objective-c中数组的大小限制？ [英] size limit on arrays in objective-c?

问题描述

我在目标C中的结构中声明一个数组，如下所示

I'm declaring an array within a struct in objective C as follows

struct myStruct {
    int array[size];
};

和另一个

and another one

struct myStruct2 {
    double array[size][size];
};

我用一个EXC_BAD_ACCESS代码= 1错误将我的头撞在墙上一段时间然后开始玩我的尺寸。结果是1022很好（1023个元素），但是1023个（1024个元素）并且最多可以解决错误。



为什么？有没有解决的办法？ 2 ^ 10 对我不利，这不是巧合。



我真的喜欢至少去2 ^ 14左右。



其他奇怪的东西。在xcode中，当我将鼠标悬停在我的变量size上时，即使已经定义了它，也会显示1457743029，

I banged my head against the wall for a while with an EXC_BAD_ACCESS code=1 error then started playing with my size. Turns out 1022 is fine (1023 elements) but 1023 (1024 elements) and up kicks out the error.

Why? Is there a way around this? It can't be a coincidence that 2^10 is crapping out on me.

I'd really like to go up to about 2^14 at least.

Something else that is strange. In xcode when I hover over my variable "size" it shows 1457743029 even though it is defined,

const int size = 1022;

什么是吗？



编辑：我已经从声明中更新了我的代码，例如

What is that?

edit: I have updated my code from declarations like

myStruct instanceOfStruct;

to

to

struct myStruct *instanceOfStruct = malloc(sizeof(struct myStruct) * size);
memset(instanceOfStruct,0,sizeof(struct myStruct) * size);

但是，我不确定我的大小是否真的应该是大小还是1.我已经包括在内结构中的数组大小 - 我在这里需要占用内存量吗？

However, I am unsure whether my "size" should really be "size" or 1. I've already included array size in the struct - am I squaring the amount of memory I need here?

推荐答案

c＃仅限于可用内存量。



Xcode不是c＃，你的问题不是c＃它是Apple平台的限制。



显然你的是在IOS上更受限制。



如果你想你需要有大型数组，那么尝试不同的方法和算法。

c# is only limited to the amount of memory available.

Xcode is not c#, and your problem is not c# it is the limits of the Apple platform.

Obviously your are more limited on IOS.

If you think you need to have large arrays, then try a different approach and algorithm.

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