The Session Description Protocol (SDP) provides multimedia session descriptions for session notifications, session invitations, and other forms of multimedia session initialization.
The session directory is used to assist with multimedia conference announcements and send relevant settings for session participants. SDP is used to transmit this information to the receiving end. SDP is completely a session descript
How to add a field description and obtain the field description! New: in SQL Server 2000, Microsoft added extended attributes to help users define and operate user-defined attributes on multiple database objects. Exec sp_addextendedproperty n 'Ms _ description', N 'field description', N 'user', N 'dbo', N 'table', N 't
Get enumeration Description Information (Description)See other people's enum has a Get enumeration description information (Description), directly to their own add, found not work. Look for a search on the net, originally want this kind of add:1. Defining an EnumUsing System;Using System.ComponentModel;public enum Time
[Reprint] [C #] enumeration operation (obtain Description from enumeration, obtain enumeration Based on Description, and convert enumeration to ArrayList) tool class,
Key code:
Using System; using System. collections; using System. collections. generic; using System. componentModel; using System. reflection; namespace CSharpUtilHelpV2 {///
Unit test code:
Using Microsoft. visual Studio. testTools. unitTes
PostgreSQL tutorial (1): Detailed description of data tables and detailed description of postgresql
I. Table definition:
For any relational database, tables are the core and basic object units of data storage. Now let's start from here.1. Create a table:Copy codeThe Code is as follows:Create table products (Product_no integer,Name text,Price numeric);2. delete a table:Copy codeThe Code is as follows:Drop ta
View the description file in Xcode and the Xcode description file
IOS application packaging is inseparable from the description file, that is, the mobileprovision file.
Generally, double-click the file to run Xcode. But what is in the specific file? Does Xcode actually load the file? What are the descriptions in the file? The following steps are helpful for ans
CSS selector description-link selector and css selector description
Original article: http://www.chinaz.com/web/2012/1017/278553.shtml
I believe everyone is familiar with CSS selector. The selector includes element selector, link selector, attribute selector, pseudo class selector, and pseudo object selector. Among the many choices, we can flexibly choose the appropriate choices according to our own needs
Detailed description: develop php extensions under Window7, and detailed description of window7php extensions. Detailed description of php extensions under Window7, detailed description of window7php extensions I. First, check the phpinfo () information PHPVersion5.4.34ZendExtensionBuildAPI220100525, TS, VC9PHPExtensio
Add the following to the block file for use: It is generally set in the block with the largest content, for example, mage_catalog_block_category_view.
Protected function _ preparelayout ()
{
Parent: _ preparelayout ();
$ This-> getlayout ()-> createblock ('catalog/breadcrumbs ');
If ($ headblock = $ this-> getlayout ()-> getblock ('head ')){
$ Category = $ this-> getcurrentcategory ();
If ($ Title = $ category-> getcategoritle ()){
$ Headblock-> settitle ($ title );
}
Event Handler Description Events Handling Description (custom control) How should a new event handler is defined if it does not already belong to the base class? Let's look at this using the "Tfrxeditcontrol" common control as an example: How should a new event handler be defined if it does not belong to the base class? Let's take a look at using the "Tfrxeditcontrol" control as an example: Tfrxeditcontrol
BEAUTIFULSOUP4 description, which is an HTML parser, the use of the following description:Soup = BeautifulSoup (Html_doc)Print Soup.title//Get an elementPrint Soup.title.name//Get a property of an elementPrint soup.title.string//Gets the same text as the Soup.title.get_text () function under an elementPrint SOUP.PPrint Soup.aPrint Soup.find_all (' a ')//Find all specified elements based on element name or attribute valuePrint Soup.find (id= ' link3 ')
Standard Base64 algorithm description, base64 Algorithm Description
Author: zhanhailiang Date: 2014-12-19Algorithm Description:
Base64 requires that each three 8-bit bytes be converted into four 6-bit bytes (38 = 46 = 24), and then 6-bit bytes are added with two more 0 bits to form four 8-bit bytes. That is to say, the converted string is theoretically 1/3 longer
Detailed description of dependency injection in Angularjs, detailed description of angularjs Injection
An object can be controlled in three ways:
Create dependency internally;
Use global variables for reference;
PASS Parameters as needed
Dependency injection is implemented in the third way. For example:
function SomeClass(greeter) {this.greeter = greeter;}SomeClass.prototype.greetName = function(nam
different drive.Usually the system files are stored in the root drive, and the user files are stored in another drive, such as: The above shows two hard drives in the computer. A hard disk is associated with the root directory of the virtual directory. The remaining hard drives can be mounted anywhere in the virtual directory structure. In the example above, the second drive is mounted to the/home location.Two. System file directory structure descriptio
Enable the Api Description in WebApi 2 (Description in Help) and webapide.pdf
Environment: vs2013 + web api 2
Problem: by default, the Web Api 2 project is created. The Api information is displayed on the Help page, but the Description Column cannot obtain data, as shown in:
Solution:
1. Enable the output XML document file:
Right-click a web api project an
Detailed description of String concatenation in javascript and detailed description of javascript concatenation
Recently, in the study of javascript advanced programming, there is a description of the character string. The original Article is roughly as follows: strings in ECMAScript are immutable, that is, once a string is created, their values cannot be changed
Implement the producer and consumer model (instance description) by using the Queue instance description
In Python, a queue is the most common form of data exchange between threads.
The Python Queue module has three queues and constructor functions:
1. The first-in-first-out Queue of the Python Queue module. Class Queue. Queue (maxsize)
2. LIFO is similar to heap, that is, first and then output. Class Queue
Detailed description of instances for migrating IOS database upgrading data, and detailed description of ios database upgrading data
Detailed description of IOS database upgrading data migration instances
Summary:
A long time ago, I encountered a reference scenario for database version upgrade. At that time, I simply deleted the old database file and rebuilt the
Detailed description of Join instances in Mysql, and detailed description of mysqljoin instances
In the previous chapters, we have learned that reading data from a table is relatively simple, but in real applications, we often need to read data from multiple data tables.
This section describes how to use MySQL JOIN to query data in two or more tables.
You can use Mysql join statements in SELECT, UPDATE, and
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