Sha256: d2f1a2d9972838209f440c437c3f82c42f5135b576e6f57fbe1cba48e3c86b5b
Contents?: true
Size: 905 Bytes
Versions: 266
Compression:
Stored size: 905 Bytes
Contents
import Foundation
struct Grains {
enum GrainsError: Error {
case inputTooLow(String)
case inputTooHigh(String)
}
static func square(_ num: Int) throws -> UInt64 {
guard num >= 1 else {
let message = "Input[\(num)] invalid. Input should be between 1 and 64 (inclusive)"
throw GrainsError.inputTooLow(message)
}
guard num <= 64 else {
let message = "Input[\(num)] invalid. Input should be between 1 and 64 (inclusive)"
throw GrainsError.inputTooHigh(message)
}
let one: UInt64 = 1
let shift = UInt64(num - 1)
return one << shift
}
static var total: UInt64 {
let numbers = (1...64).map { $0 }
return numbers.reduce(UInt64(0)) {
guard let squared = try? square($1) else { return $0 }
return $0 + squared
}
}
}
Version data entries
266 entries across 266 versions & 1 rubygems