Class: ClosedStruct

Inherits:
Object
  • Object
show all
Defined in:
lib/closed_struct.rb,
lib/closed_struct/version.rb

Constant Summary collapse

VERSION = 
"1.0.0"

Instance Method Summary collapse

Constructor Details

#initialize(contents, &block) ⇒ ClosedStruct

Returns a new instance of ClosedStruct.



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# File 'lib/closed_struct.rb', line 4

def initialize(contents, &block)
  @contents = contents.dup

  singleton_class = (class << self; self; end)
  @contents.each do |key, value|
    raise ArgumentError.new("Cannot define #{key} as it already exists") if respond_to?(key)
    singleton_class.send(:define_method, key) { value }
  end

  singleton_class.class_eval(&block) if block_given?
end

Instance Method Details

#==(other) ⇒ Object Also known as: eql? 



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# File 'lib/closed_struct.rb', line 24

def ==(other)
  (other.class == self.class) && (other.to_h == self.to_h)
end

#each_pair ⇒ Object 



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# File 'lib/closed_struct.rb', line 33

def each_pair
  return enum_for(:each_pair) unless block_given?

  @contents.each_pair do |key, value|
    yield key, value
  end
end

#empty? ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/closed_struct.rb', line 29

def empty?
  @contents.empty?
end

#hash ⇒ Object 



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# File 'lib/closed_struct.rb', line 20

def hash
  @contents.hash
end

#to_h ⇒ Object 



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# File 'lib/closed_struct.rb', line 16

def to_h
  @contents
end