Class: Mail::IndifferentHash

### Home Classes Methods

### In Files

- lib/mail/indifferent_hash.rb

### Parent

Hash

### Methods

- ::new
- ::new_from_hash_copying_default
- #[]=
- #convert_key
- #convert_value
- #default
- #delete
- #dup
- #fetch
- #has_key?
- #include?
- #key?
- #member?
- #merge
- #merge!
- #regular_update
- #regular_writer
- #reverse_merge
- #reverse_merge!
- #store
- #stringify_keys
- #stringify_keys!
- #symbolize_keys
- #to_hash
- #to_options!
- #update
- #values_at

### Files

- TODO.rdoc

### Class/Module Index

Quicksearch

- Mail
- Mail::Address
- Mail::AddressContainer
- Mail::AttachmentsList
- Mail::BccField
- Mail::Body
- Mail::CcField
- Mail::CheckDeliveryParams
- Mail::CommentsField
- Mail::Constants
- Mail::ContentDescriptionField
- Mail::ContentDispositionField
- Mail::ContentIdField
- Mail::ContentLocationField
- Mail::ContentTransferEncodingElement
- Mail::ContentTransferEncodingField
- Mail::ContentTypeField
- Mail::DateField
- Mail::Encodings
- Mail::Encodings::Base64
- Mail::Encodings::Binary
- Mail::Encodings::EightBit
- Mail::Encodings::QuotedPrintable
- Mail::Encodings::SevenBit
- Mail::Encodings::TransferEncoding
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- Mail::Envelope
- Mail::EnvelopeFromElement
- Mail::Exim
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- Mail::IndifferentHash
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- Mail::Matchers::HasSentEmailMatcher
- Mail::MessageIdField
- Mail::MessageIdsElement
- Mail::MimeVersionElement
- Mail::MimeVersionField
- Mail::Multibyte
- Mail::Multibyte::EncodingError
- Mail::OptionalField
- Mail::POP3
- Mail::ParameterHash
- Mail::Parsers
- Mail::Parsers::AddressListsParser
- Mail::Parsers::ContentDispositionParser
- Mail::Parsers::ContentLocationParser
- Mail::Parsers::ContentTransferEncodingParser
- Mail::Parsers::ContentTypeParser
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- Mail::Parsers::MimeVersionParser
- Mail::Parsers::PhraseListsParser
- Mail::Parsers::Ragel
- Mail::Parsers::Ragel::AddressListsMachine
- Mail::Parsers::Ragel::ContentDispositionMachine
- Mail::Parsers::Ragel::ContentLocationMachine
- Mail::Parsers::Ragel::ContentTransferEncodingMachine
- Mail::Parsers::Ragel::ContentTypeMachine
- Mail::Parsers::Ragel::DateTimeMachine
- Mail::Parsers::Ragel::EnvelopeFromMachine
- Mail::Parsers::Ragel::MessageIdsMachine
- Mail::Parsers::Ragel::MimeVersionMachine
- Mail::Parsers::Ragel::PhraseListsMachine
- Mail::Parsers::Ragel::ReceivedMachine
- Mail::Parsers::Ragel::Ruby
- Mail::Parsers::ReceivedParser
- Mail::Part
- Mail::PartsList
- Mail::PhraseList
- Mail::ReceivedElement
- Mail::ReceivedField
- Mail::ReferencesField
- Mail::ReplyToField
- Mail::ResentBccField
- Mail::ResentCcField
- Mail::ResentDateField
- Mail::ResentFromField
- Mail::ResentMessageIdField
- Mail::ResentSenderField
- Mail::ResentToField
- Mail::Retriever
- Mail::ReturnPathField
- Mail::Ruby18
- Mail::Ruby19
- Mail::Ruby19::BestEffortCharsetEncoder
- Mail::Ruby19::StrictCharsetEncoder
- Mail::SMTP
- Mail::SMTPConnection
- Mail::SenderField
- Mail::Sendmail
- Mail::StructuredField
- Mail::SubjectField
- Mail::TestMailer
- Mail::TestRetriever
- Mail::ToField
- Mail::UnstructuredField
- Mail::Utilities
- Mail::VERSION
- Net
- Net::SMTP
- Object
- String

No matching classes.

# Mail::IndifferentHash

### Public Class Methods

new(constructor = {}) click to toggle source

    # File lib/mail/indifferent_hash.rb, line 8
    def initialize(constructor = {})
      if constructor.is_a?(Hash)
        super()
        update(constructor)
      else
        super(constructor)
      end
    end

new_from_hash_copying_default(hash) click to toggle source

    # File lib/mail/indifferent_hash.rb, line 25
    def self.new_from_hash_copying_default(hash)
      IndifferentHash.new(hash).tap do |new_hash|
        new_hash.default = hash.default
      end
    end

### Public Instance Methods

[]=(key, value) click to toggle source

Assigns a new value to the hash:

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

    # File lib/mail/indifferent_hash.rb, line 39
    def []=(key, value)
      regular_writer(convert_key(key), convert_value(value))
    end

Also aliased as: regular_writer, store
default(key = nil) click to toggle source

    # File lib/mail/indifferent_hash.rb, line 17
    def default(key = nil)
      if key.is_a?(Symbol) && include?(key = key.to_s)
        self[key]
      else
        super
      end
    end

delete(key) click to toggle source

Removes a specified key from the hash.

    # File lib/mail/indifferent_hash.rb, line 115
    def delete(key)
      super(convert_key(key))
    end

dup() click to toggle source

Returns an exact copy of the hash.

    # File lib/mail/indifferent_hash.rb, line 94
    def dup
      IndifferentHash.new(self)
    end

fetch(key, *extras) click to toggle source

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

    # File lib/mail/indifferent_hash.rb, line 78
    def fetch(key, *extras)
      super(convert_key(key), *extras)
    end

has_key?(key) click to toggle source
Alias for: key?
include?(key) click to toggle source
Alias for: key?
key?(key) click to toggle source

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/mail/indifferent_hash.rb, line 69
    def key?(key)
      super(convert_key(key))
    end

Also aliased as: include?, has_key?, member?
member?(key) click to toggle source
Alias for: key?
merge(hash) click to toggle source

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/mail/indifferent_hash.rb, line 100
    def merge(hash)
      self.dup.update(hash)
    end

merge!(other_hash) click to toggle source
Alias for: update
regular_update(other_hash) click to toggle source
Alias for: update
regular_writer(key, value) click to toggle source
Alias for: []=
reverse_merge(other_hash) click to toggle source

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/mail/indifferent_hash.rb, line 106
    def reverse_merge(other_hash)
      super self.class.new_from_hash_copying_default(other_hash)
    end

reverse_merge!(other_hash) click to toggle source

    # File lib/mail/indifferent_hash.rb, line 110
    def reverse_merge!(other_hash)
      replace(reverse_merge( other_hash ))
    end

store(key, value) click to toggle source
Alias for: []=
stringify_keys() click to toggle source

    # File lib/mail/indifferent_hash.rb, line 120
    def stringify_keys; dup end

stringify_keys!() click to toggle source

    # File lib/mail/indifferent_hash.rb, line 119
    def stringify_keys!; self end

symbolize_keys() click to toggle source

    # File lib/mail/indifferent_hash.rb, line 121
    def symbolize_keys; to_hash.symbolize_keys end

to_hash() click to toggle source

    # File lib/mail/indifferent_hash.rb, line 124
    def to_hash
      Hash.new(default).merge!(self)
    end

to_options!() click to toggle source

    # File lib/mail/indifferent_hash.rb, line 122
    def to_options!; self end

update(other_hash) click to toggle source

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/mail/indifferent_hash.rb, line 55
    def update(other_hash)
      other_hash.each_pair { |key, value| regular_writer(convert_key(key), convert_value(value)) }
      self
    end

Also aliased as: regular_update, merge!
values_at(*indices) click to toggle source

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/mail/indifferent_hash.rb, line 89
    def values_at(*indices)
      indices.collect {|key| self[convert_key(key)]}
    end

### Protected Instance Methods

convert_key(key) click to toggle source

    # File lib/mail/indifferent_hash.rb, line 130
    def convert_key(key)
      key.kind_of?(Symbol) ? key.to_s : key
    end

convert_value(value) click to toggle source

    # File lib/mail/indifferent_hash.rb, line 134
    def convert_value(value)
      if value.class == Hash
        self.class.new_from_hash_copying_default(value)
      elsif value.is_a?(Array)
        value.dup.replace(value.map { |e| convert_value(e) })
      else
        value
      end
    end

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