編譯器錯誤：找不到成員與&&

Question

var card:[[Int]] = bank[numberOfMarked].card; 

    if ((card[0][0] == 0) && (card[1][1] == 0) && (card[2][2] == 0) && (card[3][3] == 0) && (card[4][4] == 0)) 
    { 
    return true; 
    } 

「標」我正在錯誤「找不到成員‘下標’和編譯器指向最後& &

Answer 1

我倒是file a bug。 - 我得到這個錯誤，以及：note: expression was too complex to be solved in reasonable time; consider breaking up the expression into distinct sub-expressions與表達無可厚非，但使用它的斯威夫特，現在你需要把它分解成幾個Bool變量：

let firstTwo = card[0][0] == 0 && card[1][1] == 0 
let lastThree = card[2][2] == 0 && card[3][3] == 0 && card[4][4] == 0 
if firstTwo && lastThree { 
    return true 
}