Add dependency on swift-argument-parser

Wrap executable in ParseableCommand

Author: mattt

Package.swift

@@ -23,14 +23,20 @@ let package = Package(
         .package(name: "DeckOfPlayingCards",
                  url: "https://github.com/apple/example-package-deckofplayingcards.git",
                  from: "3.0.0"),
+        .package(name: "swift-argument-parser",
+                 url: "https://github.com/apple/swift-argument-parser.git",
+                 from: "0.4.4"),
     ],
     targets: [
         // Targets are the basic building blocks of a package. A target can define a module or a test suite.
         // Targets can depend on other targets in this package, and on products in packages which this package depends on.
         .target(
             name: "Dealer",
             dependencies: [
-                .byName(name: "DeckOfPlayingCards")
+                .product(name: "DeckOfPlayingCards",
+                         package: "DeckOfPlayingCards"),
+                .product(name: "ArgumentParser",
+                         package: "swift-argument-parser")
             ]),
         .testTarget(
             name: "DealerTests",

Sources/Dealer/main.swift

@@ -14,17 +14,25 @@ srandom(UInt32(clock()))
 #endif
 
 import DeckOfPlayingCards
+import ArgumentParser
 
-let numberOfCards = 10
+struct Deal: ParsableCommand {
+    @Argument(help: "The number of cards to deal.")
+    var numberOfCards: Int = 10
 
-var deck = Deck.standard52CardDeck()
-deck.shuffle()
+    mutating func run() throws {
+        var deck = Deck.standard52CardDeck()
+        deck.shuffle()
 
-for _ in 0..<numberOfCards {
-    guard let card = deck.deal() else {
-        print("No More Cards!")
-        break
-    }
+        for _ in 0..<numberOfCards {
+            guard let card = deck.deal() else {
+                print("No More Cards!")
+                break
+            }
 
-    print(card)
+            print(card)
+        }
+    }
 }
+
+Deal.main()