CODEWITHSUNDEEP
swifttypescasting
minch
minch

Reputation: 331

Ambiguous reference

I have a simple dot product function:

func dotProduct(vectorA: [Float], vectorB: [Float]) -> [Float] {
    return map(zip(vectorA, vectorB), *)
}

However, it raises the following error

Ambiguous reference to member '*'

Any ideas? It seems the type of both vectorA and vectorB are explicitly defined as [Float].

Upvotes: 0

Views: 255

Answers (1)

Will Richardson
Will Richardson

Reputation: 7970

It works if call map on the zipped list:

func dotProduct(vectorA: [Float], vectorB: [Float]) -> [Float] {
    return zip(vectorA, vectorB).map(*)
}

Seems Swift's inference is a bit lacking.

Upvotes: 2

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