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Merge pull request #795 from ZhenhangTung/master

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fix interface implementation of student and employee
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astaxie
2017-02-27 15:11:43 +08:00
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parent 3fcf783093 bf4ef1e22c
commit 0e2322ff91
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@@ -14,7 +14,7 @@ Let's do some more work. We'll add one more method `Sing()` to them, along with
Now, Student has three methods called `SayHi()`, `Sing()` and `BorrowMoney()`, and Employee has `SayHi()`, `Sing()` and `SpendSalary()`.
This combination of methods is called an interface and is implemented by both Student and Employee. So, Student and Employee implement the interface: `SayHi()` and `Sing()`. At the same time, Employee doesn't implement the interface: `SayHi()`, `Sing()`, `BorrowMoney()`, and Student doesn't implement the interface: `SayHi()`, `Sing()`, `SpendSalary()`. This is because Employee doesn't have the method `BorrowMoney()` and Student doesn't have the method `SpendSalary()`.
This combination of methods is called an interface and is implemented by both Student and Employee. So, Student and Employee implement the interface: `SayHi()` and `Sing()`. At the same time, Employee doesn't implement the interface: `BorrowMoney()`, and Student doesn't implement the interface: `SpendSalary()`. This is because Employee doesn't have the method `BorrowMoney()` and Student doesn't have the method `SpendSalary()`.
### Type of Interface