# File lib/pdf/writer/ohash.rb, line 16
16:   def initialize(*args)
17:     @keys = []
18:     super
19:   end

    # File lib/pdf/writer/ohash.rb, line 21
21:   def []=(key, val)
22:     @keys << key unless has_key?(key)
23:     super
24:   end

    # File lib/pdf/writer/ohash.rb, line 26
26:   def delete(key)
27:     @keys.delete(key) if has_key?(key)
28:     super
29:   end

    # File lib/pdf/writer/ohash.rb, line 31
31:   def each
32:     @keys.each { |k| yield k, self[k] }
33:   end

    # File lib/pdf/writer/ohash.rb, line 35
35:   def each_key
36:     @keys.each { |k| yield k }
37:   end

    # File lib/pdf/writer/ohash.rb, line 39
39:   def each_value
40:     @keys.each { |k| yield self[k] }
41:   end

    # File lib/pdf/writer/ohash.rb, line 43
43:   def first
44:     self[@keys[0]]
45:   end

    # File lib/pdf/writer/ohash.rb, line 51
51:   def first?(item)
52:     self[@keys[0]] == item
53:   end

    # File lib/pdf/writer/ohash.rb, line 47
47:   def last
48:     self[@keys[-1]]
49:   end

    # File lib/pdf/writer/ohash.rb, line 55
55:   def last?(item)
56:     self[@keys[-1]] == item
57:   end