masakih

struct YesIterator<Value>: IteratorProtocol {
    private var value: Value
    private var count: Int
    
    init(value: Value, count: Int) {
        self.value = value
        self.count = count
    }
    mutating func next() -> Value? {
        guard count > 1 else { return nil }

masakih

private typealias StringIMP = @convention(c) (AnyObject, Selector) -> NSString

private let stringSelector = #selector(getter: NSAttributedString.string)
private var stringIMP: StringIMP?

extension NSAttributedString {
    
    private var stringImp: StringIMP {
        
        if let i = stringIMP { return i }

masakih

@dynamicMemberLookup
struct Point {
    var cgPoint: CGPoint
    
    subscript(dynamicMember keyPath: WritableKeyPath<CGPoint, CGFloat>) -> Float {
        get { Float(cgPoint[keyPath: keyPath]) }
        set(value) { cgPoint[keyPath: keyPath] = CGFloat(value) }
    }
}

masakih

import Cocoa
import Combine

public protocol ActionPerfomer: AnyObject {
    
    var target: AnyObject?  { get set }
    var action: Selector? { get set }
}

extension NSControl: ActionPerfomer {}

masakih

func ommit(_ pType: NSPasteboard.PasteboardType) -> Bool {
    
    let a = [
        "rtf",
        "NeXT",
        "HTML",
        "Web"
    ]
    
    let r = pType.rawValue.lowercased()

masakih

enum IfResult<T> {
    case `false`
    case value(T)
    
    @discardableResult
    func elseIf(_ condition: @autoclosure () -> Bool, _ f: () -> T) -> IfResult {
        switch self {
        case .false: return condition() ? .value(f()) : .false
        default: return self
        }

masakih

func split<Element>(_ array: [Element], _ n: Int) -> [ArraySlice<Element>] {
  
  func g(_ array: ArraySlice<Element>, _ n: Int) -> [ArraySlice<Element>] {
    
    let a = array.prefix(n)
    guard a.count != 0 else { return [] }
    
    return [a] + g(array.dropFirst(n), n)
  }
  

masakih

海防艦　淡路

• 1943年

  • 6月1日　起工
  • 8月31日　命名
  • 10月10日　進水

• 1944年

  • 1月25日　竣工（本籍：呉鎮守府

• 呉鎮守府警備海防艦

masakih

func fizzBuzz1(_ n: Int) -> String {
  switch (n.isMultiple(of: 3), n.isMultiple(of: 5)) {
  case (true, true): return "FizzBuzz"
  case (true, false): return "Fizz"
  case (false, true): return "Buzz"
  default: return "\(n)"
  }
}

masakih

extension Result {

   @discardableResult
   func ifFailure(_ f: (Failure) -> Void) -> Result {
       if case let .failure(e) = self { f(e) }
       return self
   }
}

extension Result where Failure: OptionSet, Failure == Failure.Element {