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jakeboxer/gist:5803136

Created June 18, 2013 06:44
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Memoizing methods with options
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gistfile1.rb
class Eminem
def spaghetti(options={})
@spaghetti ||= {}
@spaghetti[options] ||= Spaghetti.new(options)
end
end
e = Eminem.new
e.spaghetti # Calculates
e.spaghetti # Doesn't calculate
e.spaghetti(:creator => 'mom') # Calculates
e.spaghetti(:creator => 'mom') # Doesn't calculate
@nakajima
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nakajima commented Jun 18, 2013

You might be kinda burnt in 1.8.6: http://stackoverflow.com/questions/5075584/ruby-hash-as-key-to-a-hash

@jakeboxer
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jakeboxer commented Jun 18, 2013

Didn't Ruby start at 1.8.7?

@jumph4x
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jumph4x commented Jun 18, 2013

Easy to fix with http://www.ruby-doc.org/core-2.0/Hash.html#method-i-hash however, doesn't address key ordering and potential symbol/string misses

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