How Do I Convert a Custom String Type to a Standard String in Go?

Converting a Custom String Type to String in Go

In Go, you may encounter custom types that wrap around built-in types like strings. While convenient, these custom types can introduce challenges when attempting to retrieve the underlying value.

Consider this example:

type CustomType string

const (
    Foobar CustomType = "somestring"
)

func SomeFunction() string {
    return Foobar
}

When attempting to compile this code, you'll encounter an error: "cannot use Foobar (type CustomType) as type string in return argument."

To resolve this issue and retrieve the string value of Foobar ("somestring"), you need to explicitly convert the custom type to a string. This can be achieved using the following code:

func SomeFunction() string {
    return string(Foobar)
}

By converting the CustomType value to a string, you can now successfully return and manipulate it as a standard string within your function.

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