Today, I saw Brian proffitt's article in IT world. I thought it was well written. I share it with you and give you some simple introductions.
Here are some introductions to Brian proffitt:
Brian proffitt is a veteran Linux and open source journalist/analyst with experience in a variety of technologies, including cloud, virtualization, and consumer devices.
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So far, no one has seen the major actions of the tizen mobile system, but even below the limited resources, we can still see the comp
ESN, ICCID, IMEI, IMSI, PIN and SIM
Doc ID:KB04665
Last Modified:2006-11-16
Document Type:What Is
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Environment
BlackBerry device
DetailsThe following table describes common acronyms related to the BlackBerry device.
Acronym
Description
ESNElectronic serial number
The ESN is a unique number that identifies a device for CDMA and mobitex networks. The ESN is print
Pushmail is hot in China, the most famous one is the BlackBerry, which was launched in the US and Canada as early as 2001. The BlackBerry is targeted at corporate users, who must first set up a dedicated mail server and BlackBerry Service software in order to send the company's e-mail and Outlook calendar data directly to the user's
#dic = {1:2}: "Hahaha"}#the Dict is mutable. Cannot be a keyDIC = {1, 2, 3}:'Oh, huh ?'} #set is variable and cannot be a keyThe data saved by Dict is not saved in the order we added. are stored in the order of the hash table. And the hash table is not continuous. So you can't do the slicing work. It can only get the data in Dict by keyTwo. Dictionary additions and deletions and other related operations1. IncreaseDIC ={} dic['name'] ='Chow Yun Fat'
) VALUES (' YSB ');Mysql> select * from student;+----+------+------+| ID | name | sex |+----+------+------+| 8 | YSB | Male |+----+------+------+#应该用truncate清空表, the truncate is a direct emptying of the table, and it is used when deleting a large table, rather than deleting the record one by one.Mysql> truncate student;Query OK, 0 rows affected (0.01 sec)mysql> INSERT into student (name) VALUES (' Egon ');Query OK, 1 row affected (0.01 sec)Mysql> select * from student;+----+------+------+| ID |
Over the years, people ask each other when they call: "Can you hear me now?" "Soon after, people's problems will become:" Can you find me now? ”。Over the past few years, the mobile phone sector is quietly undergoing a change, known as the "Mobile location Services", the industry location-based it is lbs. The new generation of smartphones can use Global Positioning systems (GPS) or wireless networks to pinpoint the location of users, and this has spawned a wave of innovation.The explosive growth
The biggest difficulty in mobile client software development is that the platform is not uniform and there are too many mobile development platforms. Mobile phones can be divided into smartphone development and featherphone. Development platforms can be divided into open platforms and closed platforms. Open platforms include Symbian, windowsmobile, Linux, iPhone, Android, BlackBerry, j2_rw, and brew. Mobile apps are supported.ProgramDownload and ins
). PhoneGap is known as "the only open-source mobile phone framework that supports 7 platforms "! It supports Android, iOS, Windows Phone 7, webOS, Symbian, and bada platforms. Even Adobe Dreamweaver 5.5 supports PhoneGap. Adobe has acquired the PhoneGap R D vendor Nitobi )!
Sencha Touch
Development languages: HTML5, CSS3, and JavaScript
Development Tool: Download Sencha Touch
Link: http://www.sencha.com/products/touch/
Advantages: free, small, touch screen, and data integration
BK
Article Description: Mobile handheld and tablet computer and Web application Design UI specification.
Official user interface (UI) and user Experience (UX) guidelines from the manufacturers, links to which your can find below , are a source of inspiration for mobile web and app. Here, you'll find guidelines, samples, tips, and descriptions of common mistakes. Many of the guidelines focus on native application development, but we can apply most parts of them to mobile Web design t Oo.
Pre-restore background color and pre-swap background colorThis function is often used, because we often change the front background color to other colors, if you want to use the default gray-white will not need to adjust the color panel, directly press the D key can be restored. Press the X key to swap the front background color. undo the wrong action Ctrl + Z or CTRL+ALT+Z keyTwo shortcut keys are different, CTRL + Z can only undo one step, and the C
Learning Précis-writersThere are two types of keys: symmetric key and asymmetric keytwo key typesAccording to the cryptographic keys used by the cipher algorithm and the encryption key is the same, whether the decryption process can be deduced from the encryption process (or by the decryption process to derive the encryption process), the cryptosystem can be divided into symmetric cryptography (also known as single-key cryptography, secret key cryptog
Source program. ^Using System;
Using System. Text;
Using System. Runtime. InteropServices;
Using System. Security. Cryptography;
Using System. IO;
Namespace Utility
{
/** //
/// The DSAPI wrapper
/// Security encryption algorithm for future extension
/// To be released as part of the Microsoft Configuration Building Block
///
Public class DataProtector
{
// Private parameter ricalgorithm mCSP;
/** //
/// Create a base class of the symmetric encryption algorithm
///
Private Sys
, each value is separated by ",", key and value are delimited with ":", key cannot be duplicated, and value is obtained by keyTwo methods of value-taking:Print (dic[' id ') and print (Dic.get (' id '))Difference: 1, the value of the square brackets, cannot find the key value will be error, get value can not find no error, will return none. 2,get method can also pass a parameter, if get not to the key value, return parameters, such as print (Dic.get ('
Vine '} print (dic[123 ] Print (Dic[true]) print (dic[' id ') print (dic[' Stu ') print (dic[(1, 2, 3)]) # illegal # dic = {[1, 2, 3]: ' Jay Chou '} # list is mutable . cannot be as key # dic = {{1:2}: "Hahaha"} # Dict is mutable. cannot be as key dic = {{1, 2, 3}: ' Hehe '} # set is mutable and cannot be a keyThe data saved by Dict is not saved in the order we added. are stored in the order of the hash table. And the hash table is not continuous. So you can't do the slicing work. It can only g
source admin-openrc.sh
Generate and add a key pair
nova keypair-add demo-keyTwo. Create an instance
List flavors, mirroring with network, security group
nova flavor-listnova image-listneutron net-listnova secgroup-list
Create an instance (demo_net_id is the ID of the Demo-net network listed above)
Nova Boot --Flavor M1.Tiny --Image Cirros-0.3.4-x86_64 --Nic Net-id=demo_net_id --Security-Group default --K
(by requesting the CA)The client decrypts a digital signature with a public key to obtain a hash valueThe client computes the hash value of the public keyTwo hash values are compared, and if the same, the certificate is valid, the server's public key is also trusted.The certificate is invalidated, and when the server private key is lost and stolen, the certification authority needs to invalidate the certificate (REVOKE)To void a certificate, the cert
Tags: mysql data backupI. Introduction of IDE ToolsThe production environment is also recommended to use the MySQL command line, but for our testing purposes, you can download the link using the IDE tool: HTTPS://PAN.BAIDU.COM/S/1BPO5MQJMaster:1. Test + link Database2. Create a new library3. New table, new field + Type + constraint4. Design Table: FOREIGN key5. New Query6. Backup Library/TableAttention:Batch Add Comment: Ctrl +? KeyBatch to comment: ctrl+shift+?
Tags: statement line min keep MySQL field windows set shiftOne: Introduction to IDE ToolsThe production environment is also recommended to use the MySQL command line, but for the convenience of our testing you can use the IDE tools.Master Test + link database, new library new table, new field + type + constraint design table: Foreign key new query backup library, table Note: Bulk add Comment: Ctrl+? Key batch to comment: Ctrl+shift+? KeyTwo MySQL data
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