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...
I bought a server to do database. now we are working on an acquisition system, which has frequent write operations, resulting in slow simple queries. I wonder if it is useful to use mycat to read and write on a stand-alone computer. write library ...
problem description purpose, dynamically set line-height according to div height the environmental background of the problems and what methods you have tried use line-height to center the text vertically, but the div height changes dynamically r...
Why can node send http requests as a server? What other requests can node send besides http requests? Xiaobai, solve the underlying principle ...
markup.enterEditMode (); after ToolBar is gone leaveEditMode (); ToolBar also does not appear excuse me, what s going on? ...
Icon shows the red part. Choose how to write the effect in css ....