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February 1, 2017 17:07
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meta-programming that add method of keys_to_sym, which convert every keys to symbol type from string.
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| class Hash | |
| def keys_to_sym | |
| self.inject({}) do |hash, (key, value)| | |
| value = value.keys_to_sym if value.class == Hash | |
| hash[key.to_sym] = value | |
| hash | |
| end | |
| end | |
| end |
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