Kas saaksid anda näiteid olukordadest, kus programmeerimiskeeles kasutatakse tüübi kinnitust (Type Assertion)?

In Go, Type Assertion is used to extract a specific type from an interface value. This is useful when you have a variable of type interface{}, and you know that it contains a specific type you want to work with.

Examples of usage:

• Extracting a specific type from an interface to call specific methods.
• Processing values returned from functions that return an interface.
• When you need to check if a variable implements a certain type, and perform the appropriate logic.

Code example:

var i interface{} = "hello"

// Type assertion with check
s, ok := i.(string)
if ok {
    fmt.Println("String:", s)
} else {
    fmt.Println("Not a string")
}

Performing type assertion without check, if the type does not match, the program will panic.