When developing the Winform program interface, we often use some better-looking charts to add color to the program interface. Good icon settings can make the interface look more beautiful and comfortable, and it is also easier to understand. Icons We can obtain resources for various scenarios through some websites, but this article mainly introduces how […]
Tag: express
Python Regular Expressions (RegEx) Guide
A regular expression (RegEx) is a sequence of characters that forms a search pattern. RegEx can be used to check whether a string contains a specified search pattern. RegEx module There is a built-in package in Python called re that can be used to process regular expressions. Import the re module: import re RegEx in […]
Express framework development interface front-end classification navigation
1.Initialization const handleDB = require(‘../handleDB/index’) // Get all navigation exports.allNav =async (req, res) => { } //Update or add navigation exports.upNav =async (req, res) => { } //Delete based on id exports.delNav = async(req, res) => { } 2. Database design aynsc turns the function into an asynchronous function and uses it with await, using […]
Express framework development interface today’s recommended modules
1.Initialization It still needs to be optimized later, such as how many pieces of data are displayed in each module, guess you like paging, etc. const handleDB = require(‘../handleDB/index’) // Get all modules exports.allModule = async(req, res) => { } //Update or add modules exports.upModule = async(req, res) => { } //Delete module based on […]
Regular Expression
1. Grammar Regular expressions are a powerful tool for matching and manipulating text. They can find, replace, extract, and validate specific patterns in text. Regular expressions are literal patterns composed of ordinary characters (such as the character a ) and special characters (called “metacharacters”). A pattern describes one or more strings to match when searching […]
Lambda lambda expression algorithm problem immortal rabbit monkey eating peach climbing stairs
Directory Lambda lambda expression standard format Summarize Lambda advanced omission writing method practise Algorithm questions Immortal Rabbit Monkey eats peach Climb stairs Lambda The most intuitive effect is to simplify the writing of anonymous inner classes as above public static void main(String[] args) {<!– –> Integer arr[]={<!– –>2,1,4,6,3,5,8,7,9}; Arrays.sort(arr, (Integer o1, Integer o2)-> {<!– –> […]
JAVA lambda expression weird tricks
lamda expression Setting operations of traditional code space package org.example.lambda; public class theFirstLambda {<!– –> public static void main(String[] args) {<!– –> //This is the basic understanding of implementing anonymous inner class operations //Anonymous inner classes are generally used to implement method operations defined by the interface Thread thread=new Thread(new Runnable() {<!– –> @Override public […]
Express framework development interface to implement paging function
1. What is it? When we do data query, if the amount of data is large, such as tens of thousands of data, it is obviously unfriendly to display it on one page. At this time, we need to use paging display, for example, only 10 pieces of data are displayed at a time. To […]
PTA-Finding the value of a prefix expression (C language) (two methods) (detailed comments)
Arithmetic expressions come in the form of prefix notation, infix notation, and postfix notation. Prefix expression means that the binary operator is placed before the two operands. For example, the prefix expression of 2 + 3*(7-4) + 8/4 is: + + 2 * 3 – 7 4 / 8 4. Please design a program to […]
Lambda expressions in C++11
Lambda comes from the concept of functional programming. C++11 finally adds lambda this time. Lambda expressions have the following advantages: 1. Declarative programming style: define the target function or function object anonymously in place, without writing an additional named function or function object. Write programs in a more direct way, with good readability and maintainability. […]