Get SMS verification code countdown
Development tools and key technologies: back end
Author: Wang Liyan
Time of writing: May 12, 2019
Hi, lovely me again!
Recently, I'm working on a project. It's necessary to register and log in. So what I'm going to say today is to get the countdown of SMS verification code when registering, because when registering, you need to ...
Posted by 0p3n_p0rT on Tue, 12 Nov 2019 09:09:12 -0800
15. Spring MVC for json interaction
Spring MVC for json interaction
json data format is commonly used in interface calls and html pages. json format is simple and easy to parse.
Request json, output json. It is not convenient for the front page to convert the requested content into json.
Request key/value and output json. This method is commonly used.
Environmental preparation
...
Posted by jpraj on Tue, 12 Nov 2019 06:16:30 -0800
[Android 9.0] can't open usb uvc camera
Background: the development board of Android 9.0 system can access the binocular camera, only one camera can be opened, the other cannot be opened
Key log:
From the view of serial port printing, usb driver correctly recognizes usb hub and two usb camera devices
[ 4526.512542] usb 2-1: new high-speed USB device number 8 using ehci-platform
& ...
Posted by jcanker on Sun, 10 Nov 2019 12:43:40 -0800
[old driver takes you to fly] basic introduction to vue.js
Life cycle hook function
From the time when the vue instance is created to the time when the instance is destroyed, vue provides us with multiple hook functions in this complete declaration cycle.
vue1.0+
vue2.0
describe
init
beforeCrete
The component instance is created before the component computes the property
creat ...
Posted by baiju on Sun, 10 Nov 2019 08:20:50 -0800
7-2 product category list shows dao, service, controller, web, resultType and resultMap
I. Development of Dao layer
1. Develop dao interface
public interface ProductCategoryDao {
/**
* Query the commodity category of the shop through the shop id
* @param shopId
* @return List<ProductCategory>
*/
List<ProductCategory> queryProductCategoryList(long shopId);
}
2. Develop dao implementation class
...
Posted by riyaz on Sat, 09 Nov 2019 09:12:52 -0800
Flutter Basics
The first time I came into contact with Flutter was on mooc.com. I saw Flutter in Android course. At that time, I thought what kind of grammar it was, and I could write mobile terminal. Later, I saw the introduction of nuggets and knew that saltfish was developed with Flutter. I felt it was very powerful. I found this ...
Posted by djwinder on Sat, 09 Nov 2019 06:57:23 -0800
inline exploration under clang compiler
inline exploration under clang compiler
Today, I saw an article about the introduction of inline functions, which mentioned the functions and application scenarios of inline functions. I just read some materials of clang compiler recently, and I just sent some time to explore
The introduction of this article is as follows Inline function(htt ...
Posted by nsarisk on Sat, 09 Nov 2019 02:50:38 -0800
Deep Analysis of ForkJoinPool in Dead Javaa Thread Series
(Source code is easier to see on mobile phone's horizontal screen)
Note: The java source analysis section is based on the Java 8 version unless otherwise specified.
Note: This article divides and conquers thread pool classes based on ForkJoinPool.
brief introduction
With the development and widespread use of multicore processors on hardware, ...
Posted by sharpnova on Fri, 08 Nov 2019 13:47:32 -0800
Time series of Python data analysis
1. Time series type
Timestamp (timestamp)That is, a certain moment
Fixed periodFor example, January 2018 or January 1, 2018
Time intervalIndicated by start and end timestamps
2. Python processing module
Python standard library contains data types for date and time data, mainly using datetime, time, calendar modules.The datetime module ofte ...
Posted by Liz_SA on Fri, 08 Nov 2019 13:18:33 -0800
Communication between parent and child components of vue
I. data transfer from parent component to child component
1. Form parent-child relationship first
<!DOCTYPE html>
<html lang="en">
<head>
<meta charset="UTF-8">
<title>Document</title>
<script src="../js/vue.js"></script>
</head>
<body>
<div id="app">
& ...
Posted by txmedic03 on Fri, 08 Nov 2019 06:46:44 -0800