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@FranDepascuali
Created August 23, 2016 13:34
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protocol Downloader {
func fetch(from url: SecureURLType)
}
protocol SecureURLType {
init?(from url: URL, validator: URL -> Bool)
}
private let DefaultValidator: URL -> Bool = { _ in true }
struct SecureURL: SecureURLType {
private let _url: URL
init?(from url: URL, validator: URL -> Bool = DefaultValidator) {
guard validator(url) else {
return nil
}
_url = url
}
}
let url = NSURL(string: "https://www.google.com.ar/")!
guard let secureURL = SecureURL(from: url) else {
print("Cannot make a request to an internal ip!")
}
@alanhala
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Che que es NSURL? No es un nombre claro

@alanhala
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print("Cannot make a request to an internal ip!") Hardcoded string

@gnardini
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let DefaultValidator: URL -> Bool = { _ in true }
Posta, te parece que _ in true es claro? Vos que tanto queres que todo sea claro. Y este encima es un caso tonto. No es intuitivo, simplemente es una 'convencion' de funcional.

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