Module: Agrippa::MutableHash::InstanceMethods

Defined in:
lib/agrippa/mutable_hash.rb

Instance Method Summary collapse

Instance Method Details

#__apply_default_state ⇒ Object 



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# File 'lib/agrippa/mutable_hash.rb', line 64

def __apply_default_state
    return(self) unless @state.nil?
    @state = default_state if respond_to?(:default_state)
    @state ||= {}
    self
end

#chain(updates) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/agrippa/mutable_hash.rb', line 48

def chain(updates)
    raise(ArgumentError, "#set requires a Hash") \
        unless updates.respond_to?(:each_pair)
    updates.each_pair { |key, value| store(key, value) }
    self
end

#fetch(key, default = nil) ⇒ Object 



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# File 'lib/agrippa/mutable_hash.rb', line 60

def fetch(key, default = nil)
    @state.fetch(key.to_sym, default)
end

#initialize(state = nil) ⇒ Object

Raises:

  • (ArgumentError) 


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# File 'lib/agrippa/mutable_hash.rb', line 41

def initialize(state = nil)
    raise(ArgumentError, "#{self.class}#new requires a hash.") \
        unless (state.nil? or state.respond_to?(:each_pair))
    __apply_default_state
    chain(state) if (state.respond_to?(:each_pair))
end

#store(key, value) ⇒ Object 



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# File 'lib/agrippa/mutable_hash.rb', line 55

def store(key, value)
    @state.store(key.to_sym, value)
    self
end