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Fastest way to duplicate an array in JavaScript - slice vs. 'for' loop
...
Easiest way to deep clone Array or Object:
var dup_array = JSON.parse(JSON.stringify(original_array))
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App Inventor 2 试验组件 · App Inventor 2 中文网
...应用程序非常有用。
注意：
追加值 和 删除第一项 在离线时无法正常工作，它们需要网络连接。
如果你在任何 Firebase 组件、任何屏幕上设置 持久化， 它使所有屏幕上的所有 Firebase 组件保...
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...
iOS开发过程中的各种tips - 更多技术 - 清泛网 - 专注C/C++及内核技术
...ct rect2#>)//判断两巨星是否交叉，是否重叠
CGRectZero//高度和宽度为零的，位于（0，0）的矩形常量
3.隐藏状态栏
[UIApplication sharedApplication] setStatusBarHidden:<#(BOOL)#> withAnimation:<#(UIStatusBarAnimation)#>//隐藏状态栏
4.自动适应父视图大...
关于php的socket初探 - PHP - 清泛IT论坛，有思想、有深度
...hp是专为web而生，做wep app是一流的快速好用，并极易简单和容易上手，做起web所需的各项功能可能是分分钟搞定，然后做socket了？可能就觉得不屑一顾了，好像是不务正业，用了自己的短板去做不擅长的事情。其实不然，往往越...
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...
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...
Understanding Node.js modules: multiple requires return the same object?
...and modify and use only the clone, like this:
var a = require('./a');
a = JSON.parse(JSON.stringify(a));
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