How do you define and implement an interface in Go?

  • By using the "interface" keyword.
  • By providing method implementations.
  • By defining a struct with the same methods.
  • By creating a new data type.
In Go, you define an interface by using the "interface" keyword, followed by a set of method signatures. To implement an interface, a type must provide method implementations for all the methods specified in the interface. This is done implicitly in Go; you don't need to explicitly state that a type implements an interface. As long as a type has methods that match the interface's method signatures, it's considered to implement the interface. This dynamic binding enables polymorphism and flexibility in Go code.
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