chapter 3  writing asynchronous code manually

... the server will give a status code of 200 and will send the document in the entity-body of its reply If the document was not modified, the server will give a response code of 304 (Not Modified) ... "d2VibWFzdGVyOnpycW1hNHY=" is decoded using base 64, it translates into webmaster:zrqma4v Here's a verbose example: When a client requests information that is secure, the server responds with response code 401 (Unauthorized) ... version of the document If the document is newer, the server will send it along with a 200 (OK) code Servers may also include a Last-Modified header with the document, to let the user know when

Ngày tải lên: 17/10/2013, 19:15

... data from external datasources and dynamically create or update content in the UI The following code extract shows the basic structure of a XUL template for displaying the browser history in Mozilla: ... the lifeline for the tree, supplying the data that populates the view The view is assigned to the code object that contains all the functions available to it and your implementation of what you ... your tree Trang 4Called when you click on the header of a particular column toggleOpenState Put code in here to be carried out when the view is expanded and collapsed setCellText (row, colID,

Ngày tải lên: 20/10/2013, 09:15

... more common way is to use the list-style-image style rule in CSS, as in the following snippet of code that uses the id style selector: #newfileBtn { list-style-image: url("chrome://editor/skin/images/newfile.gif"); ... often for buttons in Mozilla, but the best way to find and use classes is to consult the source code itself or to Trang 6create your own 3.7 Widget Interaction At a level above the use of widgets ... from; this base set can be defined in the top-level XUL file for your application The following code has a command set that has its own commands and that pulls in a second set defined elsewhere

Ngày tải lên: 20/10/2013, 09:15

... look at how the pack and align properties can effect the layout of widgets First, here is a bit of code with no constraints: <vbox style="width: 90px; height: 90px"> <button label="Pack ... <tabs> <tab label="Fish" /> <tab label="Birds" /> <tab label="Coders" /> </tabs> <tabpanels flex="1"> <button label="Swim"/> ... deck.setAttribute("selectedIndex", selected); Trang 11} When applied to the deck in Example 3-17, the code in Example 3-18 continuously flips to the next image in the sequence and returns to the top

Ngày tải lên: 24/10/2013, 08:15

... innovations Trang 8Variation in local building codes has also caused inefficiencies although repeated attempts have been made to standardize building codes In addition to the scale economies visible ... technological process of homebuilding, including demand instability, industrial fragmentation, and building codes Since market demand for new homes follows demographic trends and other socio-economic conditions, ... by natural, social and other locational conditions such as weather, labor supply, local building codes, etc • Since the service life of a facility is long, the anticipation of future requirements

Ngày tải lên: 28/10/2013, 15:15

... remaining items of the list present other installation steps If an installation goes awry, you can manually select the proper sequence of steps to quickly get things back on track However, you'll ... partition Use the Left and Right arrow keys to select the Type menu item and press Enter Type the code that corresponds to a Linux swap partition (82) and press Enter Trang 17Finally, you must

Ngày tải lên: 28/10/2013, 16:15

... how to use dictionaries to model sparse matrices  Python Knowledge Base has a lot of example code using dictionaries  Python Cookbook discusses how to sort the values of a dictionary by ... arguments  Python Tutorial shows how to use lists as stacks and queues has a lot of example code using lists  Python Library Reference summarizes all the list methods 3.3 Introducing Tuples ... ever going to do with it is iterate through it, use a tuple instead of a list  It makes your code safer if you “write-protect” data that does not need to be changed Using a tuple instead of

Ngày tải lên: 07/11/2013, 10:15

... are the fields—other than currency or quantity—needed to build the report For example, company code, plant, sales organization, G/L account, cost center, or period In a balance sheet report, ... general data selection values were used: Fields version (0), Record type (0), Period (1-12), Company code (3000), Profit center (3010–N999), and Ledger (8A) Below is an illustration of the completed ... list the G/L accounts and the columns contain the current as well as prior years (with the company code currency key figure) Trang 9Guided Tour Step 1: Determine the Table Before you can start creating

Ngày tải lên: 11/12/2013, 14:15

... return value indicates success or failure of the operation A negative return code signals an error; a 0 or positive return code reports successful completion The major argument is the major number ... option of specifying the major number at load time, or even at compile time The code we suggest using is similar to the code introduced for autodetection of port numbers The scull implementation ... and real code examples We defer discussion of the more complex operations to later chapters because we aren't ready to dig into topics like memory management, blocking operations, and asynchronous

Ngày tải lên: 24/12/2013, 01:17

... thateven remotely concerns them Fire and Health Codes The strongest of all the building codes are usually the fire and health codes of a munity Other building codes may be changed without the requirement ... constructed under older codes But fire and healthcodes are generally absolute, and it is rare for any building to be grandfathered in (al-lowed to remain as it is) if one of these codes gets changed ... anything to do with zoning and building codes must be approached very carefully Some other pitfallsappear with closely related problems such as parking codes and fire codes Both ofthese can be expensive

Ngày tải lên: 24/12/2013, 11:16

... sẽ mở ra cho chúng ta viết code behind private void TextBlock_MouseLeftButtonUp_Zip(object sender, MouseButtonEventArgs e) { ZipCode.Text = "" ; ZipCode.Foreground = new SolidColorBrush ... Artwork từ Expression Design 2 - Site import capabilities from Expression Encoder 2 - Khả năng nhập site từ Expression Encoder 2 - Tương tác với Visual Studio 2008 để giúp nhà thiết kế và lập trình ... “Browse” 5 Trong mục Language, chọn ngôn ngữ là Visual C#, đó sẽ là ngôn ngữ để bạn viết trong file code-behind 6 Chọn OK Khi một project mới được tạo ra bạn có thể bắt đầu ngay với các thao tác vẽ

Ngày tải lên: 14/01/2014, 11:37

... experiment and repair any errors that may creep into your code The typical workflow entails the following steps: 1 Enter HTML and script code into the source document. 2 Save the latest version ... boldface Even though two lines of code are writing information to the page, the result is rendered as one line, just as it would be if all the text had been hard-coded in HTML Trang 6Entering Your ... the enclosed code is written Therefore, when the browser receives this signal that your script uses the JavaScript language, it uses its built-in JavaScript interpreter to handle the code You can

Ngày tải lên: 17/01/2014, 08:20

... */ codeptr = (unsigned int code *)start; codeend = (unsigned int code *)end; /* Now perform the checksum calculation, looping */ /* until the end of the range is reached */ while (codeptr ... - Sample Code Sample code that is fully compilable in the evaluation version of Keil may be found at the following URL: http://ubermensch.org/Computing/8051/code Sample Code Example code for ... why code may no longer compile when the project grows too large Program code starts at address 0x4000 All C code compiled and linked using the Keil tools will begin at address 0x4000 in code

Ngày tải lên: 20/01/2014, 02:20

... containing position-inde- pendent code The only way you can use other code is to either make sure theApache core itself already contains a reference to it, load the code yourself via dlopen( ), or ... installation of Perl modules, while XS allows you to call functions implemented in C/C++ from Perl code. Trang 4Pros and Cons of Building mod_perl as a DSOAs of Apache 1.3, the configuration system ... havespecified theAPACHE_SRC parameter If you choose not to build the binary, you will have to do that manually Build-ing an httpd binary is covered in an upcomBuild-ing section In any case, you will

Ngày tải lên: 21/01/2014, 06:20

... an XML parser library, written in C, that was integrated into Mozilla at the early stages of the code rewrite when the source was made open During parsing, a content model based on the Document ... and <wizard> Overlays play an especially important role in managing and modularizing the code in your XUL application, so the section Section 3.11, later in this chapter, is dedicated to ... ondialogcancel, and ondialoghelp that correspond to the buttons typically displayed and can execute code in response to user input As with onunload, you can place a function in the ondialogaccept

Ngày tải lên: 26/01/2014, 07:20

... 1.1, the newest version of HTTP to date  Listing of server response codes, and discussion of the more common codes These codes are the first indication of what to do with the server's response ... decodes the entity body, processes it, and returns a response entity-body to the client: Trang 19characters such as spaces, newlines, etc For that reason, it is called encoded URL-The URL-encoded ... program, which then decodes it from URL-encoded format to retrieve the values entered by the user File uploads with POST Trang 20POST isn't limited to the application/x-www-form-urlencoded content

Ngày tải lên: 26/01/2014, 07:20

... indicates the HTTP version, a digit status code, and a human-readable description of the result Status codes are grouped as follows: Trang 16three-Code Range Response Meaning 100-199 Informational ... errors HTTP defines only a few specific codes in each range, although these ranges will become more populated as HTTP evolves If a client receives a response code that it does not recognize, it ... basic meaning from its numerical range While most web browsers handle codes in the 100, 200, and 300 ranges silently, some error codes in the 400 and 500 ranges are commonly reported back to the

Ngày tải lên: 26/01/2014, 07:20

... generally involves starting with an existing base of codeand then using several of the Be software kit classes to add new functionality tothe base code In Chapter 2, BeIDE Projects, you saw how to ... named because the function serves as a place where youcan “hook” your own code onto that of the Be-written software kit code Byimplementing a hook function, your application in essence extends ... object from the message mes-The BLocker class is used to limit program access to certain sections of code.Because the BeOS is multithreaded, there is the possibility that a program willattempt to access

Ngày tải lên: 26/01/2014, 07:20

... variables in all asynchronously rotating reference frames can be written from (3.4-2) as For linear symmetrical inductive elements, the steady-state qs voltage equation in all asynchronously ... time zero It is often convenient to set θ (0) = 0 Then from (3.7-6) and (3.7-7) Thus, in all asynchronously rotating reference frames ( ω ≠ ω e ) with θ (0) = 0, the phasor representing ... (3.8-6) the ( ω e − ω ) factor comes about due to the fact that the steady-state variables in all asynchronously rotating reference frames vary at the frequency corresponding to ( ω e − ω ) From

Ngày tải lên: 16/02/2014, 18:46

... extensions enable you to connect it to a large number of payment gateways and shipping services Modular code enables you to upgrade your Magento installation while retaining your customizations Support ... engines about a page and help the You can see the meta tags in a page if you view the pages' source code The <title> Single Origin Coffee from Brew-Me-A-Cup - Default Store View </title>

Ngày tải lên: 13/03/2014, 18:13