[RxJS] Wrap up】的更多相关文章

Last thing to do is clean the score box and input, also auto foucs on input when click start. const starters$ = Observable.merge( start$.mapTo(1000), half$.mapTo(500), quarter$.mapTo(250) ); // Clear the score box input and focus on input starters$.s…
A Promise invokes a function which stores a value that will be passed to a callback. So when you wrap a Promise with an Observable, you'll always get that same value. This enables you to use the behavior as a caching mechanism when the Promises make…
今天,我将Youtube上的<RxJS + Redux + React = Amazing!>翻译(+机译)了下来,以供国内的同学学习,英文听力好的同学可以直接看原版视频: https://www.youtube.com/watch?v=AslncyG8whg 开场白 管理状态很困难,对吧?如果你写过复杂应用,你一定对此深恶痛绝.React社区还有Angular2社区和Ember社区现在都开始使用一个库,叫Redux.为什么?因为它让管理状态变得简单多了.但Redux有个问题,就是它对你写异步…
今天,我将Youtube上的<RxJS + Redux + React = Amazing!>的后半部分翻译(+机译)了下来,以供国内的同学学习,英文听力好的同学可以直接看原版视频: https://www.youtube.com/watch?v=AslncyG8whg Observable 什么是Observable?让我们快速来了解一下它吧! Observable是一个由零个.一个或多个值组成的流.注意,是零个.一个或多个值.零个意味着可以没有值,这完全没问题.一个值的情况就像是Promi…
1.siblings() siblings() 获得匹配集合中每个元素的同胞,通过选择器进行筛选是可选的. <body> <div><span>Hello</span></div> <p class="selected">Hello Again</p> <p>And Again</p> <script> $("p").siblings("…
欢迎指错与讨论 : ) 当前RxJS版本:5.0.0-beta.10.更详细的内容尽在RxJS官网http://reactivex.io/rxjs/manual/overview.html.文章比较长,可以通过快捷键 command+f 或者 ctrl+f 搜索主要内容. - 前言  RxJS在ng2.redux-observable或者前端数据层中扮演一个重要角色,因此笔者想学好RxJS,提前做好准备.本文95%非原创,而是笔者对RxJS官网基础篇的翻译,如有错漏请指出.本文主要内容:简介和六…
原文地址:jQuery中wrap.wrapAll和wrapInner用法以及区别作者:伊少君 原文: <ul>   <li title='苹果'>苹果</li>   <li title='橘子'>橘子</li>   <li title='菠萝'>菠萝</li> </ul>     1.$("li").wrap("<div></div>"); 每一个…
原文地址:http://www.moye.me/2016/05/31/learning_rxjs_part_one_preliminary/ 引子 新手们在异步编程里跌倒时,永远会有这么一个经典问题:怎么在一次异步调用里return一个结果啊? 老司机说要用回调函数,然后有条件判断的嵌套回调(回调地狱)问题来了: 老司机推荐用事件,然后异步流程里有顺序依赖: 老司机推荐用Promise,然后有顺序依赖的流程里,居然还想订阅事件: 老司机建议试试协程,谁知对方想要合并两个异步调用: …… 以上,是…
package main import ( "fmt" "sync" "time" ) type WaitGroupWrapper struct { sync.WaitGroup } func (w *WaitGroupWrapper) Wrap(cb func(argvs ...interface{}), argvs ...interface{}) { w.Add(1) go func() { cb(argvs...) w.Done() }()…
[注]wrap():为每个匹配元素外面添加指定的HTML结构, wrapAll(): 为所有匹配元素(作为一个整体)外面添加一个指定的HTML结构 原文地址:http://www.365mini.com/page/jquery-wrap.htm wrap()函数用于在每个匹配元素外部包裹指定的HTML结构. 与该函数相对的是unwrap()函数,用于当前匹配元素的父元素(只移除父元素,其内部节点全部保留). 该函数属于jQuery对象(实例). 语法 jQueryObject.wrap( wra…
今晚看书的时候发现jQuery有三个包裹节点的方法,百度了一下jQuery wrap() / wrapAll() / wrapInner(),果然搜索结果 W3School的文档说明是排第一的. 可是,W3School的解释是这样的: jQuery 文档操作 - wrap() 方法 wrap() 方法把每个被选元素放置在指定的 HTML 内容或元素中. jQuery 文档操作 - wrapAll() 方法 wrapAll() 在指定的 HTML 内容或元素中放置所有被选的元素. jQuery 文…
刚刚看见了,wrap device && reference device 区别在这里 https://msdn.microsoft.com/en-us/library/windows/desktop/ff476328(v=vs.85).aspx D3D_DRIVER_TYPE_WARP A WARP driver, which is a high-performance software rasterizer. The rasterizer supportsfeature levels …
源起 我们经常需要“修复”一个老生常谈的“bug”,那就是文本的自动换行问题.在专业术语上,这种期望得到的渲染现象被称作“word wrap”,即文本处理器有能力把超出页边的整个词自动传到下一行. 在现实项目中,尤其是在测试阶段,鉴于测试使用非常极端的测试用例,我们经常需要“修复”如图所示的这个问题: 长单词溢出 图中,极长的这个英文单词(虽然是生造的)为了保证完整的显示,无奈地超出了容器的限制,它溢出了.为了“修复”这个“问题”,使得无论东亚还是西欧文字都能被限定在容器的尺寸范围内,我们一般会…
Angular 2 forms provide RxJS streams for you to work with the data and validity as it flows out of the forms. These streams allow you handle complex scenarios and asynchronous scenarios with relative ease. This example shows you how to log out the va…
Marble testing is an expressive way to test observables by utilizing marble diagrams. This lesson will walk you through the syntax and features, preparing you to start writing marble tests today! Grep two files from the rxjs https://github.com/Reacti…
1.StackPanel面板 using System; using System.Windows; using System.Windows.Input; using System.Windows.Media; using System.Windows.Controls; namespace LY.StactTheButtons { public class StackTheButton:Window { [STAThread] public static void Main() { new…
Sometime, we migth just want to return a object which wrap into Observable. You can use 'just' or  'return'. ); var subscription = source.subscribe( function (x) { console.log('Next: ' + x); }, function (err) { console.log('Error: ' + err); }, functi…
今天在做 wrap 的测试实验的时候,出现一个很奇怪的现象,就是加密不成功.具体表现为:1.加密后的文件大小为0kb. 2.加密后的文件仍然可视. 具体测试步骤如下: D:\Just4work\someSQLs>wrap iname=test_oracle_warp.sql PL :: Copyright (c) , , Oracle. All rights reserved. Processing test_oracle_warp.sql to test_oracle_warp.plb D:\…
Capturing every event can get chatty. Batching events with a throttled buffer in RxJS lets you capture all of those events and use them responsibly without overloading a subscriber downstream. var Observable = Rx.Observable; var button = document.get…
Armed with the map and concatAll functions, we can create fairly complex interactions in a simple way. We will use Observable to create a simple drag and drop example with basic DOM elements. <!DOCTYPE html> <html> <head lang="en"…
In this lesson we will get introduced to the Observable type. An Observable is a collection that arrives over time. Observables can be used to model events, asynchronous requests, and animations. Observables can also be transformed, combined, and con…
Libraries such as RxJS use generics heavily in their definition files to describe how types flow through different interfaces and function calls. We can provide our own type information when we create Observables to enable all of the auto-complete &…
Most of the common RxJS operators are about transformation, combination or filtering, but this lesson is about a new category, error handling operators, and its most important operator: catch(). Basic catch( err => Observable): var foo = Rx.Observabl…
We will learn how to perform network requests to a backend using RxJS Observables. A example of basic jquery request: console.clear(); var requestStream = Rx.Observable.just('https://api.github.com/users'); //Current requestStream is just a stream //…
When you implement a search bar, the user can make several different queries in a row. With a Promise based implementation, the displayed result would be what the longest promise returns. This is the problem which we want to solve. <!DOCTYPE html> &…
What is the RxJS equivalent of Array reduce? What if I want to emit my reduced or aggregated value at each event? This brief tutorial covers Observable operators reduce() and scan(), their differences and gotchas. In ES5, the Array's reduce function…
Higher order Array functions such as filter, map and reduce are great for functional programming, but they can incur performance problems. var ary = [1,2,3,4,5,6]; var res = ary.filter(function(x, i, arr){ console.log("filter: " + x); console.lo…
首先当然要夸一下神器 Sublime Text 2,自从第一次用我就彻底把神马 Notepad++ 和 TextMate 打入冷宫,用来开发 WEB 项目从此 IDE 都不需要了! 下面讲讲如何自动开启换行功能,当一行代码太长时,Sublime Text 2 默认并不会自动开启换行,你必须从 View->Word Wrap 开启,虽然只有一步但是能从简就从简. 解决方法是: 打开 Preferences -> Setting - User 添加如下内容即可: { "word_wrap…
RxJS 博大精深,看了好几篇文章都没有明白. 范围牵扯到了函数响应式开发去了... 我对函数式一知半解, 响应式更是第一次听到... 唉...不过日子还是得过...混着过先呗 我目前所理解的很浅, 大致上是这样的概念. 1.某些场景下它比promise好用, 它善于过滤掉不关心的东西. 2.它是观察者模式 + 迭代器模式组成的 3.跟时间,事件, 变量有密切关系 4.世界上有一种东西叫 "流" stream, 一个流能表示了一段时间里,一样东西发生的变化. 比如有一个值, 它在某段时…
The scan operator in RxJS is the main key to managing values and states in your stream. Scan behaves just as a reduce function would, but scan is able to collect values from streams over time. This lesson covers using startWith to set the initial acc…