a tic tac toe game in swift

main.swift
enum GameMarker: String {
    case X = "X"
    case O = "O"
    case empty = "-"
}

class TicTacToe {
    
    var gameBoard: [[GameMarker]] = [
        [.empty, .empty, .empty],
        [.empty, .empty, .empty],
        [.empty, .empty, .empty]
    ]
    
    var currentPlayer: GameMarker = .X
    
    func playMove(row: Int, column: Int) -> Bool {
        if gameBoard[row][column] == .empty {
            gameBoard[row][column] = currentPlayer
            swapPlayers()
            return true
        }
        return false
    }
    
    func swapPlayers() {
        if currentPlayer == .X {
            currentPlayer = .O
        } else {
            currentPlayer = .X
        }
    }
    
    func printBoard() {
        for row in gameBoard {
            print(row)
        }
    }
    
    func checkForWin() -> Bool {
        // Check rows
        for row in gameBoard {
            if row == [.X, .X, .X] || row == [.O, .O, .O] {
                return true
            }
        }
        
        // Check columns
        for i in 0...2 {
            if gameBoard[0][i] == gameBoard[1][i] && gameBoard[1][i] == gameBoard[2][i] && gameBoard[0][i] != .empty {
                return true
            }
        }
        
        // Check diagonals
        if gameBoard[0][0] == gameBoard[1][1] && gameBoard[1][1] == gameBoard[2][2] && gameBoard[0][0] != .empty {
            return true
        }
        if gameBoard[0][2] == gameBoard[1][1] && gameBoard[1][1] == gameBoard[2][0] && gameBoard[0][2] != .empty {
            return true
        }
        
        return false
    }
    
}

let game = TicTacToe()

game.playMove(row: 0, column: 0)
game.playMove(row: 1, column: 1)
game.playMove(row: 0, column: 2)
game.playMove(row: 1, column: 2)
game.playMove(row: 0, column: 1)
game.playMove(row: 2, column: 0)

game.printBoard()
print(game.checkForWin())
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