[C language] ☀ ⅸ comprehensive summary (detailed explanation + code demonstration + illustration + classic cases)
catalogue 1, What is an array? 2, Creation and initialization of one-dimensional array Creation of one-dimensional array Creation method initialization Incomplete initialization Full initialization Omit initialization of array length Error demonstration Initialization of character array 3, UUTF-8...
Posted by Griven on Tue, 21 Sep 2021 06:50:03 +0530
Rust Programming Guide - collection and error handling
aggregate Vector Similar to vector in C + + Create vector let v:i32 = Vec::new(); v.push(1); let v = vec![1,2,3,4]; Indexes Subscript or match fn main(){ let v= vec![1,2,3,4,5,6]; // let third:&i32 = &v[2]; // println!("the third number is {}",third); match v.get(2){ Some(third) => println!("thUTF-8...
Posted by moty66 on Fri, 24 Sep 2021 13:22:33 +0530
Factory methods and abstract factory patterns
1, Factory method Factory method definition: define an interface for creating objects, and let subclasses decide which class to instantiate. Factory methods delay the instantiation of a class to its subclasses. 1. Structure diagram of factory method mode: The factory method abstracts a factoryUTF-8...
Posted by enygma on Fri, 24 Sep 2021 17:53:58 +0530
Java multithreading: the principle of JUC concurrency tool
1, Foreword This is the last part of the multithreading one-stage plan. Subsequent multithreading will turn to the revision and in-depth stage. I have a thorough understanding of multithreading 2, Tool introduction These categories have been mentioned before when talking about AQS. These categoUTF-8...
Posted by mzshah on Tue, 28 Sep 2021 13:38:11 +0530
Zero basic Java self-study process - understanding basic Java syntax 27
Passing parameters during a Java method call How to pass parameters when calling a method? When called, the parameter is passed to the method, which is the assignment process. The parameter passing is exactly the same as the "assignment rule", except that the "=" operator is not visible in the UTF-8...
Posted by roach on Sat, 09 Oct 2021 05:17:10 +0530
Such a big MySQL bug opened my eyes
A sentry alarm was received this week. The following SQL query timed out. select * from order_info where uid = 5837661 order by id asc limit 1 Execute show create table order_info found that this table is actually indexed CREATE TABLE `order_info` ( `id` bigint(20) unsigned NOT NULL AUTO_INCREMUTF-8...
Posted by errorCode30 on Thu, 21 Oct 2021 10:33:07 +0530
It smells good! SpringBoot quickly integrates the monitoring service of SpringBootAdmin console
SpringBootAdmin is a monitoring tool for UI beautifying and encapsulating the actor interface of Spring Boot. It can browse the basic information, detailed Health information, memory information, JVM information, garbage collection information, various configuration information (such as data soUTF-8...
Posted by dmIllithid on Fri, 22 Oct 2021 10:54:42 +0530
C language project source code 2021 latest!
1, C language source code C language is a general computer programming language, which is widely used in Bottom development. The design goal of C language is to provide a programming language that can compile and process low-level memory in a simple way, generate a small amount of machine code UTF-8...
Posted by ds111 on Sat, 23 Oct 2021 05:29:51 +0530
School Online - Fundamentals of programming - Chapter 6
Chapter 6 recurrence and dynamic programming 6.1 rabbit sequence problem set the recursive initial value first; Then recursion is carried out according to the formula (commonly realized by loop). code implementation //Fibonacci sequence #include using namespace std; int main() { intUTF-8...
Posted by journy101 on Sun, 24 Oct 2021 15:02:21 +0530
[learning notes of algorithm competition] number theory - Mathematics promotion plan
title: number theory notes (III) date : 2021-8-12 tags: number theory, ACM Fast multiplication Turtle speed ride In fact, fast multiplication is to prevent overflow and do not want to write high-precision, so we imitate binary addition to complete the modular product of two numbers. Complexity UTF-8...
Posted by WendyB on Sun, 31 Oct 2021 09:07:25 +0530