公共职能之间的耦合(Coupling between public functions)

编程入门行业动态更新时间:2024-10-07 09:26:22

可以说，我有一个叫做do3（）的函数为了使这个函数起作用，我需要执行函数do1（）和do2（）。

但是，do1（）和do2（）也可能需要其他的东西（可能为do4（））

所有这些功能都是公开的（并且必须是公开的）。

问题，我应该如何实现代码？

选项1 ：

function do3() { do2() do whatever is needed for do3 } function do2() { do1() do whatever is needed for do2 } function do1() { do whatever is needed for do1 }

所以如果我打电话给do3（），我相信一切都会完成，尽管耦合会出现

选项2

function do3() { do whatever is needed for do3 } function do2() { do whatever is needed for do2 } function do2() { do whatever is needed for do1 }

所以当我想打电话给do3（）我必须

do1() do2() do3()

我觉得第二种选择更好，因为它没有耦合，但是我不能真正解释为什么，它更像是一种感觉。我认为，如果我使用选项一，一天我更改do2（）我可能有问题。

但是，使用选项2时，我必须确保每次使用do3时都要调用do1和do2。

如果有人有一个更好的主意（选项3）会很好。

谢谢

Lets say I have a function called do3() In order for that function to work I need the functions do1() and do2() be executed.

However, do1() and do2() could also be needed for other stuff (maybe for do4())

All these functions are public (and must be public).

Question, how should i implement the code?

Option 1 :

function do3() { do2() do whatever is needed for do3 } function do2() { do1() do whatever is needed for do2 } function do1() { do whatever is needed for do1 }

So if i call do3(), i am sure that everything will be done, although coupling will appear

Option 2

function do3() { do whatever is needed for do3 } function do2() { do whatever is needed for do2 } function do2() { do whatever is needed for do1 }

So when i want to call do3() i have to

do1() do2() do3()

I feel that the second option is better as it has less coupling, however I cannot really explain why, it is more like a feeling. I think that if I use option one and one day I change do2() I may have problems.

With option 2 however I must be sure to call do1 and do2 every time i want to use do3.

If someone has a better idea (option 3?) would be great to.

Thanks