add iOS

iOS-SwiftUI-Code/GRDB.swift-6.29.3/Documentation/Playgrounds/MyPlayground.playground/Contents.swift

@@ -0,0 +1,46 @@
+// To run this playground, select and build the GRDB scheme.
+
+import GRDB
+
+var configuration = Configuration()
+configuration.prepareDatabase { db in
+    db.trace { print("SQL> \($0)") }
+}
+let dbQueue = try DatabaseQueue(configuration: configuration)
+
+struct Player: Codable, FetchableRecord, MutablePersistableRecord {
+    var id: Int64?
+    var name: String
+    var score: Int
+    
+    mutating func didInsert(_ inserted: InsertionSuccess) {
+        id = inserted.rowID
+    }
+}
+
+try dbQueue.write { db in
+    try db.create(table: "player") { t in
+        t.autoIncrementedPrimaryKey("id")
+        t.column("name", .text).notNull()
+        t.column("score", .integer).notNull()
+    }
+    
+    do {
+        var player = Player(id: nil, name: "Arthur", score: 100)
+        try player.insert(db)
+        player = Player(id: nil, name: "Barbara", score: 100)
+        try player.insert(db)
+    }
+    
+    do {
+        let players = try Player.fetchAll(db)
+        for player in players {
+            print(player)
+        }
+    }
+    
+    do {
+        let count = try Player.fetchCount(db)
+        print(count)
+    }
+}