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August 11, 2019 18:01
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guard clauses: longer example
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| def func_not_guarded(self, param): | |
| if param == 'something': | |
| self.counter += 1 | |
| if self.counter > 10: | |
| self.reached_ten() | |
| else: | |
| if self.counter < 5: | |
| self.has_not_reached_5() | |
| else: | |
| self.has_not_reached_5() | |
| else: | |
| self.counter -= 1 | |
| def func_guarded(self, param): | |
| if param != 'something': | |
| self.counter -= 1 | |
| # You can call return even if the function doesn't return anything | |
| return | |
| # Important path in a low indentation level | |
| self.counter += 1 | |
| if self.counter > 10: | |
| self.reached_ten() | |
| return | |
| # By returning early, you don't need `else` statements | |
| if self.counter < 5: | |
| self.has_not_reached_5() | |
| return | |
| self.has_not_reached_5() |
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