Animation effects of pictures: transparency, displacement, rotation, magnification

Article directory 1. Function description 2. Code architecture 3. Interface layout file activity main.xml 4. Custom animation file myanmi.xml 5. Function code file 1. Function description Carry out transparency code change, displacement, rotation, amplification and other operations when loading a picture 2. Code archit ...

Posted on Mon, 30 Dec 2019 12:42:04 -0800 by rbarnett

Backup and recovery of Postgresql

background As a back-end programmer, it is essential to deal with the database, although the database is handled by a dedicated dba, with little skill.Thus, keep a record of the frequent daily operations of the postgresql database. First, it is convenient to find the time yourself, and also to share with you. Introduction to Commands In additi ...

Posted on Sat, 28 Dec 2019 19:50:53 -0800 by pesoto74

HTML5 -- read file FileReader object upload file

1. method: (1) abort() method: terminate read (2) readAsText(file, [encoding]) method: read the file as text (3) readAsBinaryString(file) method: read the file as binary encoding (4) readAsDataURL(file) method: read the file as DataURL encoding (5) readAsArrayBuffer(file) method: read the file as arraybuffer and transfer i ...

Posted on Sat, 28 Dec 2019 11:08:40 -0800 by bridawg

Gorang JSON parsing package GJSON details

Basic overview People who have used dynamic languages believe that it is very easy to parse JSON. You only need a few lines of code to get the parsed JSON object. For example, Python parses JSON as follows import json jsonStr = '{"name": "Bob", "age": 18}' result = json.loads(jsonStr) print(result["name"]) // "Bob" The simple data struc ...

Posted on Fri, 27 Dec 2019 01:51:57 -0800 by soulbro

Use IME to complete the function of receiving input method

Call windows's imm32.dll Complete the function of form receiving input method The code is as follows    /// <summary> /// Input method component /// </summary> class ImeComponent { #region Event /// <summary> /// Enter text event /// </summary> public delegate vo ...

Posted on Thu, 26 Dec 2019 07:11:25 -0800 by fragger

Dynamic agent - Method enhancement

1, Three ways to enhance methods **The first inheritance: to know the parent class **The second decorator mode: ***Two classes implement the same interface and get the reference of the other class ***Disadvantage: all methods in the interface need to be implemented **The third dynamic agent ***For example, mo ...

Posted on Wed, 25 Dec 2019 07:39:50 -0800 by seeker2921

Encrypt and decrypt strings in C?

How to encrypt and decrypt strings in C? #1 building A modern example of symmetric authentication encryption for strings. The general best practice for symmetric encryption is to use authentication encryption (AEAD) with associated data, but this is not part of the standard. net encryption library. So the first example uses AES256 , an ...

Posted on Wed, 25 Dec 2019 05:53:59 -0800 by danrah

java Buffer IO read and write txt file, no random code template, directly available!

Preface This is a blog written for your convenience. It has no technical content. I'm glad to help you. Content reference: https://blog.csdn.net/qq_36868342/article/details/76577758 PS: if you still have garbled code when using, please set the encoding mode for the read and write txt files to ensure that the file encoding is t ...

Posted on Tue, 24 Dec 2019 13:54:15 -0800 by xphoenixx

Python string common operations

Python string considerations Python strings cannot be changed. After updating a string, you need to put it into another variable Python does not support data types of char type, that is, data of single character type. Common built-in functions for Python strings encode(encoding='UTF-8',errors='strict') Encode the string in the encoding format ...

Posted on Mon, 23 Dec 2019 11:51:32 -0800 by mikewhy

MySQL Enhanced Semi-Synchronous BinlogServer (T1 Foundation) Developed with Python

Guidance: Author: Zeng Yongwei, Phase 10 student of Zhishutang, many years of experience in development and management of JAVA logistics industry and development and management of PHP/Python cross-border e-commerce, has a special passion for database systems, is good at simplifying business logic by using SQL programming, began working in MySQ ...

Posted on Sun, 22 Dec 2019 20:06:06 -0800 by fean0r