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ahernandezlopez/SequenceType+Upcast.swift

Last active March 21, 2018 07:20
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Useful for SequenceType upcasting, i.e. for upcasting "array of protocol implementers" to array of protocol
Raw
SequenceType+Upcast.swift
extension SequenceType {
func upcast<T, U where Self.Generator.Element == T>() -> [U] {
return flatMap {$0 as? U}
}
}
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