英文:
Simplify recurring switch cases in golang
问题
我正在尝试理解是否有更好的方法来简化在golang中重复的switch case。我有一个方法可以返回多个错误，但我只对其中的3个特定错误感兴趣，我需要返回一个特定的注释错误而不是通用错误。然而，case1、case2返回err1、err2，但是在case3的情况下，我需要使用不同的参数调用相同的方法，并处理方法返回的err1、err2。如果你有任何建议，请提供。目前，我是按照下面的方式处理，但我想看看是否可以简化调用case1、case2的重复性。
_, err := doSomething(var1)
if err != nil {
switch err.Error() {
case case1:
return err1
case case2:
return err2
case case3:
_, err := doSomething(var2)
switch err.Error() {
case case1:
return err1
case case2:
return err2
default:
return err
}
default:
return err
}
}
如果需要更多细节或对问题本身需要更多澄清，请告诉我。
提前感谢。
英文:
I am trying to understand if there is a better way to simplify recurring switch cases in golang. I have a method that can return multiple errors, but I am interested in 3 specific errors where I need to return a specific annotated error than the generic error. However case1, case2 return err1, err2 But incase of case3 I need to call the same method with different parameters and also handle if the method return err1, err2. Please provide any suggestions if you have. Currently I am handling in the below way but trying to see if I can simplify the repetitiveness of calling case1, case2.
_, err := doSomething(var1)
if err != nil {
switch err.Error() {
case case1:
return err1
case case2:
return err2
case case3:
_, err := doSomething(var2)
switch err.Error() {
case case1:
return err1
case case2:
return err2
default:
return err
}
default:
return err
Please let me know if you need more details or needs more clarification on my question itself.
Thanks in advance.
答案1
得分: 6
将特殊情况的错误进行翻译，并继续常规处理。
_, err := doSomething(var1)
if err != nil {
if err.Error() == case3 {
_, err = doSomething(var2)
}
switch err.Error() {
case case1:
return err1
case case2:
return err2
default:
return err
}
}
英文:
Translate the error for the special case. Continue on to the common handling.
_, err := doSomething(var1)
if err != nil {
if err.Error() == case3 {
_, err = doSomething(var2)
}
switch err.Error() {
case case1:
return err1
case case2:
return err2
default:
return err
}
}
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