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Java learning notes 40 (buffer stream)

Buffer stream: Among the various streams of reading and w...
18:55 4 May 2020

Write before Service (update ui in process)

Today's blog is from the second edition of Guo Shen's First Line of Code ...
18:44 4 May 2020

shell's seq (generates an integer between two numbers), expr generates a random number

1, Generate integers between consecutive numbers (including positive integers and negative integers) ...
17:49 4 May 2020

Intent -- open another Activity -- single pass value

In Android applications, we use the intent mechanism to jump between activities. This example briefly introduces how to...
17:21 4 May 2020

Welcome to ZK etcd config

https://github.com/houyijun/zk-etcd-config Welcome to ZK etcd config ZK etcd config is a lightweight dynamic attribute c...
17:14 4 May 2020

Detailed explanation of the selector of Hybird App (1)

Learning to develop hybrid app s requires learning some basics. This paper mainly introduces element selector, selector ...
16:36 4 May 2020

Three methods of class instantiation

The ultimate purpose of class instantiation is nothing more than to use the properties or methods of class objects. The ...
15:43 4 May 2020

Aliyun server building Docker

Software installation First install the appro...
15:41 4 May 2020

Getting started with spring -- three ways to create bean s

[*] static engineering method to create bean s [*] instan...
15:26 4 May 2020

Oracle automatic data backup

1, Oracle automatically backs up single table data for one month Mode 1: three step processing (batch file creation, sql...
14:04 4 May 2020

Which is more efficient about the select statement with the maximum id + 1 in the table?

Requirement: take the maximum id value + 1 in the stock table as the next id value. ...
13:08 4 May 2020

An example of Python decorator

Summary The decorator is essentially a Pytho...
12:50 4 May 2020

java classes and objects

java classes ...
10:53 4 May 2020

Java learning notes 50 (DBCP connection pool)

In actual development, connecting database is a very resource consuming operation. However, we need to connect database ...
10:37 4 May 2020

How to record external chain js file in react component

1. Description All of the following are from A complete collection of my github articles Content. Welcome to github, sta...
10:35 4 May 2020

React navigation 5.0 Series III: the use of Drawer navigation

First of all, I wish you all a happy youth day and May Day holiday. In the previous series of articles, we learned about...
10:10 4 May 2020

Source code interpretation of ArrayList

Properties of class public class ArrayList<E> extends AbstractList<E> implements List<E>, RandomAccess...
10:03 4 May 2020

Mysql series -- Chapter 6 triggers and stored procedures

Chapter 6 trigger and stored procedure of Mysql 1, Trigge...
9:09 4 May 2020

Linux sets the permanent and effective way of "the maximum number of files that can be opened by the process"

0. Before setting [root@localhost ~]# ulimit -a core file size (blocks, -c) 0 data seg size (kbytes, -d) unlimited sched...
8:45 4 May 2020

The difference between dynamic agent jdk and cglib

The description of dynamic agents has been partially described in the previous two articles Detailed interpretation of d...
7:48 4 May 2020

Talk about binlogconnector replicator's work

order This paper focuses on the work of binlo...
3:27 4 May 2020

PDO operation on Mysql database

1. Briefly introduce what is PDO PDO extension defines a ...
1:10 4 May 2020

Day 25 of egg learning notes: mongoose predefined pattern modifiers Getters and Setters custom modifiers

1, mongoose predefined pattern modifier. lowercase,upperc...
22:13 3 May 2020

Android ten minutes fast automatic integration of Aurora push

Android ten minutes fast automatic integration of Aurora push Aurora push is divided into manual integration and automa...
20:35 3 May 2020

Configuring Apache(httpd) with php

The main Apache configuration file is: / usr/local/apache2/conf/httpd.conf ...
20:33 3 May 2020

Android's multi-channel packaging

This article is reprinted from: http://blog.csdn.net/qq_/article/details/78922154 ...
14:07 3 May 2020

android recycleView can also be used to display four videos

Recently, the company made a project, which requires that four-way video can be displayed. It would be very troublesome ...
3:56 2 May 2020

The use case of GraphQL in koa2 server

1, Create project 1. Install some packages ...
16:02 1 May 2020

Basic data types of python

1. Numerical type: int (1), float (1.0, 2e8, 2e-8), tra string ("hello"),long(1111L),bool boolean type (True, ...
13:11 30 April 2020

OkHttp Custom Retry Number

In this paper, OkHttp's Interceptor is used to implement a custom number of retries ...
13:05 28 April 2020