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Perform debounce in React.js

...'s returned promise will resolve a single this.setState({ result }); will happen per API call Eventually, you may add another trick if your component unmounts: componentWillUnmount() { this.setState = () => {}; } Note that Observables (RxJS) can also be a great fit for debouncing inputs, b...
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Why do people say that Ruby is slow? [closed]

... Ruby to be slow but then again, I'm just using it to make simple CRUD apps and company blogs. What sort of projects would I need to be doing before I find Ruby becoming slow? Or is this slowness just something that affects all programming languages? Ruby probably wouldn't serve you ...
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扩展App Inventor:具有多点触控和手势检测功能 · App Inventor 2 中文网

创建 Apps 首页 关于我们 关于我们 发布日志 服务条款 教育 中文教程 中文社区 反馈 我要反馈 var _hmt = _hmt || []; (function() ...
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What APIs are used to draw over other apps (like Facebook's Chat Heads)?

... This one: Allows an application to open windows using the type TYPE_SYSTEM_ALERT, shown on top of all other applications. Very few applications should use this permission; these windows are intended for system-level interaction with the u...
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Android ViewPager - Show preview of page on left and right

...dView xmlns:android="http://schemas.android.com/apk/res/android" xmlns:app="http://schemas.android.com/apk/res-auto" android:layout_width="match_parent" android:layout_height="match_parent" <-- this! app:cardCornerRadius="8dp" app:cardUseCompatPadding="true"> <andro...
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How to write log to file

...r me: f, err := os.OpenFile("testlogfile", os.O_RDWR | os.O_CREATE | os.O_APPEND, 0666) if err != nil { log.Fatalf("error opening file: %v", err) } defer f.Close() log.SetOutput(f) log.Println("This is a test log entry") Based on the Go docs, os.Open() can't work for log.SetOutput, because i...
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When is TCP option SO_LINGER (0) required?

... I totally agree. I have seen a monitoring application which was initiating many (a few thousands short lived connections every X seconds), and it had probem to scale bigger (a thousand connection more). I don't know why, but the applicatoin was non responsive. Someon...
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Pagination in a REST web application

...ept of page changes with the context; one user of your API may be a mobile app, that can consume only 2 products per page, while the other is a machine app that can consume the whole damn list. In short, page is a "representation" of the underlying domain entity (product) and should not be included ...
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Why Choose Struct Over Class?

...ying is way safer than having multiple references to the same instance as happens with classes. This is especially important when passing around a variable to many classes and/or in a multithreaded environment. If you can always send a copy of your variable to other places, you never have to worry a...
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MFC AfxMessageBox改变标题的几种方法 - C/C++ - 清泛网 - 专注C/C++及内核技术

MFC AfxMessageBox改变标题的几种方法1、资源文件AFX_IDS_APP_TITLE:其实这个标题,也就是我们的默认的工程名,我们应该怎么在不改变工程名的基础上改变标题呢?其实这个标题在...1、资源文件AFX_IDS_APP_TITLE(推荐): AfxMessageBox的...