The energy of ant forest is often stolen? Let me cure it. Take back the lost energy in the ant forest.
1 Introduction to ant forest Ant forest is a public welfare project aimed at promoting the public's low-carbon emission reduction. Everyone's low-carbon behavior can be counted as "green energy" in ant forest. When the "green energy" accumulates to a certain extent, you can use your mobile phonUTF-8...
Posted by cheechm on Thu, 10 Mar 2022 10:51:29 +0530
DOM node operation
DOM node operation 1. Why learn node operations? ------ main reason: get element (1) There are usually two ways to get elements The first way: use the method provided by DOM to obtain elements document.getElementById(); document.getElementsByTagName(); document.getElementsByName(); document.queUTF-8...
Posted by Skoalbasher on Fri, 11 Mar 2022 19:14:54 +0530
MySQL query (data filtering, internal connection, external connection, natural connection, cross connection and joint query)
Basic query filtering: it can be used to query all field data or specify one or more fields SELECT * FROM USER;#Query all field data SELECT NAME,sex,age FROM USER;#Query one or more field data Conditional query filtering And, or, IN, NOT IN, BETWEEN AND Fuzzy query filtering SELECT * FROM USERUTF-8...
Posted by excessnet on Tue, 15 Mar 2022 23:27:52 +0530
The use of Lambda expression and its difference from anonymous inner class
Lambda expression 1. Standard format for lambda expressions 2. Practice of lambda expression 3. Ellipsis mode of lambda expression 4. Precautions for lambda expressions 5. The difference between lambda expressions and anonymous expressions 1. Standard format of lambda expression Lambda expressiUTF-8...
Posted by telefiend on Thu, 17 Mar 2022 15:53:10 +0530
Two way lead cycle linked list (the most "perfect" linked list)
catalogue Types of linked lists "Two way" "Take the lead" "Loop" 1. Increase 1.1 head increase 1.2 tail increase 1.3 pos increase (increase in front of any position) 2. Delete 2.1 deletion 2.2 header deletion 2.3pos delete 3. Check and correct 3.1 check 3.2 modification Types of linked lists (1UTF-8...
Posted by textbox on Fri, 18 Mar 2022 06:44:25 +0530
Third job - process management
exec function family The subprocess created with fork() function contains the same program code, and can only execute different code branches according to the return value of fork() function. By the function in the exec function family, you can find the executable file according to the specifieUTF-8...
Posted by KI114 on Thu, 12 May 2022 23:41:05 +0530
Detailed explanation of Sanzi chess
catalogue 1, Game anatomy 1. Game introduction 2. Game realization ideas 2, Code implementation 1, Game anatomy 1. Game introduction Sanzi chess is also called Jingzi chess. If the three pieces are connected into a line horizontally or vertically, they will win 2. Game realization ideas 1: we UTF-8...
Posted by 2oMst on Mon, 16 May 2022 22:19:57 +0530
Inherited virtual function
• Two different class objects cannot be assigned to each other, but two have Public inheritance The object of is assignable. The object of the descendant class is assigned to the object of the ancestor class , but Otherwise, it does not hold . At this time, the assigned base class object can oUTF-8...
Posted by pbarney on Wed, 18 May 2022 04:03:02 +0530
C + + Programming Course Design (postgraduate preliminary examination admission system)
1, Experimental content Title and content of experimental design There are 4 postgraduate examination courses, of which mathematics, foreign language and politics are unified propositions, while the professional basic courses are set by the enrollment school according to different majors. The sUTF-8...
Posted by q1234ask on Sun, 22 May 2022 07:28:55 +0530
The 18th Java job
Use enumeration type 1, Preface: Recall the singleton design pattern. A singleton class has only one instance of a class, so a multi instance class is a class with multiple instances, but not an infinite number of instances, but a limited number of instances. This can be an enumeration class. EUTF-8...
Posted by anon_login_001 on Wed, 25 May 2022 08:39:37 +0530