大约有 7,000 项符合查询结果（耗时：0.0545秒） [XML]
What's the $unwind operator in MongoDB?
...e "tags".
The end result of $project + $unwind:
Translate the output to JSON:
{ "author": "bob", "title": "this is my title", "tags": "fun"},
{ "author": "bob", "title": "this is my title", "tags": "good"},
{ "author": "bob", "title": "this is my title", "tags": "fun"}
Because we didn't tell M...
Socket 错误返回码详解 - C/C++ - 清泛网 - 专注C/C++及内核技术
...個檔。
WSANO_DATA (11004) 名稱合法，但查無此資料
查詢格式是正確的，但是查無此資料存在。這通常是暫時性的錯誤，可能在不同的網路資料伺服器中能找到這份資料。
WSAPROVIDERFAILEDINIT (OS dependent) Unable to initialize a service pro...
Very simple log4j2 XML configuration file using Console and File appender
...on system (which IMHO is more a distraction than a help), you can even use JSON. See https://logging.apache.org/log4j/2.x/manual/configuration.html for a reference.
Personally, I just recently started using log4j2, but I'm tending toward the "strict XML" configuration (that is, using attributes in...
一个故事告诉你比特币的原理及运作机制 - 创意 - 清泛网 - 专注C/C++及内核技术
...家走上了台，告诉大家他已经设计了一套不依赖任何中央处理人的叫比特币的虚拟货币系统，可以解决上述问题。然后他缓缓讲述了自己的方案。
下面我们就来看看中本聪同学是如何设计这套系统的。
基础设施搭建
账簿公开...
How can I properly handle 404 in ASP.NET MVC?
... is it possible to return only a status 404 when youre working in JSON within the same project?
– VinnyG
Aug 18 '11 at 0:06
6
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How to upload files to server using JSP/Servlet?
...this is rather trivial (i.e. instead of forwarding to JSP, just print some JSON or XML or even plain text depending on whatever the script responsible for the Ajax call is expecting).
How to upload files to server using JSP/Servlet and Ajax?
Send a file as multipart through xmlHttpRequest
HTML5 Fi...
Is recursion ever faster than looping?
... at one now: parts of the DOM supporting what you are reading are a RDS, a JSON expression is a RDS, the hierarchical file system in your computer is a RDS, i.e: you have a root directory, containing files and directories, every directory containing files and directories, every one of those director...
How to elegantly deal with timezones
... you don't have to change your view model to accommodate the change. Your JsonResult would simply contain a model with the IEnumerable<T> and the offset.
On the input side, using a model binder? I'd say absolutely no way. You can't guarantee that all the dates (now or in the future) will h...
OAuth 2.0: Benefits and use cases — why?
... Connect, compatible with OAuth2.
The OpenID Connect ID Token is a signed JSON Web Token (JWT) that is given to the client application along side the regular OAuth access token.
The ID Token contains a set of claims about the authentication session, including an identifier for the user (sub), the i...
What is the difference D3 datum vs. data?
...
I found the correct answer here from Mike himself:
D3 - how to deal with JSON data structures?
If you want to bind your data to a single SVG element, use
(...).data([data])
or
(...).datum(data)
If you want to bind your data to multiple SVG elements
(...).data(data).enter().append("svg")
...