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What is the difference between Go's type assertions and type conversions for handling and converting dynamic types in Go programs?

Go's type assertions and type conversions are both used for handling and converting dynamic types in Go programs, but they have different purposes and behaviors.

Type assertions are used to assert or test the concrete type of an interface value at runtime. They return two values: the underlying value and a boolean indicating whether the assertion succeeded or not. If the assertion succeeds, the underlying value can be used as the asserted type. If the assertion fails, a runtime panic occurs. Type assertions are typically used in situations where the program needs to determine the concrete type of an interface value at runtime and perform different actions based on the result.

Type conversions, on the other hand, are used to convert a value from one type to another. They are used to convert between compatible types, such as converting an int to a float64. Type conversions are typically used when the program needs to convert a value from one type to another for further processing or to satisfy an interface.

In summary, type assertions are used to test the concrete type of an interface value at runtime, while type conversions are used to convert a value from one type to another.

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