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npm command to uninstall or prune unused packages in Node.js
...ies from a Node.js project (ones that are no longer defined in my package.json .) When I update my application I like to have the unreferenced packages removed automatically.
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Fastest way to duplicate an array in JavaScript - slice vs. 'for' loop
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Easiest way to deep clone Array or Object:
var dup_array = JSON.parse(JSON.stringify(original_array))
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Django Rest Framework File Upload
...e is no straight fwd way you can get it to work. There is an open issue in json api specs for this. One possibility i have seen is to use multipart/related as shown here, but i think its very hard to implement it in drf.
Finally what i had implemented was to send the request as formdata. You would ...
How do I integrate Ajax with Django applications?
...for jQuery, they are great and will put you on the right path.
When to use JSON?. You're going to see a lot of examples where the data sent by the Django views is in JSON. I didn't go into detail on that, because it isn't important how to do it (there are plenty of explanations abound) and a lot mor...
C++特化模板函数的符号多重定义错误问题 - C/C++ - 清泛网 - 专注C/C++及内核技术
... #include 头文件并编译链接工程。但是为了在整个工程中使用该库，我将头文件包含在 stdafx.h 中，结果出现特化模板函数的符号多重定义错误。我要如何组织头文件才能避免多重符号定义错误？我用 /FORCE:MULTIPLE，但我想用一个更...
How do I get a YouTube video thumbnail from the YouTube API?
...youtube/v3/videos?key=YOUR_API_KEY&part=snippet&id=T0Jqdjbed40");
$json = json_decode($data);
var_dump($json->items[0]->snippet->thumbnails);
Output
object(stdClass)#5 (5) {
["default"]=>
object(stdClass)#6 (3) {
["url"]=>
string(46) "https://i.ytimg.com/vi/T0Jq...
How to process POST data in Node.js?
... {
method: 'POST',
headers: {
'Content-Type': 'application/json'
},
body: JSON.stringify({
user: {
name: "John",
email: "john@example.com"
}
})
});
Node.js: (since Express v4.16.0)
// Parse URL-encoded bodies (as sent by HTML for...
实现一个简单的服务端推方案 - 更多技术 - 清泛网 - 专注C/C++及内核技术
...，二来也会让带宽捉襟见肘。
再来说说Long Polling，如果使用传统的LAMP技术去实现的话，大致如下所示：
Long Polling
客户端不会频繁的轮询服务端，而是对服务端发起一个长连接，服务端通过轮询数据库来确定是否有新数据...
剖析程序的内存布局 - C/C++ - 清泛网 - 专注C/C++及内核技术
...件，包括内核本身。因此一部分虚拟地址必须保留给内核使用：
这并不意味着内核使用了那么多的物理内存，仅表示它可支配这么大的地址空间，可根据内核需要，将其映射到物理内存。内核空间在页表中拥有较...
Should “node_modules” folder be included in the git repository
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Modules details are stored in packages.json, that is enough. There's no need to checkin node_modules.
People used to store node_modules in version control to lock dependencies of modules, but with npm shrinkwrap that's not needed anymore.
Another justification f...