value | Array | String | String | String | url | String | method | Symbol | format | LHC::Formats::JSON | body | sample | gem_name | String | gem_version | String | receiver | String | method_name | String | application_name | String | location | String | type_fusion_version | String | parameters | Array | String | String | String | Array | String | String | String | return_value | String | url | String | method | Symbol | headers | Content-Type | String | Accept | String | Accept-Charset | String | Content-Type | String | Accept | String | Accept-Charset | String | sample | gem_name | String | gem_version | String | receiver | String | method_name | String | application_name | String | location | String | type_fusion_version | String | parameters |  | return_value | Array |  | body | sample | gem_name | String | gem_version | String | receiver | String | method_name | String | application_name | String | location | String | type_fusion_version | String | parameters |  | return_value | String | url | String | method | Symbol | headers | Content-Type | String | Accept | String | Accept-Charset | String | 

def deep_dup: () -> Hash_deep_dup_return_value

This signature was generated using 262 samples from 2 applications.

dup[:a][:c] # => "c"
hash[:a][:c] # => nil

dup[:a][:c] = 'c'
dup = hash.deep_dup
hash = { a: { b: 'b' } }

Returns a deep copy of hash. 
def deep_dup
  hash = dup
  each_pair do |key, value|
    if ::String === key || ::Symbol === key
      hash[key] = value.deep_dup
    else
      hash.delete(key)
      hash[key.deep_dup] = value.deep_dup
    end
  end
  hash
end

def deep_merge(other_hash, &block)

Experimental RBS support (using type sampling data from the type_fusion project). 

def deep_merge: (count | Integer other_hash, ) -> untyped

This signature was generated using 1 sample from 1 application.

# => { a: 100, b: 450, c: { c1: 300 } }
h1.deep_merge(h2) { |key, this_val, other_val| this_val + other_val }
h2 = { b: 250, c: { c1: 200 } }
h1 = { a: 100, b: 200, c: { c1: 100 } }

to merge values:
Like with Hash#merge in the standard library, a block can be provided

h1.deep_merge(h2) # => { a: false, b: { c: [1, 2, 3], x: [3, 4, 5] } }

h2 = { a: false, b: { x: [3, 4, 5] } }
h1 = { a: true, b: { c: [1, 2, 3] } }

Returns a new hash with +self+ and +other_hash+ merged recursively. 
def deep_merge(other_hash, &block)
  dup.deep_merge!(other_hash, &block)
end

def deep_merge!(other_hash, &block)

Same as +deep_merge+, but modifies +self+. 
def deep_merge!(other_hash, &block)
  merge!(other_hash) do |key, this_val, other_val|
    if this_val.is_a?(Hash) && other_val.is_a?(Hash)
      this_val.deep_merge(other_val, &block)
    elsif block_given?
      block.call(key, this_val, other_val)
    else
      other_val
    end
  end
end

def deep_stringify_keys

# => {"person"=>{"name"=>"Rob", "age"=>"28"}}
hash.deep_stringify_keys

hash = { person: { name: 'Rob', age: '28' } }

nested hashes and arrays.
This includes the keys from the root hash and from all
Returns a new hash with all keys converted to strings. 
def deep_stringify_keys
  deep_transform_keys(&:to_s)
end

def deep_stringify_keys!

nested hashes and arrays.
This includes the keys from the root hash and from all
Destructively converts all keys to strings. 
def deep_stringify_keys!
  deep_transform_keys!(&:to_s)
end

def deep_symbolize_keys

Experimental RBS support (using type sampling data from the type_fusion project). 

def deep_symbolize_keys: () -> sample | gem_name | String | gem_version | String | receiver | String | method_name | String | application_name | String | location | String | type_fusion_version | String | parameters |  | return_value | String

This signature was generated using 34 samples from 1 application.

# => {:person=>{:name=>"Rob", :age=>"28"}}
hash.deep_symbolize_keys

hash = { 'person' => { 'name' => 'Rob', 'age' => '28' } }

and from all nested hashes and arrays.
they respond to +to_sym+. This includes the keys from the root hash
Returns a new hash with all keys converted to symbols, as long as 
def deep_symbolize_keys
  deep_transform_keys { |key| key.to_sym rescue key }
end

def deep_symbolize_keys!

nested hashes and arrays.
to +to_sym+. This includes the keys from the root hash and from all
Destructively converts all keys to symbols, as long as they respond 
def deep_symbolize_keys!
  deep_transform_keys! { |key| key.to_sym rescue key }
end

def deep_transform_keys(&block)

Experimental RBS support (using type sampling data from the type_fusion project). 

def deep_transform_keys: () -> sample | gem_name | String | gem_version | String | receiver | String | method_name | String | application_name | String | location | String | type_fusion_version | String | parameters |  | return_value | Array | Array | String | Array | String | Array | String | Array | Array | String | Array | Array | String | Array | Array | String | Array |  | Array | String | Array |  | String | String | String | String

This signature was generated using 38 samples from 1 application.

# => {"PERSON"=>{"NAME"=>"Rob", "AGE"=>"28"}}
hash.deep_transform_keys{ |key| key.to_s.upcase }

hash = { person: { name: 'Rob', age: '28' } }

nested hashes and arrays.
This includes the keys from the root hash and from all
Returns a new hash with all keys converted by the block operation. 
def deep_transform_keys(&block)
  _deep_transform_keys_in_object(self, &block)
end

def deep_transform_keys!(&block)

nested hashes and arrays.
This includes the keys from the root hash and from all
Destructively converts all keys by using the block operation. 
def deep_transform_keys!(&block)
  _deep_transform_keys_in_object!(self, &block)
end

def deep_transform_values(&block)

# => {person: {name: "ROB", age: "28"}}
hash.deep_transform_values{ |value| value.to_s.upcase }

hash = { person: { name: 'Rob', age: '28' } }

nested hashes and arrays.
This includes the values from the root hash and from all
Returns a new hash with all values converted by the block operation. 
def deep_transform_values(&block)
  _deep_transform_values_in_object(self, &block)
end

def deep_transform_values!(&block)

nested hashes and arrays.
This includes the values from the root hash and from all
Destructively converts all values by using the block operation. 
def deep_transform_values!(&block)
  _deep_transform_values_in_object!(self, &block)
end

def except(*keys)

@person.update(params[:person].except(:admin))
This is useful for limiting a set of parameters to everything but a few known toggles:

hash # => { a: true, b: false, c: nil }
hash.except(:a, :b) # => { c: nil }
hash.except(:c) # => { a: true, b: false }
hash = { a: true, b: false, c: nil }
Returns a hash that includes everything except given keys. 
def except(*keys)
  slice(*self.keys - keys)
end unless method_defined?(:except)

def except!(*keys)

Experimental RBS support (using type sampling data from the type_fusion project). 

def except!: (* keys) -> untyped

This signature was generated using 39 samples from 1 application.

hash # => { a: true, b: false }
hash.except!(:c) # => { a: true, b: false }
hash = { a: true, b: false, c: nil }
Removes the given keys from hash and returns it. 
def except!(*keys)
  keys.each { |key| delete(key) }
  self
end

def extract!(*keys)

Experimental RBS support (using type sampling data from the type_fusion project). 

def extract!: (*String | String | String keys) ->

This signature was generated using 4 samples from 1 application.

hash # => {:c=>3, :d=>4}
hash.extract!(:a, :b) # => {:a=>1, :b=>2}
hash = { a: 1, b: 2, c: 3, d: 4 }

Removes and returns the key/value pairs matching the given keys. 
def extract!(*keys)
  keys.each_with_object(self.class.new) { |key, result| result[key] = delete(key) if has_key?(key) }
end

def extractable_options?

Experimental RBS support (using type sampling data from the type_fusion project). 

def extractable_options?: () -> true

This signature was generated using 8 samples from 2 applications.

the Array when it is the last element of the Array.
is extractable, Array#extract_options! pops it from
true to declare themselves as extractable. If a Hash
Subclasses of Hash may implement this method and return
By default, only instances of Hash itself are extractable. 
def extractable_options?
  instance_of?(Hash)
end

def from_trusted_xml(xml)

Builds a Hash from XML just like Hash.from_xml, but also allows Symbol and YAML. 
def from_trusted_xml(xml)
  from_xml xml, []
end

def from_xml(xml, disallowed_types = nil)

which are Symbol and YAML.
Note that passing custom disallowed types will override the default types,

# => ActiveSupport::XMLConverter::DisallowedType: Disallowed type attribute: "integer"
hash = Hash.from_xml(xml, ['integer'])

XML

"David"
1


xml = <<-XML

array.
Custom +disallowed_types+ can also be passed in the form of an

parse this XML.
type="symbol". Use Hash.from_trusted_xml to
+DisallowedType+ is raised if the XML contains attributes with type="yaml" or

# => {"hash"=>{"foo"=>1, "bar"=>2}}
hash = Hash.from_xml(xml)

XML

2
1


xml = <<-XML

its content
Returns a Hash containing a collection of pairs when the key is the node name and the value is 
def from_xml(xml, disallowed_types = nil)
  ActiveSupport::XMLConverter.new(xml, disallowed_types).to_h
end

def reverse_merge(other_hash)

with default values.
This is particularly useful for initializing an options hash

options = { size: 25, velocity: 10 }.merge(options)

is equivalent to

options = options.reverse_merge(size: 25, velocity: 10)

Merges the caller into +other_hash+. For example, 
def reverse_merge(other_hash)
  other_hash.merge(self)
end

def reverse_merge!(other_hash)

Destructive +reverse_merge+. 
def reverse_merge!(other_hash)
  replace(reverse_merge(other_hash))
end

def slice!(*keys)

hash # => {:a=>1, :b=>2}
hash.slice!(:a, :b) # => {:c=>3, :d=>4}
hash = { a: 1, b: 2, c: 3, d: 4 }

Returns a hash containing the removed key/value pairs.
Replaces the hash with only the given keys. 
def slice!(*keys)
  omit = slice(*self.keys - keys)
  hash = slice(*keys)
  hash.default      = default
  hash.default_proc = default_proc if default_proc
  replace(hash)
  omit
end

def stringify_keys

Experimental RBS support (using type sampling data from the type_fusion project). 

type Hash_stringify_keys_return_value = class | String | data-turbo-track | String | _gemsh_session | String | _skillit_session | String | token | String |  | class | String | aria-current | String | session_id | String | _csrf_token | String | flash | discard |  | flashes | notice | String

def stringify_keys: () -> Hash_stringify_keys_return_value

This signature was generated using 67 samples from 2 applications.

# => {"name"=>"Rob", "age"=>"28"}
hash.stringify_keys

hash = { name: 'Rob', age: '28' }

Returns a new hash with all keys converted to strings. 
def stringify_keys
  transform_keys(&:to_s)
end

def stringify_keys!

+stringify_keys+, but modifies +self+.
Destructively converts all keys to strings. Same as 
def stringify_keys!
  transform_keys!(&:to_s)
end

def symbolize_keys

Experimental RBS support (using type sampling data from the type_fusion project). 

def symbolize_keys: () ->

This signature was generated using 7 samples from 1 application.

# => {:name=>"Rob", :age=>"28"}
hash.symbolize_keys

hash = { 'name' => 'Rob', 'age' => '28' }

they respond to +to_sym+.
Returns a new hash with all keys converted to symbols, as long as 
def symbolize_keys
  transform_keys { |key| key.to_sym rescue key }
end

def symbolize_keys!

to +to_sym+. Same as +symbolize_keys+, but modifies +self+.
Destructively converts all keys to symbols, as long as they respond 
def symbolize_keys!
  transform_keys! { |key| key.to_sym rescue key }
end

def to_query(namespace = nil)

Experimental RBS support (using type sampling data from the type_fusion project). 

def to_query: (?nil namespace) -> String

This signature was generated using 53 samples from 1 application.

are sorted lexicographically in ascending order.
The string pairs "key=value" that conform the query string

# => "user%5Bname%5D=David&user%5Bnationality%5D=Danish"
{name: 'David', nationality: 'Danish'}.to_query('user')

An optional namespace can be passed to enclose key names:

# => "name=David&nationality=Danish"
{name: 'David', nationality: 'Danish'}.to_query

query string:
Returns a string representation of the receiver suitable for use as a URL 
def to_query(namespace = nil)
  query = filter_map do |key, value|
    unless (value.is_a?(Hash) || value.is_a?(Array)) && value.empty?
      value.to_query(namespace ? "#{namespace}[#{key}]" : key)
    end
  end
  query.sort! unless namespace.to_s.include?("[]")
  query.join("&")
end

def to_xml(options = {})

options like :dasherize and friends, they are forwarded to the builder.
configure your own builder with the :builder option. The method also accepts
The default XML builder is a fresh instance of Builder::XmlMarkup. You can

By default the root node is "hash", but that's configurable via the :root option.

}
"Time" => "dateTime"
"DateTime" => "dateTime",
"Date" => "date",
"FalseClass" => "boolean",
"TrueClass" => "boolean",
"Float" => "float",
"BigDecimal" => "decimal",
"Integer" => "integer",
"Symbol" => "symbol",
XML_TYPE_NAMES = {

added as well according to the following mapping:
Unless the option :skip_types exists and is true, an attribute "type" is
+value+ as text node. If +value+ is +nil+ an attribute "nil" set to "true" is added.
* Otherwise, a node with +key+ as tag is created with a string representation of

#
# fooing!
#
# =>
{ foo: Foo.new }.to_xml(skip_instruct: true)

end
end
options[:builder].bar 'fooing!'
def to_xml(options)
class Foo

* If +value+ responds to +to_xml+ the method is invoked with +key+ as :root.

# => "foo"
{foo: lambda { |options, key| options[:builder].b(key) }}.to_xml

callable can add nodes by using options[:builder].
with +key+ as :root, and +key+ singularized as second argument. The
on the arity, the callable is invoked with the +options+ hash as first argument
* If +value+ is a callable object it must expect one or two arguments. Depending

and +key+ singularized as :children.
* If +value+ is an array there's a recursive call with +key+ as :root,

* If +value+ is a hash there's a recursive call with +key+ as :root.

the _values_. Given a pair +key+, +value+:
To do so, the method loops over the pairs and builds nodes that depend on

#
# 2
# 1
#
#
# =>
{ foo: 1, bar: 2 }.to_xml

Returns a string containing an XML representation of its receiver: 
def to_xml(options = {})
  require "active_support/builder" unless defined?(Builder::XmlMarkup)
  options = options.dup
  options[:indent]  ||= 2
  options[:root]    ||= "hash"
  options[:builder] ||= Builder::XmlMarkup.new(indent: options[:indent])
  builder = options[:builder]
  builder.instruct! unless options.delete(:skip_instruct)
  root = ActiveSupport::XmlMini.rename_key(options[:root].to_s, options)
  builder.tag!(root) do
    each { |key, value| ActiveSupport::XmlMini.to_tag(key, value, options) }
    yield builder if block_given?
  end
end

def with_indifferent_access

Experimental RBS support (using type sampling data from the type_fusion project). 

def with_indifferent_access: () -> (title | String |  | q | String)

This signature was generated using 7 samples from 1 application.

{ a: 1 }.with_indifferent_access['a'] # => 1

Returns an ActiveSupport::HashWithIndifferentAccess out of its receiver: 
def with_indifferent_access
  ActiveSupport::HashWithIndifferentAccess.new(self)
end