1. Introduction to map In C++, both std::map and multimap are associative containers, and both are included in the header file #include < In map>, its underlying structure is implemented with binary tree. All elements in map are pair, and the first element in pair is key-value(key ), which acts as an index; the second […]
Tag: key-value
Part 1: Use the key-value pairs in ConfigMap as the environment variables of the container
Written at the beginning Continuing from the previous article, “Understanding ConfigMap of K8S in one article”. As discussed in the previous article, the official document mentioned that you can use the following four methods to configure containers in Pods using ConfigMap: Container environment variables: The key-value pairs in ConfigMap can be used as container environment […]
Quick Guide: Install Redis on CentOS 7 to Build a High-Performance Key-Value Store Database
Navigation directory 1. Install and use Redis 1.1. Download the installation package 1.2. Rename and move files 1.3, redis compilation and installation 1.4, redis start 1.5. Set the background to start redis 1.6. Set redis password 1.7, set redis service remote access 1.8. Client connection test of redis service 1.9. Using the command line 1.10, […]
[Map: a collection of multiple key-value pairs]
Article directory Map: a collection of multiple key-value pairs 1. Overall architecture process 2.Map 2.1 Common methods 2.2 Traversal method: 3.TreeMap 3.1 New method 3.2 Sorting 3.2.1. Internal Comparator 3.2.2 External Comparator 4. HashMap 4.1 Common methods are the same as Map 5. Hashtable 5.1 Differences from HashMap: 6.Properties: Map: a collection of multiple key-value […]
EasyPoi exports multi-sheet, multi-level complex headers using the key-value pair format
Description of problem: I just sent a task and said that I want to export, and the export is required to be multi-sheet and complex headers. The most commonly used method of easyPoi is MVC export. There is also a key-value pair method in the official document (http://easypoi.mydoc.io /#category_50222) to find key clues Analysis `According […]
01 | Basic Architecture: What does a key-value database contain?
Redis itself is relatively complicated. If we directly study specific technical points, such as “single thread” and “caching”, although we can directly learn the specific content and even solve some small problems immediately, but learning in this way , it is easy to get lost in the minutiae. From my own experience, a better way […]
c# collection_key-value pair Dictionary & SortedList
Foreword: In C#, key-value pairs are a common data structure that can be implemented using different collection classes. The following are commonly used key-value pair collection classes: Dictionary: A collection of key-value pairs implemented using a hash table. It works by hashing the key into a bucket number, then storing the value in the bucket […]
According to the key-value relationship, get the string from the file
#include <stdio.h> #include <string.h> #include <stdbool.h> #include <stdlib.h> #define true 1 #define false 0 #define INI_MAX_LINE 512 typedef enum _StatusRet{<!– –> ERR_NON = 0, ERR_MEM, ERR_FILE, ERR_INI, ERR_NON_EXIST, }StatusRet; enum STATE{<!– –> STATE_IDLE, STATE_COMMEMT, STATE_SECT, STATE_KEY, STATE_VALUE, }; static void StrRemoveBoundSpace(char *str) {<!– –> int i; char *ps = str; int len = strlen(str); if […]
C# implements key-value structure custom cache CustomCache
Functional requirements Use C# to write a key-value structure in-process cache to realize the basic operation of data cache. The knowledge points used here are as follows: Thread-safe dictionary ConcurrentDictionary; Singleton mode of design mode (Singleton); Cache data [active & amp; passive] expiration mode; cache key-value cache implementation Description: Create a console project based on […]
[Solved] JSON.parse method parses pure numeric key-value pair error solution
Problem: js parsing the json format reports an error, the reason is that the keys in the general json format are all strings, but the json format to be parsed, the key value is a pure number. The error is as follows: uncaught SyntaxError: Unexpected number in JSON at position 45 Reason: After investigation, it […]