我想让A、B和C在中间对齐。

怎样才能让D完全向右移动呢?

之前:

后:

ul { 填充:0; 保证金:0; 显示:flex; flex-direction:行; justify-content:中心; 对齐项目:中心; ｝ 李{ 显示:flex; 保证金:1 px; 填充:5 px; 背景:# aaa级; ｝ 李:胎{ 背景:# ddd; /*魔术扔到右边*/ ｝ < ul > <李> < /李> <李> B < /李> <李> C < /李> <李> D < /李> < / ul >

https://jsfiddle.net/z44p7bsx/

在三行布局中:

顶部行应该根据其内容调整大小 底部一行应该有一个固定的像素高度 中间的行应该扩展以填满容器

问题是，当主要内容展开时，它会压缩页眉和页脚行:

section { display: flex; flex-flow: column; align-items: stretch; height: 300px; } header { flex: 0 1 auto; background: tomato; } div { flex: 1 1 auto; background: gold; overflow: auto; } footer { flex: 0 1 60px; background: lightgreen; /* fixes the footer: min-height: 60px; */ } <section> <header> header: sized to content <br>(but is it really?) </header> <div> main content: fills remaining space<br> x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br> <!-- uncomment to see it break - -> x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br> x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br> x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br> x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br>x<br> <!-- --> </div> <footer> footer: fixed height in px </footer> </section>

小提琴:

http://jsfiddle.net/7yLFL/1/(工作，内容不多) http://jsfiddle.net/7yLFL/(破碎，内容较大)

我很幸运，我可以使用最新最好的CSS，而不用考虑传统浏览器。我认为我可以使用flex布局，最终摆脱旧的基于表格的布局。出于某种原因，它没有做我想要的……

为了记录，在SO上有许多关于“填充剩余高度”的相关问题，但没有任何问题可以解决我使用flex时遇到的问题。参考文献:

用一个div填充剩余屏幕空间的高度 填充剩余的垂直空间-只有CSS 当与另一个div共享时，有一个div来填充容器的剩余高度/宽度? 使嵌套div伸展到剩余容器div高度的100% 如何使我的flexbox布局占100%垂直空间? 等

我已经使用jQuery和AJAX工作了几个星期了，我看到了两种不同的方式来“继续”脚本一旦调用已经做出:success:和.done。

从jQuery文档的简介中我们得到:

.done():描述:在解析Deferred对象时添加要调用的处理程序。 success:(.ajax()选项):请求成功时调用的函数。

因此，两者都在AJAX调用完成/解析之后执行一些操作。我可以随意使用其中一种吗?两者的区别是什么?什么时候用一种代替另一种?

我正在使用邮递员Chrome扩展测试一个web服务。

有三种数据输入选项。

我猜raw是用来发送JSON的。

另外两个，form-data和x-www-form-urlencoded之间的区别是什么?

在C语言中，整数(对于32位机器)是32位，范围从-32,768到+32,767。 在Java中，整数(long)也是32位，但范围从- 2147,483,648到+ 2147,483,647。

我不明白Java中的范围是如何不同的，即使位数是相同的。有人能解释一下吗?

关于这一点有很多问题和文章，但据我所知，没有任何结论性的东西。我能找到的最好的总结就是

flex- base允许您在计算任何其他内容之前指定元素的初始/起始大小。它可以是百分比，也可以是绝对值。

.．.它本身并没有说明多少具有弹性基集合的元素的行为。以我目前对flexbox的了解，我不明白为什么它不能描述宽度。

我想知道在实践中弹性基准与宽度的确切区别:

如果我用flex- base替换width(反之亦然)，视觉上会有什么变化? 如果我将两者设置为不同的值会发生什么?如果它们具有相同的值会发生什么? 在某些特殊情况下，使用宽度或弹性基是否会与使用另一种有显著差异? 当与其他flex样式(如flex-wrap、flex-grow和flex-shrink)结合使用时，宽度和弹性基准有何不同? 还有其他显著差异吗?

编辑/澄清:这个问题在《What exactly flex- base属性集?》中以不同的格式提出过。但我觉得更直接地比较或总结弹性基和宽度(或高度)的差异会更好。

I'm an iOS developer with some experience and this question is really interesting to me. I saw a lot of different resources and materials on this topic, but nevertheless I'm still confused. What is the best architecture for an iOS networked application? I mean basic abstract framework, patterns, which will fit every networking application whether it is a small app which only have a few server requests or a complex REST client. Apple recommends to use MVC as a basic architectural approach for all iOS applications, but neither MVC nor the more modern MVVM patterns explain where to put network logic code and how to organize it in general. Do I need to develop something like MVCS(S for Service) and in this Service layer put all API requests and other networking logic, which in perspective may be really complex? After doing some research I found two basic approaches for this. Here it was recommended to create a separate class for every network request to web-service API (like LoginRequest class or PostCommentRequest class and so on) which all inherits from the base request abstract class AbstractBaseRequest and in addition to create some global network manager which encapsulates common networking code and other preferences (it may be AFNetworking customisation or RestKit tuning, if the we have complex object mappings and persistence, or even an own network communication implementation with standard API). But this approach seems an overhead for me. Another approach is to have some singleton API dispatcher or manager class as in the first approach, but not to create classes for every request and instead to encapsulate every request as an instance public method of this manager class like: fetchContacts, loginUser methods, etc. So, what is the best and correct way? Are there other interesting approaches I don't know yet? And should I create another layer for all this networking stuff like Service, or NetworkProvider layer or whatever on top of my MVC architecture, or this layer should be integrated (injected) into existing MVC layers e.g. Model? I know there exists beautiful approaches, or how then such mobile monsters like Facebook client or LinkedIn client deal with exponentially growing complexity of networking logic? I know there are no exact and formal answer to the problem. The goal of this question is to collect the most interesting approaches from experienced iOS developers. The best suggested approach will be marked as accepted and awarded with a reputation bounty, others will be upvoted. It is mostly a theoretical and research question. I want to understand basic, abstract and correct architectural approach for networking applications in iOS. I hope for detailed explanation from experienced developers.

假设我的web服务位于http://localhost:8080/foo/mywebservice, WSDL位于http://localhost:8080/foo/mywebservice?wsdl。

http://localhost:8080/foo/mywebservice是否是端点，即，它是否与我的web服务的URI相同，或者SOAP消息在接收和解组的地方相同?

你能给我解释一下它是什么，它的目的是什么吗?

有什么问题，我认为是一个相对简单的jQuery插件…

插件应该通过ajax从php脚本中获取数据，并将选项添加到<select>。ajax请求非常通用:

$.ajax({
  url: o.url,
  type: 'post',
  contentType: "application/x-www-form-urlencoded",
  data: '{"method":"getStates", "program":"EXPLORE"}',
  success: function (data, status) {
    console.log("Success!!");
    console.log(data);
    console.log(status);
  },
  error: function (xhr, desc, err) {
    console.log(xhr);
    console.log("Desc: " + desc + "\nErr:" + err);
  }
});

这在Safari中似乎工作得很好。在Firefox 3.5中，服务器上的REQUEST_TYPE始终是'OPTIONS'， $_POST数据不会出现。Apache将请求记录为'OPTIONS'类型:

::1 - - [08/Jul/2009:11:43:27 -0500] "OPTIONS sitecodes.php HTTP/1.1" 200 46

为什么这个ajax调用可以在Safari中工作，但不能在Firefox中工作，我如何为Firefox修复它?

Response Headers
Date: Wed, 08 Jul 2009 21:22:17 GMT
Server:Apache/2.0.59 (Unix) PHP/5.2.6 DAV/2
X-Powered-By: PHP/5.2.6
Content-Length  46
Keep-Alive  timeout=15, max=100
Connection  Keep-Alive
Content-Type    text/html

Request Headers
Host    orderform:8888
User-Agent  Mozilla/5.0 (Macintosh; U; Intel Mac OS X 10.5; en-US; rv:1.9.1) Gecko/20090624 Firefox/3.5
Accept  text/html,application/xhtml+xml,application/xml;q=0.9,*/*;q=0.8
Accept-Language en-us,en;q=0.5
Accept-Encoding gzip,deflate
Accept-Charset  ISO-8859-1,utf-8;q=0.7,*;q=0.7
Keep-Alive  300
Connection  keep-alive
Origin  http://ux.inetu.act.org
Access-Control-Request-Method   POST
Access-Control-Request-Headers  x-requested-with

下面是Firebug输出的图片:

我有一个具有两个int属性的对象列表。该列表是另一个linq查询的输出。对象:

public class DimensionPair  
{
    public int Height { get; set; }
    public int Width { get; set; }
}

我想在列表中找到并返回具有最大Height属性值的对象。

我可以设法获得高度值的最大值，但不是对象本身。

我可以用Linq做这个吗?如何?