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| class Obj(object): | |
| def method1(self): | |
| return do_stuff(self) | |
| def method2(self): | |
| return do_other_stuff(self) | |
| def method3(self): | |
| return do_more_stuff(self) | |
| result = Obj().method1().method2().method3() | |
| # Equivalent using function composition. | |
| def compose(*funcs): | |
| return lambda xx: reduce(lambda val, func: func(val), reversed(funcs), xx) | |
| composed = compose( | |
| Obj.method1, | |
| Obj.method2, | |
| Obj.method3 | |
| ) | |
| result2 = composed(Obj()) | |
| assert result == result2 |
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