Created
June 6, 2019 07:38
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Avoid using null in function
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| fun serveCustomer(maybeCustomer: Customer?) { | |
| maybeCustomer ?: return // simply return | |
| greet(customer) | |
| customer.pickTable() | |
| giveMenuToCustomer(customer) | |
| forgetAboutCustomer(customer) | |
| } |
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