add close method

[leijux]

close Calls the close method on all singleton instances within the container.

[miladrahimi]

Do you believe it's truly the responsibility of the IOC container to handle the closure of services?

[leijux]

Do you believe it's truly the responsibility of the IOC container to handle the closure of services?

I tried to close all instances with Close(c container.Container), but concrete.isSingleton and concrete.make are unexported fields and methods.

Thanks for your help!

[leijux]

I think it is necessary to condition the close method.

1. have no impact on existing functions and methods
2. Convenient to close db like services

[miladrahimi]

I know that close is not a special method, and I don't understand why all objects should have such a method. Could you explain more about it?

[leijux]

I know that close is not a special method, and I don't understand why all objects should have such a method. Could you explain more about it?

Although 'close' is not a special method, some objects conventionally use it to release resources such as databases or files.

Therefore, if the Singleton has a 'close' method, it should be called to release the resource.

v := reflect.ValueOf(instance)
mm := v.MethodByName("Close")
if mm.IsValid() {}