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software development clearly and intuitively, clarify the specific tasks that need to be completed in each stage, and play a guiding and normative role in the development process.
Software Development Methodology
Programming style
documentation;
Have a clear name for the identifier;
appropriate procedural notes;
The procedural writing style of Liang-ha;
The form of indentation;
A clear statement structure;
The writing of expressions shou
Share Ubuntu12.04 Installation Basics Tutorial (text)
Original address: http://teliute.org/linux/Ubsetup/lesson21/lesson21.html
1, into the Live CD desktop1 Set up a good start, disconnect the network, and then restart the computer, you can start with a hard disk, you can also be engraved into the CD-ROM boot, mirrored download address:Go to find blue link Click to download, such as ubuntu-12.04-desktop
Oracle Database Basics Tutorial: Getting Started is actually very simpleOracle database system is one of the most popular client/server databases at the moment. From the beginner's point of view, this anthology introduces the basic knowledge of Oracle database development in a step-by-step way. In addition, the collection of database basic theory and its application in the process of database development ar
Basic |xhtml| HTML Basics Tutorial
XHTML is a combination of HTML and XML (Extensible Markup Language).
XHTML contains all the HTML4.01 elements that combine with XML syntax.
Why should I use XHTML?
We think many of the pages on the World Wide Web contain bad HTML code.
The following HTML code can still work well even if it does not comply with the HTML code:
html
XML is a markup language in which al
following is a typical callback method:
function callback() { if (xmlHttp.readyState == 4) { if (xmlHttp.status == 200) { //do something interesting here } } }
As you can see, this is different from the normal request/response pattern, but not entirely unfamiliar to web developers. Obviously, there are things you can do when creating and building XMLHttpRequest objects, and you can make a difference when the callback function completes the state check. Generally, you will wrap these standard
the last domain with the jump bar, if the previous application (not using AJAX application) did not save the form, then use AJAX after the application do not save the form.
The most important problem when implementing Ajax is to strive for simplicity, completely from the user, to try to "fool". To take the user to heart, do not do "resume-driven design." If you're just trying to get your new boss to accept you, and therefore use Ajax in your application, this is not appropriate; If you use Aja
coding styles to provide JavaScript validation
JSLint may have identified some structural errors as questionable coding practices, some of which are listed below (the complete list can refer to JSLint's documentation).
JSLint requires that all lines of code end with semicolons. Although JavaScript does allow newline characters to be used as a line terminator, it is generally considered ambiguous and a bad coding style.
Statements using if and for are required to enclose the block of statemen
links displayed in the address bar, which means you can't easily bookmark a page or send a link to a friend. For many applications, this may not be the case, but if your site is dedicated to providing traffic routes and the like, you should provide a solution to this problem.
It is important to use Ajax not to overdo it. Remember, JavaScript runs on the client's browser, and if there are thousands of lines of JavaScript code, it may make the user feel too slow. If the script is not written pro
The important position of the table in HTML, which is equivalent to the concrete frame in the building line, can be the table before the div is large. The role of the table in the page is mainly to page layout and positioning, through the integration of table planning to design a reasonable page layout.Of course, the table is more important to the role of data display, this is not the other code can be replaced.For ease of viewing, set the table border after the effect:Access OA small Flying Fis
, H3, H4, H5, h6 {color:blue;}Class 4.3 selectorIn the HTML fileThisheading is very important.Thisparagraph is very important.In the CSS fileIf you only want to change the H1 elementH1.important{color:blue;}If you want all the same classes to be changed*.important {color:red;}Of course, you can also omit the asterisk "*"But be sure to pay attention to the point in front of the class "."4.4 ID SelectorIn the HTML fileIn the CSS file#intro {font-weight:bold;}First create an ID name in the HTML fil
parameter, acts as a factory, and returns a JQuery object that contains the corresponding elements in the page. All selectors that can be used in a style sheet can be passed to this function, and then we can apply the jquery method to the set of matching elements. There are three basic selectors (and, of course, other), tag names ,IDs , and classes . These selectors can be used alone or in combination with other selectors. When the method is concatenating to the $ () factory function, the eleme
right4) computer software and trade secrets2 infringement of trade secrets: theft, inducement, coercion or other improper means to obtain the rights of the person's computer software business secrets, disclosure, use or permit others to use improper means to obtain the computer software trade secrets, breach of the agreement or violate the rights of the person concerned about the confidentiality of trade secrets requirements, disclosure, Use or permit others to use the business secrets of the c
compilation, such asThe difference between xmlns and xmlns:x here is that X is used as an alias, when applied, in the prefix form, and xmlns as the default namespace, not the element identified by the prefix, from that namespace.Syntax for XAML namespaces:xmlns[: Optional mapping prefix]= "namespace description"Note: xmlns without an optional mapping prefix is the default namespace for WPF, and a XAML file can have only one default namespaceA complete XAML file, you must have two namespaces.2.
Validate EntityYou can write the custom server side validation for any entity. To accomplish this, override validateentity method of DBContext as shown below.protected OverrideSystem.Data.Entity.Validation.DbEntityValidationResult validateentity (Dbentityentry entityentry, system.collections.generic.idictionaryObject,Object>items) { if(entityentry.entity isStudent) { if(entityentry.currentvalues.getvaluestring> ("Studentname") =="") { varList =NewList(); List. ADD (Ne
create a new diagram and move Teacher and Course entities to a new diagram as shown below:So, in the this-is-a-can create a new diagram from an existing diagram.You can also include the related entities of a particular entity. For example, right click on Student entity→select ' Include related '. Standard and Course entities would also be included, because Student have their reference property:This would include standard and Course entity as shown below.Additionally, you can also move propertie
objects and Mapping information on how Domain OB Jects map to relational database objects (tables, views StoredProcedures). ORM allows us to keep the database design separate from our domain class design. This makes the application maintainable and extendable. It also automates standard CRUD operation (Create, Read, Update Delete) so that the developer doesn ' t need to write it manually.A Typical ORM tool generates classes for the database interaction for your application as shown below.Visi
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