Created
August 3, 2016 12:51
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new_safe_hash.rb (multidimensional hash)
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| def new_safe_hash() | |
| ifnone = lambda { |hash, key| | |
| hash[key] = Hash.new(&ifnone) | |
| } | |
| Hash.new(&ifnone) | |
| end | |
| a = new_safe_hash() | |
| a['x']['y'] = 3 | |
| puts a | |
| # {"x"=>{"y"=>3}} |
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