Describe a scenario where you would use type assertions in a Go program.

  • To convert an interface type to a concrete type when you know the underlying type.
  • To enforce type safety in a dynamic type system.
  • To avoid type assertions altogether in favor of reflection.
  • To explicitly specify the type of an interface.
Type assertions in Go are primarily used to convert an interface type to a concrete type when you know the underlying type. This is useful when you need to access fields or methods specific to the concrete type. For example, when dealing with an interface{} that holds different types, you can use type assertions to safely extract and work with the actual types contained within the interface.
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