小编jga*_*abb的帖子

在我的reactjs应用程序中，我使用了一个名为pidegon-maps的轻量级地图库来显示船只位置。在不尝试使用更大的库（传单、谷歌地图反应）的情况下，我尝试为船只所走的路线制作动画。

从这个问题中汲取灵感，我尝试创建一个类似的实现。

useEffect(() => {

let start = [0.108266, 52.202758];
let end = [0.11556, 52.201733];

const speedFactor = 500;

let diffX = parseFloat(end[0]) - parseFloat(start[0]);
let diffY = parseFloat(end[1]) - parseFloat(start[1]);
let sfX = diffX / speedFactor;
let sfY = diffY / speedFactor;

let i = 0;
let j = 0;

let lineCoordinates = [];

while (i < diffX || Math.abs(j) < Math.abs(diffY)) {
  lineCoordinates.push([start[0] + i, start[0] + j]);

  if (i < diffX) {
    i += …

我在尝试编译代码时遇到错误.错误如下:

warning: incompatible pointer types passing
  'void *(threadData *)' to parameter of type 'void * (*)(void *)'
  [-Wincompatible-pointer-types]
        pthread_create(&threads[id], NULL, start,&data[id]);

我正在尝试将一个结构传递给函数,void * start(threadData* data)这一直让我失望.有任何想法吗？

我对一个视图有两次局部。Partial 不使用循环并具有基本验证。

这是部分视图代码：

 <div class="col-md-4">
                    @Html.LabelFor(model => model.ZipCode, new { @class = "control-label " })
                    @Html.TextBoxFor(model => model.ZipCode, new { @class = "form-control ",  tabindex = "4" })
                    @Html.ValidationMessageFor(model => model.ZipCode)
                </div>

这是我的主要观点，调用它两次：

<div id="homeaddress">
                                @if (Model == null)
                                {
                                @Html.Partial("~/Views/AddrPartial.cshtml", new Address())
                            }
                            else
                            {
                                @Html.Partial("~/Views/AddrPartial.cshtml", Model.HomeAddress)
                            }
                        </div>

<div id="mailingaddress">
                                @if (Model == null)
                                {
                                    @Html.Partial("~/Views/AddrPartial.cshtml", new Address())
                                }
                                else
                                {
                                    @Html.Partial("~/Views/AddrPartial.cshtml", Model.MailingAddress)
                                }
                            </div>

然后只有“homeadrress”div 验证有效...这是我的模型的设置方式：

    public class Information
   {
    public Address HomeAddress …