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How do you turn a Mongoose document into a plain object?
I have a document from a mongoose find that I want to extend before JSON encoding and sending out as a response. If I try adding properties to the doc it is ignored. The properties don't appear in Object.getOwnPropertyNames(doc) making a normal extend not possible. The strange thing is that JSON....
由12306.cn谈谈网站性能技术 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...种常用的方法，我在下面列举一下，我相信12306这个网站使用下面的这些技术会让其性能有质的飞跃。
一、前端负载均衡
通过DNS的负载均衡器（一般在路由器上根据路由的负载重定向）可以把用户的访问均匀地分散在多个Web服...
Get user info via Google API
...t the information from - https://www.googleapis.com/oauth2/v1/userinfo?alt=json
It has loads of stuff - including name, public profile url, gender, photo etc.
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海量数据相似度计算之simhash和海明距离 - 大数据 & AI - 清泛网 - 专注C/C++及内核技术
...看起来很简单，我们来做个测试，就拿最简单的两个数据使用Apache提供的 Levenshtein for 循环100w次计算这两个数据的相似度。代码结果如下：
String s1 = "你妈妈喊你回家吃饭哦，回家罗回家罗" ;
String s2 = "你妈妈叫你回家吃饭啦...
What is Rack middleware?
... any of them will do. Let's create a simple web application that returns a JSON string. For this we'll create a file called config.ru. The config.ru will automatically be called by the rack gem's command rackup which will simply run the contents of the config.ru in a rack-compliant webserver. So let...
Getting visitors country from their IP
..._VALIDATE_IP) && in_array($purpose, $support)) {
$ipdat = @json_decode(file_get_contents("http://www.geoplugin.net/json.gp?ip=" . $ip));
if (@strlen(trim($ipdat->geoplugin_countryCode)) == 2) {
switch ($purpose) {
case "location":
...
appending array to FormData and send via AJAX
...
You have several options:
Convert it to a JSON string, then parse it in PHP (recommended)
JS
var json_arr = JSON.stringify(arr);
PHP
$arr = json_decode($_POST['arr']);
Or use @Curios's method
Sending an array via FormData.
Not recommended: Serialize the data with...
jQuery pass more parameters into callback
...sh to pass.
$.post("someurl.php", someData, doSomething(extraStuff), "json");
};
What is happening?
In the last line, doSomething(extraStuff) is invoked and the result of that invocation is a function pointer.
Because extraStuff is passed as an argument to doSomething it is within scope of ...
深入浅出计算机字符集编码 - C/C++ - 清泛网 - 专注C/C++及内核技术
...。中文操作系统则完全不同，要表示日文半角片假名必须使用日文的编码方式（EUC_JP或shift-jis）。
当以上代码在非shift-jis环境（中文Windows，英文Linux等）下运行时，结果如下（若拷贝到shift-jis环境下又恢复正常，可见背后真...
Socket 错误返回码详解 - C/C++ - 清泛网 - 专注C/C++及内核技术
...個不具有開啟權限的檔案或socket。例如在UNIX上，一般的使用者不能開啟 SOCK_RAW的socket，通常是超級使用者(super user)才有此權限。如果一般的使用者企圖開啟SOCK_RAW的socket，將會得到這個錯誤訊息。
對於WinSock API函式介面，發生...