Millistel juhtudel on vaja püüda ja töödelda paanikavea programme?

Panic error handling (panic) is necessary in cases where it is required to guarantee the correct termination of the program or recovery after critical errors, to prevent abrupt termination.

For example:

• In server applications, so that the entire service does not crash due to one error.
• When working with external resources, to properly close files, connections.
• In libraries, to provide users with the ability to handle critical errors.

For this, recover() is used inside a deferred function (defer), which catches the panic and allows the program to continue or terminate correctly.

Example:

func safeFunction() {
    defer func() {
        if r := recover(); r != nil {
            fmt.Println("Caught panic:", r)
        }
    }()

    // Code that may cause panic
    panic("something went wrong")
}