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July 4, 2017 02:47
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| const getHalfOfChildsAge = compose( | |
| safeDivisionBy(2), | |
| getAge, | |
| getChild | |
| ) | |
| // getChild :: Person → Maybe Person | |
| // getAge :: Person → Maybe Number | |
| // safeDivisionBy :: Number → Number → Maybe Number |
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