首页 \ 问答 \ 如何在Swift中找到2d数组中所有元素的总和?(How to find the summation of all elements in 2d array in Swift?)

如何在Swift中找到2d数组中所有元素的总和?(How to find the summation of all elements in 2d array in Swift?)

假设我有以下2d数组:

let my2dArray = [[01, 02, 03, 04],
                 [05, 06, 07, 08],
                 [09, 10, 11, 12],
                 [13, 14, 15, 16]]

获取my2dArray中所有元素总和的最简单方法是什么?

假设输出应该是:

01 + 02 + 03 + 04 + 05 + 06 + 07 + 08 + 09 + 10 + 11 + 12 + 13 + 14 + 15 + 16 = 136


Let's say that I have the following 2d array:

let my2dArray = [[01, 02, 03, 04],
                 [05, 06, 07, 08],
                 [09, 10, 11, 12],
                 [13, 14, 15, 16]]

What is the easiest way to get the summation of all elements in my2dArray?

Assuming that the output should be:

01 + 02 + 03 + 04 + 05 + 06 + 07 + 08 + 09 + 10 + 11 + 12 + 13 + 14 + 15 + 16 = 136


原文:https://stackoverflow.com/questions/41292792
更新时间:2024-03-11 22:03

最满意答案

如果它是第一个元素,您可以尝试使用each索引并仅调用回调

就像是:

return this.each(function(i) {
   ....
   ....
   complete: function() {
        i==0 && a.callback &&  a.callback()
  }

You could try using the index of each and only call the callback if it is the first element

Something like:

return this.each(function(i) {
   ....
   ....
   complete: function() {
        i==0 && a.callback &&  a.callback()
  }

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