example: get the properties of an object in an array of objects according to id const stage = [ { id: 0, name: a }, { id: 1, name: b }, { id: 2, name: c }, { id: 3, name: d }, { id: 4, name: e ...
topic description lambda groupingBy Advanced questions List < A > how to convert to List < B > sources of topics and their own ideas looked up a lot of materials and found that most of the Internet teaches how to convert List into Map < String,Li...
how to understand the code well in the case of cascading high-order functions with multiple arrow functions in es6 const setTitle = (title) => (WrappedComponent) => { return class extends React.Component { componentDidMount() { ...
curry = fn => { let arr = []; judge = (...args)=>{ if(!args[args.length-1]){ return fn(arr); }else{ arr.push(...args); re...
recently read functional programming Guide I can t understand the part of the container. There is a code that says Functor as follows: class Maybe { static of(x) { console.log(1); return new Maybe(x); } get isNothing() { console...
browser error ReferenceError: React is not defined login.js import React from react ; import { render } from "react-dom"; render( <h1>test< h1>, document.getElementById( root ) ); webpack.config.js ...
github: https: github.com indutny ha. how to use hash.js: var hash = require( hash.js ) hash.sha256().update( abc ).digest( hex ) question: what does update ( abc ) and digest ( hex ) mean respectively? ...
does WeChat Mini Programs have a method similar to vue s v-html to render a piece of content containing tags now the demand is: I have made a chat Mini Program, I want to identify the link in the chat message, put a tag on it and add a special colo...
I have no problem passing a single data to the subcomponent, but the object is wrong subcomponent: <template> <div class="nowinfo" > <div class="nowinfo-header">< div> <div class="nowinfo-c...
how to use python to copy a piece of excel content and insert it into a page of a word file and save it as a picture? what libraries do I need to use? ...