Copyright Statement: The original author of this article: Yiye Piaozhou Author's blog address: http://blog.csdn.NET/jdsjlzx
Recently, in project development, you need to use WebView to upload files. By default, use Android WebView does not support uploading files.
After searching for information, I learned that WebChrome Client needs to b ...
Posted on Mon, 08 Jul 2019 15:10:38 -0400 by brmcdani
Introduction to the environment:
Operating system: CentOS 6.5 64-bit version
Http Server Software: Apache 2.4.9
PHP Version: PHP 5.6.30
Database software: Mysql5.6.16
Software installation procedure:
1. Apache Installation
Install the required software download address:
1) Download apr:http://apr.apache.org/
Posted on Mon, 08 Jul 2019 12:35:29 -0400 by emrys404
Let's start with polymorphism.
Three characteristics of polymorphism:
Subclasses inherit parent classes
Subclasses override parent classes
Parents point to subclasses
The premise of polymorphic implementation is that there must be a relationship between classes, either inheritance or implementation, and override, which is in fact an abstra ...
Posted on Sun, 07 Jul 2019 21:22:59 -0400 by J.Daniels
Action Operator: Trigger operation, executed in Executor, if you want to see the results directly on the Driver side, you can use collect and foreach to pull data to the Driver side.
2.4.1 reduce(func) case
1. Function: aggregate all elements in RDD by func function, aggregate data in partition first, then aggregate data between ...
Posted on Sat, 06 Jul 2019 17:14:40 -0400 by splatek
Input, output and interruption
Principle of Assembly Language Microcomputer 8086
There is an input device whose data port address is FFE0H and the state is provided from the port FFE2H. When its D0 bit is 1, the input data is ready. Try to write a program segment that uses query mode to transmit data. ...
Posted on Sat, 06 Jul 2019 16:59:54 -0400 by jyhm
First, I would like to explain why the sub-table is needed.
When a piece of data reaches millions, it takes more time to query once, and if there is a joint query, you may die there. The purpose of the sub-table is to reduce the burden of the database and shorten the query time.
According to personal experience, mysql implements an sql ...
Posted on Fri, 05 Jul 2019 14:20:56 -0400 by Tanus
Installation steps of php in nginx environment
CentOS 6.5 / 7.0 x86_64
Fedora 20 x86_64
I. yum Installation Dependency Package
yum install zlib libxml libjpeg freetype libpng gd curl libiconv zlib-devel libxml2-devel libjpeg-devel freetype-devel libpng-devel gd-devel curl-devel openssl openssl-devel libxslt-devel
Posted on Thu, 04 Jul 2019 19:44:17 -0400 by Gregg
What is LVM
About the simple understanding of LVM [Baidu Encyclopedia is very detailed], now a php development project involves taking high-definition photos, project disk 20G is quickly occupied, the solution I think may be (1). Virtual directory designated to other discs or partitions, but also to modify the project image storage path, very ...
Posted on Thu, 04 Jul 2019 16:01:05 -0400 by The_broken
Chapter 16 Advanced Types
16.1 Types and Classes
In Java, until jdk1.5, we said that the type of an object is related to it.
The classes are mapped one by one, by obtaining their class objects.
If String.class, int.class, obj.getClass() and so on, we can judge that their type is not.
It's the same.
After jdk1.5, because of the introduction of ...
Posted on Thu, 04 Jul 2019 15:36:43 -0400 by crinkle
Git address: https://github.com/luguidong/melonImageCrop.git
Please use it in server environment. wampserver is recommended.
Head upload, almost involving the membership system website will use the function. In 16 years to do the company mall project New Intelligent Products Mall for Thinking When I was in charge of the function of u ...
Posted on Thu, 04 Jul 2019 14:42:45 -0400 by dmphotography