CODEWITHSUNDEEP
swiftswift2protocols
Salman Hasrat Khan
Salman Hasrat Khan

Reputation: 2006

Swift 2.0 Protocol Extensions on Any Protocol

I'm trying to add a method on the Any Protocol in swift 2.0, but I get this error, Non-nominal type 'Any' (aka protocol<>) cannot be extended.

Any idea why am I unable to add a protocol extension to the Any type? What could be a possible workaround to this limitation? My intention is to add a getter called isPrimitiveType that returns true if the object is a primitive or is an actual object.

Upvotes: 2

Views: 283

Answers (1)

Qbyte
Qbyte

Reputation: 13243

As of Swift 2.1 you cannot extend protocols like Any and AnyObject. Probably in future you can do that.

As workaround you can use a generic global free function:

func isPrimitive<T>(value: T) -> Bool {
    return value is String || value is Bool || value is Int || value is Float || value is Double
}

Upvotes: 3

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