Article directory 1. Introductory statement 1.1 Classification of sentences 1.1.3 Control Statements 1.1.3.1 Classification of control statements 1.1.3.1.1 Branch statement_if statement 1.1.3.1.2 Branch statement_switch statement 1.1.3.1.2 Loop statement _while statement 1. Introductory statement This article only introduces the branch statement, and the rest of the statements are expected to be updated 1.1 Classification of sentences […]
Tag: stat
FPGA-Coke machine expansion training questions (state machine)
Topic: With the Coke machine as the background, the price of a bottle of Coke is still 2.5 yuan. Use the buttons to control the coin insertion (with button debounce function), you can insert 0.5 yuan coins and 1 yuan coins, one light will light up after 0.5 yuan is put in, 2 lights will […]
Flink’s state programming
Flink’s state programming 1. Keyed State 1.1, value state (ValueState) 1.1.1. Definition 1.1.2. Use cases 1.2, list state (ListState) 1.2.1. Definition 1.2.2. Use cases 1.3. Mapping state (MapState) 1.3.1. Definition 1.3.2. Use cases 1.4. Reducing State (ReducingState) 1.4.1. Definition 1.4.2. Use cases 1.5, Aggregating State (AggregatingState) 1.5.1. Definition 1.5.2. Use cases Two, broadcast state (BroadcastState) […]
Database: SQL statement
How to use the database: online transaction processing. Interaction with web/APP data analytics Data model: the concept of describing data, data relationship, data semantics and consistency constraints; the concept used to describe the data in the database is essentially how to organize the data schema: Given a data model, the application stores data through this […]
ElasticSearch group statistics query
ES group query maven dependency: <dependency> <groupId>org.springframework.boot</groupId> <artifactId>spring-boot-starter-data-elasticsearch</artifactId> </dependency> Build configuration class: package cn.com.newcapec.config; import org.springframework.boot.context.properties.ConfigurationProperties; import org.springframework.stereotype.Component; @Component @ConfigurationProperties(prefix = “sl”) public class EsServiceConfig {<!– –> private String publickey; private String esUserName; private String esPassword; private String esHost; private String esPort; private String esScheme; public String getEsUserName() {<!– –> return esUserName; } public void […]
First acquaintance with branch statements and loop statements
There are five types of statements in C language: control statement function call statement empty statement expression statement compound statement Control statements are used to control the execution flow of the program to realize various structural modes of the program (C language supports three structures: sequential structure, optional Selection structure, loop structure), they are composed […]
Python statistics 13 – regression multicollinearity, heteroscedasticity, autocorrelation test
In basic statistics, or econometrics, it is necessary to perform some tests that violate the classical assumptions on regression problems, such as multicollinearity, heteroscedasticity, and autocorrelation tests. These tests are very simple with stata, r, and Eviews, but many people can’t use python. Let’s take you to practice a full version of a regression case […]
pinpoint2.5.1-install URL Statistic
Directory 1. Preparation before installation 2. Installation and configuration 2.1 Install ZK and Kafka 2.2 Create a Kafka topic 2.3 Install pinot (local installation) 2.4 Create Pinot table 2.5 Configure and run Pinpoint Collector and Web with URI statistics 2.6 The configuration value of the agent’s URI statistics 1. Preparation before installation 1.1 Official installation […]
Shell script if else fi judgment statement application
Record: 431 Scenario: Shell script if else judgment statement application. General format: if then fi, if then else fi, if then elif then else fi, if then elif then elif then else fi. Version: CentOS Linux release 7.9.2009. 1.if else common format 1.1 Format 1: if then fi if condition then command1 … commandN fi […]
ps vs top: two different ways of CPU usage statistics
How to calculate CPU utilization rate? Simply put, the CPU usage of a process refers to how much time the CPU is spending running the process. In the Linux system, the running time of a process is counted by jiffies[1]. By calculating jiffies * HZ, the CPU time consumed by the process can be obtained, […]