随笔分类 - Compose
摘要：在转换AST节点的过程中，往往需要根据其子节点的情况来决定如何对当前节点进行转换，这就要求父节点的转换操作必须等待其所有子节点全部转换完毕之后再执行。 但是我们现在设计的转换流程并不支持这个能力，我们是从根节点开始，顺序往下执行的流程，如下图： 当一个节点被处理时，意味着它的子节点已经被处理完毕了，
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摘要：For example, we have following code doing AST transform from templateAST to Javascript AST function traverseNode(ast) { const currentNode = ast; // If
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摘要：const template = "<p>Vue</p>"; const State = { initial: 1, // init state tagOpen: 2, tagName: 3, text: 4, tagEnd: 5, tagEndName: 6, }; function isAlph
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摘要：function observe(obj) { for (const key in obj) { let internalValue = obj[key]; const funs = new Set() Object.defineProperty(obj, key, { configurable:
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摘要：https://www.npmjs.com/package/ses Lockdown The lockdown() function also tames some objects including regular expressions, locale methods, and errors.
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摘要：Concurrency + Channel (CSP): Concurrency is a way to run operation in isolated thread, a way to better utilize the CPU resources and handle multi simu
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摘要：function getData(d) { setTimeout(() => { if (typeof d "number") { run.next(d/2) } else { run.next(d) } }, 500) } function* gen() { var x = 1 + (yield
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摘要：Thunks Sync thunk: A blocker of code which has everything ready and can return the value directly. function add(x, y) { return x + y } const thunk = f
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摘要：An example of callback implemnetation for handling async flow: function fakeAjax(url, cb) { var fake_responses = { file1: "The first text", file2: "Th
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摘要：1. Basic version of signals We have a basic version of signal: const stack = [] export function createSignal(value) { const subscribers = new Set(); c
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摘要：Implement two functions of Signals createSignal: return a tuple with read function and wrtie function createEffect: accept a function which will be ex
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摘要：PubSub is one of the most foundational patterns for reactivity. Firing an event out with publish() allows anyone to listen to that event subscribe() a
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摘要：Requirements: function strBuilder(str) { return strBuilder; // TODO } var hello = strBuilder("Hello, "); var kyle = hello("Kyle"); var susan = hello("
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摘要：function f(...args) { return args; } function flip(fn) { return function flipped (arg1, arg2, ...args) { return fn(arg2, arg1, ...args) } } let z = fl
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摘要：New broadcaster: compose: export let combine = (broadcaster1, broadcaster2) => listener => { let value1; let value2; let cancel1 = broadcaster1(value
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摘要：To build out our word game, we will have to be able to share the word across a few places. This means we have to set up a broadcaster that will push t
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[Javascript] Broadcaster + Operator + Listener pattern -- 25. Save Network Requests by Using a Cache
摘要：Caches exist to make things faster (at the expense of taking up more memory and possibly outdated results). Our live search is a great use case for im
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摘要：In previous post, we check how to use ifElse to branch out the logic: https://www.cnblogs.com/Answer1215/p/14093562.html let inputToBooks = pipe( wait
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摘要：So far, we've used filter to prevent values when a condition is met. Sometimes you want two different behaviors based on a condition which is where yo
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摘要：export let mapError = transform => broadcaster => listener => { return broadcaster((value) => { if (value instanceof Error) { listener(transform(value
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