错误：“数组索引超出范围”在多维数组中 [英] Error: "array index out of range" in multidimensional array

问题描述

我声明了我的数组

var tile = [[Int]]()

之后我将其值初始化为

for (var index = 0; index < 4; index++)
    {
        for (var sindex = 0; sindex < 4; sindex++)
        {
        self.tile[index][sindex] = 0 // error here
            println("\(index) \(sindex)")

        }
    }

在运行时它给出错误数组索引超出范围

At run time it is giving an error "array index out of range"

推荐答案

评论员@C_X& @MartinR说，你的数组是空的。以下是如何根据需要初始化它...

As the commentators @C_X & @MartinR say, your array is empty. Here's how to initialise it as you want...

var tile = [[Int]](count:4, repeatedValue: [Int](count: 4, repeatedValue: 0))

for index in 0 ..< 4 {
    for sindex in 0 ..< 4 {
        tile[index][sindex] = 0 // no error here now...
        print("\(index) \(sindex)")
    }
}

...当然， 循环现在是多余的，如果你只想要零！

...of course, the for loops are now redundant, if you just want zeroes!

这篇关于错误：“数组索引超出范围”在多维数组中的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持IT屋！