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  1. class Options < Hash
  2.   def self.new(&a)
  3.     a = lambda{|h,k| h[k] = new(&a) } unless a
  4.     super(&a)
  5.   end
  6.   def method_missing(m, *a)
  7.     if m[-1] == "="
  8.       key = keys.find{|k| k.to_s == m[0...-1].to_s } || m[0...-1].to_sym
  9.       self[key] = a.first
  10.     else
  11.       key = keys.find{|k| k.to_s == m.to_s }
  12.       self[key]
  13.     end
  14.   end
  15. end
  16.  
  17. h = Options.new
  18. h[:a][:b][:c] = :foo
  19. h[:d] = :bar
  20.  
  21. p h
  22. p h.a
  23. p h.a.b.c
  24.  
  25. h.e.f = :baz
  26. p h.e
Success #stdin #stdout 0s 4760KB
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{:a=>{:b=>{:c=>:foo}}, :d=>:bar}
{:b=>{:c=>:foo}}
:foo
{:f=>:baz}
https://ideone.com/i2craY
language:
Ruby (ruby 2.5.5)
created:
12 years ago
visibility:
secret

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