Class: PDF::Writer::OHash

Inherits:
Hash show all
Defined in:
lib/extensions/pdf-writer/pdf/writer/ohash.rb

Overview

Based on [ruby-talk:20551]. Updated to (hopefully) be 1.8 friendly.

Instance Method Summary collapse

Methods inherited from Hash

#empty?, #fetch_r, #index, #inspect, #invert, #merge, #pretty_print, #pretty_print_cycle, #replace, #reverse_merge, #reverse_merge!, #stringify_keys, #symbolize_keys, #to_a, #update, #with_indifferent_access

Constructor Details

#initialize(*args) ⇒ OHash

Returns a new instance of OHash.



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# File 'lib/extensions/pdf-writer/pdf/writer/ohash.rb', line 16

def initialize(*args)
  @keys = []
  super
end

Instance Method Details

#[]=(key, val) ⇒ Object 



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# File 'lib/extensions/pdf-writer/pdf/writer/ohash.rb', line 21

def []=(key, val)
  @keys << key unless has_key?(key)
  super
end

#delete(key) ⇒ Object 



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# File 'lib/extensions/pdf-writer/pdf/writer/ohash.rb', line 26

def delete(key)
  @keys.delete(key) if has_key?(key)
  super
end

#each ⇒ Object 



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# File 'lib/extensions/pdf-writer/pdf/writer/ohash.rb', line 31

def each
  @keys.each { |k| yield k, self[k] }
end

#each_key ⇒ Object 



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# File 'lib/extensions/pdf-writer/pdf/writer/ohash.rb', line 35

def each_key
  @keys.each { |k| yield k }
end

#each_pair ⇒ Object 



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# File 'lib/extensions/pdf-writer/pdf/writer/ohash.rb', line 14

alias_method :each_pair, :each

#each_value ⇒ Object 



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# File 'lib/extensions/pdf-writer/pdf/writer/ohash.rb', line 39

def each_value
  @keys.each { |k| yield self[k] }
end

#first ⇒ Object 



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# File 'lib/extensions/pdf-writer/pdf/writer/ohash.rb', line 43

def first
  self[@keys[0]]
end

#first?(item) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/extensions/pdf-writer/pdf/writer/ohash.rb', line 51

def first?(item)
  self[@keys[0]] == item
end

#last ⇒ Object 



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# File 'lib/extensions/pdf-writer/pdf/writer/ohash.rb', line 47

def last
  self[@keys[-1]]
end

#last?(item) ⇒ Boolean

Returns:

  • (Boolean) 


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# File 'lib/extensions/pdf-writer/pdf/writer/ohash.rb', line 55

def last?(item)
  self[@keys[-1]] == item
end

#store ⇒ Object 



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# File 'lib/extensions/pdf-writer/pdf/writer/ohash.rb', line 13

alias_method :store, :[]=