有人能举例说明一下恐慌和错误之间的确切区别以及何时使用它们吗?

I am researching the difference between panic and error for a long time but unfortunately I haven't found the exact answer. Can anyone help?

you can compare them with Exception, Error it's just Exception object, but panic(err) it's throw exceptionObject

Think of it like this:

panic() (a verb) is an action

error (a noun) is an entity

Once you have an error, you can do something with it (panic()ing is just one of many options here, others being ignoring the error, returning the error to the caller or taking some other error specific action)

Note that you don't necessarily need an error to panic().