PHP mobile internet development notes (8)-MySQL database basic review [2] bitsCN.com
I. Data Tables
To ensure data integrity and consistency, you must specify the field name, field type, and field attribute when creating a table. constraints, indexes, and ), primary key and foregin key.
Constraints:
Not null non-empty constraint
Unique uniqueness constraint
Primary key constraint
Foreign key constraint of f
How to obtain android mobile phone contacts and display them in letters (2): android contacts
The following describes how to categorize and display contacts with the same initials:
In the adapter implement SectionIndexer
In this way, the adapter must implement the following three interfaces:
@ Overridepublic Object [] getSections () {// collection of sections} @ Overridepublic int getPositionForSection (in
=650; "Src=" Http://s3.51cto.com/wyfs02/M02/88/AB/wKioL1f_Kg6x3f5IAAKNs27lmQM329.jpg-wh_500x0-wm_3 -wmp_4-s_2469965484.jpg "title=" flash cool beautiful buy. jpg "alt=" wkiol1f_kg6x3f5iaakns27lmqm329.jpg-wh_50 "/>Flash Cool(Flash Information Technology (Shanghai) Co., Ltd., multi-user mall system, theMall DepartmentIntegration,ElectricSub-businessServicesSolution SolutionsExcellentShow ClothesServicesBusiness)is the technical partner of the graceful purchase system platform, which will provide
Shadowbox-shadow:Backgroundbackground-size:10px 5px;-webkit-background-size:10px 5px;Background-origin:border|content|paddingMultiple backgroundsBackground:url (background1.png) left top no-repeat,URL (background2.png) left top no-repeat;Background color GradientBackground:-webkit-gradient (linear,0 0,0 100%,form (#fff), to (#000));Rounded border-moz-border-radius:10px 5px;-webkit-border-radius:10px 5px;border-radius:10px 5px;CSS3 Application in Mobile
Home sectionFor the moment, regardless of the CSS and IMG section, because it is very good to deal with, just give CSS to set something, as a debugging use, then, began to formally write-First, all kinds of third-party plug-ins are loaded in, i.e.And then load the following stuff up.--basic template--sub-Module Special home Page section--sub-module special rank Web Part--sub-module special login Web Part js for routing adjustment Transit station JSOf course, everything inside is empty.Then we fi
, with the following installation commands:NPM Install Gulp.spritesmith–save-devThen create the task in the Gulpfile.js file with the following code:var spritesmith = require (' Gulp.spritesmith '); Introduction of Sprite Plugin Gulp.task ("Sprite", function () { //define Task gulp.src ("theme/images/**.png") // Process the PNG file under the theme directory . Pipe (Spritesmith ({
Babel-plugin-import introduced, it allows us to introduce component modules on demand, and does not manage our style, now the main introduction method of Vue Project component library.Installing Babel-plugin-importNPM I babel-plugin-import-dConfiguring plugins (Plug-in) in. BABELRC"Plugins": [ "Transform-vue-jsx", "Transform-runtime", ["import", {" LibraryName ":" Vant "," style ":true}] ]Use Vant components on demandAfter we set up the. BABELRC, the Vant framework can be introduced
Proportion of different brand modelsTrend analysis of different brand years
Samsung Model Volume 2015 is the most prosperous period
Coolest 2016 listed Models
Score analysis of different brand network reviewsScreen size analysis of different brands
Most manufacturers prefer a 5-6-inch screen, which is also a relatively comfortable size.
Oppo are available in a large number of 5-7 inch models
Different brand RAM analysisPrice analysis of different brands
Glory, Meizu b
There are two methods of vivo X5pro screenshot
In the screenshot of the interface we long press home then, then in the pop-up "screenshot" button, we click on the screenshot, here you can choose the way you want to take a screenshot of the fun screenshots and long screen "fun screen" after three options: rectangular screen, lasso cut screen, graffiti screen.
The second method, also using the Android phone's own screenshot, we just need to go into the screenshot screen, and then pre
Such arrows are implemented with CSS-3 and the entire code is as follows:DOCTYPE HTML>HTMLLang= "en">Head> MetaCharSet= "UTF-8"> Metaname= "Viewport"content= "Width=device-width,initial-scale=1.0,maximum-scale=1.0,user-scalable=0"/> title>Documenttitle> styletype= "Text/css">. U-scrollload-tips{Color:#767676;text-align:Center;Height:40px;Line-height:40px;text-decoration:None;Display:Block;background:#f4f4f4;}. U-scrollload-tips I{Display:Inline-block;position:relative;vertical-align:
Last week, we completed the prototype development for Windows/wince platforms. In summary, FFMPEG took too much time, and this cross-platform library was really unfriendly. The compiled dynamic library for wince cannot be loaded normally on Windows Mobile 6.x. Therefore, the client of the wince platform can only run normally on Windows mobile5 and ppc2003. We look forward to the new progress of this database. However, I want to fully implement the fun
(2)The Protocol for communication is actually a rule agreed between the client and the server for communication. Because both the client request and Server Response content are in the HTTP body, and the body is only a byte stream, the client and server must be consistent in understanding these byte streams.
In fruite-machine, Delimiter is used to represent a new line of character information. If the new character information needs to be isolated,/is u
Dalian University of Technology Software college csdn University Club was established in April 2013. The club launched its own club activities based on the oureda lab of Dalian University of Technology Software Institute.
Club activities mainly include mobile development courses, web development courses, uidesign courses, and other technical activities, invite the elites of well-known IT enterprises to discuss small-scale discussions on successful exp
bouncing back in the animation, the Little red dot will appear a lot of criss-crossing white line (bug), is estimated to be used to calculate the connection point.SummarizeThis animation itself has no technical difficulty (meaning that the framework involved in the content is not particularly complex), complex is the determination of some key values: The main is to drag the tail of the drawing area of the determination. This part of the solution, the animation will not achieve the difficulty. O
In-depth introduction to game algorithms (4)-unity3d algorithms (2)-mobile ball, in-depth introduction-unity3d
Declare a gameobject object to implement a script for multiple objects
#pragma strict//code:myhaspl@myhaspl.com//date:2014-08-12var rotate_object:GameObject;var translate_object:GameObject;var fuhao:int;fuhao=-1;function Update () { if (rotate_object!=null){ rotate_object.transform.Rotate(
Mobile phone video 9-video player advanced features (2), 9-advanced features1. An error occurred while playing the listener.
Class MyOnErrorListener implements MediaPlayer. onErrorListener {@ Overridepublic boolean onError (MediaPlayer mp, int what, int extra) {// Toast. makeText (SystemVideoPlayer. this, "playing error", Toast. LENGTH_SHORT ). show (); // 1. the format of the video to be played is not supp
if the bad device token is public boolean judgebaddevicetoken (String devicetoken); Load the bad device token list private void Loadbaddevicetokenfile (String filename); Summary: The difficulty lies in Jsse and certificate understanding, as for APNs network protocol, processing or relatively simple.APNs Push Service Platform:For the APNs push service platform, there are some optimization techniques, this side is not in-depth, only from the personal point of view to describe a few.1). For gatew
To use Grub 2 in Ubuntu to fix the installation of grub 2, you must install the following package: grub-pc. grub-common can be found in the package management tool. Grub-install-v to check the current version. The traditional grub version is 0.97 or below, and the grub2 version is 1.96 or higher. The configuration file of grub 2 is/boot/grub. cfg, but this file c
example to introduce the methods of both.1. Set the data SetItemThe usage is Localstorage.setitem ("key", "value"), which means the value is passed to key. (Sessionstorage.setitem using the same method, the following no longer described below)2. Get Data GetItemThe usage is Localstorage.getitem ("key"), as long as the corresponding key value is entered, the corresponding value value can be extracted from it.3. Delete specific data RemoveItemUse Local
PU can save electricity and super power is actually a limit on the function of the mobile phone, here in this small series for you to sum up.
First, the normal power-saving mode
1. In standard mode, we slide the interface (left-"set-" "Battery").4. Click on "Power-saving mode-" off the right slider, the display "open" representative open, the effect shown in the following figure.
Second, to open the Super power saving mode
1. In standard mode, sli
The content source of this page is from Internet, which doesn't represent Alibaba Cloud's opinion;
products and services mentioned on that page don't have any relationship with Alibaba Cloud. If the
content of the page makes you feel confusing, please write us an email, we will handle the problem
within 5 days after receiving your email.
If you find any instances of plagiarism from the community, please send an email to:
info-contact@alibabacloud.com
and provide relevant evidence. A staff member will contact you within 5 working days.