Project.updateOne(r, { $pull: { thunder2: { files: { _id: "5ab362d446f15936bcea7dd3" } } } }, function(err, data) { if (err) { res.send("") } else { ...
an element in an array is iterated with a specified number such as . cycle wifimac and wanmac by 4 ...
the code is as follows: package com.obj; import java.util.ArrayList; import java.util.List; public class MyList { private List list = new ArrayList(); public void add(){ list.add(""); } public int size(){ ...
Environment: Mongodb 3.6.3 mongoose: 5.2.5 nodeJS: 8.x description: simulate the blog system. There are two collection (articles comments), schema as follows Query for comment Params: { offset limit sortBy } exports.getComment...
Rust is a novice rookie. I began to learn this young language just a few days ago, and I have been learning it for almost half a week. I have to say that there are many things I don t quite understand about the syntax of Rust, and the threshold for en...
import React from react ; import PropTypes from prop-types ; < Pt name= {1} > export default class Pt extends React.Component { static propTypes = { type: PropTypes.string }; render () { return ( <h1> { this.props.name } < ...