LADP Overview LDAP (Lightweight Directory Access Protocol) is a protocol for accessing and maintaining distributed directory information services. Directory service is a service for storing and retrieving information. It is usually used to store user information, organizational structure, network equipment and other data within an organization. LDAP is a lightweight protocol designed for lookup and […]
Tag: ring
8. Data structure-string, encoding set
Coding table Chinese coding table ? Mapping of numbers to Chinese single characters. Chinese characters can only use multi-byte 2 bytes, and there are always 65535 states. Common Chinese encodings include GB2312, GBK, GB18030, and BIG 5. ? All encoding tables are compatible with single-byte ASCII tables. UNICODE ? Multi-byte, one encoding table solves the […]
Java–Date string usage
Operation string dates, etc. 1. String concatenation public class Test { public static void main1(String[] args) { String str1 = “hello,”; String str2 = “my name is Tom!”; String str3 = str1 + str2; System.out.println(str3); } //The running results are as follows: // hello, my name is Tom! public static void main2(String[] args) { System.out.println(10 […]
SpringBoot 2 ways to quickly implement sub-database and sub-table
This article is the third article in the series “Principles and Practice of ShardingSphere5. In code> environment, sub-database and table can be quickly realized through JAVA encoding and Yml configuration. 1. What is ShardingSphere? shardingsphere is an open source distributed relational database middleware and is the top-level project of Apache. Its predecessor was two independent […]
C++ optimizes the use of strings
String properties Strings are dynamically allocated Strings are values Strings are copied a lot String optimization Basic optimization Compound assignment operations avoid temporary strings Allocate memory in advance Use constant references to reduce temporary objects generated when passing parameters Eliminate copying of the returned string C-style optimization: use character arrays instead of strings Algorithm optimization: […]
Implementation of string functions
Implementation of string functions One: strlen()—-calculate the string size Write strlen first, because it will be used by several functions later. code show as below: #define _CRT_SECURE_NO_WARNINGS #include<stdio.h> int my_strlen(char* arr) {<!– –> int sum = 0, i = 0; while (*arr != ‘\0’) {<!– –> sum + + ; arr + + ; } […]
C detailed string functions
But on the road ahead, don’t ask about your return date It should be noted that to use the functions mentioned below, you must include the header file Article directory strlen strcpy strncpy strcat strncat strcmp strncmp strstr strtok strerror String case conversion strupr strlwr memcpy memmove memcmp strlen Find the length of a string […]
2.3 Windows driver development: kernel string conversion method
In kernel programming, strings have two formats: ANSI_STRING and UNICODE_STRING. These two formats are safe versions of string structures introduced by Microsoft and are also formats recommended by Microsoft. , usually the type represented by ANSI_STRING is char *, which is a string in multi-byte mode of ANSI, and UNICODE_STRING represents wchar*, which is a […]
Summary of all aspects of getting started with SpringCloud Alibaba components (Part 1): registration center-nacos, load balancing-ribbon, remote calling-feign
Article directory Nacos Ribbon Feign FeignExpansion Nacos Concept: Nacos is a new open source project launched by Alibaba. It is a dynamic service discovery, configuration management and service management platform that makes it easier to build cloud native applications. Nacos is committed to helping users discover, configure and manage microservices. It provides a simple and […]
How to understand and select optimistic locks and pessimistic locks during back-end development?
The author was asked this practical question when participating in a soft opening interview at a bank, so I came here to learn and summarize it. To get straight to the point, when choosing between pessimistic locks and optimistic locks, you need to consider the specific application scenarios: Pessimistic locking is suitable for scenarios where […]