From 3452a02f55e1f7d8b86c0d4d73cd9eeef264caf8 Mon Sep 17 00:00:00 2001
From: Anthony Shoumikhin <anthony@shoumikh.in>
Date: Mon, 29 Jun 2015 22:04:50 -0700
Subject: [PATCH 1/2] Added Swift sample

Swift is still pretty tricky on console input, so here's a less or more standard way to read and parse some basic data types.
---
 ACC.swift | 32 ++++++++++++++++++++++++++++++++
 1 file changed, 32 insertions(+)
 create mode 100644 ACC.swift

diff --git a/ACC.swift b/ACC.swift
new file mode 100644
index 0000000..f3fc34d
--- /dev/null
+++ b/ACC.swift
@@ -0,0 +1,32 @@
+import Foundation
+
+protocol __{};extension String:__{};extension Int:__{};extension Int64:__{};extension Double:__{}
+class InputScanner {  //based on https://github.com/shoumikhin/StreamScanner
+    let source = NSFileHandle.fileHandleWithStandardInput()
+    let delimiters = NSCharacterSet.whitespaceAndNewlineCharacterSet()
+    var buffer: NSScanner?
+    func read<T: __>() -> T? {
+        if buffer == nil || buffer!.atEnd {
+            if let nextInput = NSString(data: source.availableData, encoding: NSUTF8StringEncoding) {
+                buffer = NSScanner(string: nextInput as String)}}
+        if buffer == nil { return nil }
+        var token: NSString?
+        if !buffer!.scanUpToCharactersFromSet(delimiters, intoString: &token) || token == nil { return nil }
+        buffer!.scanCharactersFromSet(delimiters, intoString: nil)
+        var ret: T? = nil
+        if ret is String? { return token as? T }
+        let scanner = NSScanner(string: token as! String)
+        switch ret {
+        case is Int? : var value: Int = 0; if scanner.scanInteger(&value) { ret = value as? T }
+        case is Int64? : var value: Int64 = 0; if scanner.scanLongLong(&value) { ret = value as? T }
+        case is Double? : var value: Double = 0; if scanner.scanDouble(&value) { ret = value as? T }
+        default : ret = nil}
+        return ret}}
+let io = InputScanner()
+
+if
+    let a: Int = io.read(),
+    let b: Int = io.read()
+{
+    print("\(a + b)\n\(a * b)")
+}

From 73af35e3ee11c77378603038d54b1ad0b94fa53d Mon Sep 17 00:00:00 2001
From: Anthony Shoumikhin <anthony@shoumikh.in>
Date: Sun, 5 Feb 2017 16:55:58 -0800
Subject: [PATCH 2/2] Update ACC.swift

---
 ACC.swift | 40 ++++++++++++++++++++--------------------
 1 file changed, 20 insertions(+), 20 deletions(-)

diff --git a/ACC.swift b/ACC.swift
index f3fc34d..df115be 100644
--- a/ACC.swift
+++ b/ACC.swift
@@ -2,26 +2,26 @@ import Foundation
 
 protocol __{};extension String:__{};extension Int:__{};extension Int64:__{};extension Double:__{}
 class InputScanner {  //based on https://github.com/shoumikhin/StreamScanner
-    let source = NSFileHandle.fileHandleWithStandardInput()
-    let delimiters = NSCharacterSet.whitespaceAndNewlineCharacterSet()
-    var buffer: NSScanner?
-    func read<T: __>() -> T? {
-        if buffer == nil || buffer!.atEnd {
-            if let nextInput = NSString(data: source.availableData, encoding: NSUTF8StringEncoding) {
-                buffer = NSScanner(string: nextInput as String)}}
-        if buffer == nil { return nil }
-        var token: NSString?
-        if !buffer!.scanUpToCharactersFromSet(delimiters, intoString: &token) || token == nil { return nil }
-        buffer!.scanCharactersFromSet(delimiters, intoString: nil)
-        var ret: T? = nil
-        if ret is String? { return token as? T }
-        let scanner = NSScanner(string: token as! String)
-        switch ret {
-        case is Int? : var value: Int = 0; if scanner.scanInteger(&value) { ret = value as? T }
-        case is Int64? : var value: Int64 = 0; if scanner.scanLongLong(&value) { ret = value as? T }
-        case is Double? : var value: Double = 0; if scanner.scanDouble(&value) { ret = value as? T }
-        default : ret = nil}
-        return ret}}
+  let source = FileHandle.standardInput
+  let delimiters = CharacterSet.whitespacesAndNewlines
+  var buffer: Scanner?
+  func read<T: __>() -> T? {
+    if buffer?.isAtEnd ?? true {
+      if let nextInput = String(data: source.availableData, encoding: .utf8) {
+        buffer = Scanner(string: nextInput) }}
+    if buffer == nil { return nil }
+    var token: NSString?
+    guard buffer?.scanUpToCharacters(from: delimiters, into: &token) ?? false,
+      let string = token as? String else { return nil }
+    buffer?.scanCharacters(from: delimiters, into: nil)
+    let scanner = Scanner(string: string)
+    switch T.self {
+    case is String.Type: return token as? T
+    case is Int.Type : var value: Int = 0; if scanner.scanInt(&value) { return value as? T }
+    case is Int64.Type : var value: Int64 = 0; if scanner.scanInt64(&value) { return value as? T }
+    case is Double.Type : var value: Double = 0; if scanner.scanDouble(&value) { return value as? T }
+    default : break }
+    return nil }}
 let io = InputScanner()
 
 if