expressions conditionals and loops

... release details Nutshell Handbook, the Nutshell Handbook logo, and the O’Reilly logo are registered trademarks of O’Reilly Media, Inc Python Cookbook, the image of a springhaas, and related trade dress ... Relational Database 6.9 Decoding and Encoding Hexadecimal Digits 6.10 Decoding and Encoding Base64 6.11 Reading and Writing Binary Arrays of Structures 6.12 Reading Nested and Variable-Sized Binary ... Parsing Command-Line Options 13.4 Prompting for a Password at Runtime 13.5 Getting the Terminal Size 13.6 Executing an External Command and Getting Its Output 13.7 Copying or Moving Files and Directories...

Ngày tải lên: 05/05/2014, 16:43

... appears You can have some script execute when you show and/ or hide the pop up by using the onpopupshowing and onpopuphiding methods, as when you show and hide items in a dynamic menu The second step ... items like menus and buttons 3.4 Tabular and Hierarchical Information Many options exist to display hierarchical information in your user interface The most common are tree-like and table-like ... boxes, trees, and grids With the exception of the tree, these elements are not limited in regard to the content they can contain Currently, the tree only holds text and image content and grids are...

Ngày tải lên: 17/10/2013, 19:15

... distributed random numbers with mean and variance 1: xn ˆ 2*sqrt(3)*(rand À 0:5); For two random variables x and y, we have E‰x ‡ yŠ ˆ E‰xŠ ‡ E‰yŠ, …3:3:15† i.e., the mean value of the sum of random ... results between (a) and (b) (d) A ˆ 1, f ˆ 600 Hz, and fs ˆ kHz (e) Compare and explain the results (b) and (d) 14 Generate 1024 samples of pseudo-random numbers with mean and variance using the ... random variable from a uniformly distributed random variable using N ! 12 The Gaussian random variable is frequently used in communication theory The MATLAB function randn generates pseudo-random...

Ngày tải lên: 19/10/2013, 23:15

... when the view is expanded and collapsed setCellText (row, colID, value) Called when the contents of the cell have been edited performAction (action) An event from a set of commands can be invoked ... to be defined and placed in a set In Example 3-12, the first column holds the labels and the second contains the text boxes These two columns are horizontal to each other and in rows ... Text Display Three tags available in XUL handle basic text display in the UI, and each has its own context for use They include a , a , and a element The caption is...

Ngày tải lên: 20/10/2013, 09:15

... ... has a command set that has its own commands and that pulls in a second set defined elsewhere (moreEditItems)

Ngày tải lên: 20/10/2013, 09:15

... splitter changes when a user handles the and collapses the splitter, for example, and then quits the persist attribute preserves the splitter state and its visibility for the next ... and These two elements create space between widgets in a box and can be horizontal or vertical depending on the orientation of the box The separator is a visible divider and the ... flicker and UI wobbles when content is being shown and hidden intermittently 3.9.3.2 Overflow A value of scroll or auto for the CSS overflow property ensures that a scrollbar appears and that...

Ngày tải lên: 24/10/2013, 08:15

... Print, and Open Notes [1] Chapter has more information on RDF datasources To delve deeper into the chrome layout and install issues, see Chapter 3.12 The Extras Certain lesser-known elements and ... simple, and the locator is href 3.13 Building the Application Shell Now that the main XUL widgets and some crucial concepts like the box model have been described, you can bring things together and ... abbreviated help and the display of values that are otherwise obscured in the UI In the Mozilla application, the most common places where they are used are on toolbar buttons and splitter grippies...

Ngày tải lên: 24/10/2013, 08:15

... buttons and buttonpack, there are special event handlers on the dialog element -ondialogaccept, ondialogcancel, and ondialoghelp that correspond to the buttons typically displayed and can execute ... Mozilla toolbar implements a toolbargrippy and a box that contains children The toolbargrippy is a bar on the lefthand side used for collapsing and expanding the bar This useful method allows users ... );"> As you can see, the dialog includes the XUL namespace and the id and title attributes However, some attributes, such as buttons and buttonpack, don't appear in a regular window context Dialogs...

Ngày tải lên: 26/01/2014, 07:20

... String class and its methods the Java standard class library the Random and Math classes formatting output enumerated types wrapper classes graphical components and containers labels and images ... Chapter focused on:        object creation and object references the String class and its methods the Java standard class library the Random and Math classes formatting output enumerated types ... methods that generate pseudorandom numbers • A Random object performs complicated calculations based on a seed value to produce a stream of seemingly random values • See RandomNumbers.java (page 126)...

Ngày tải lên: 15/03/2014, 11:20

... transmitted during given time period • Bandwidth: difference between highest and lowest frequencies that a medium can transmit 10 Baseband and Broadband • Baseband: digital signals sent through direct ... attenuation and crosstalk – CAT (Category 7): signal rates up to GHz 23 Comparing STP and UTP • Throughput: STP and UTP can both transmit data at 10, 100, and 1000 Mbps – Depending on grade of cabling and ... Layer Standards Table 3-2: Physical layer networking standards 31 Summary of Physical Layer Standards (continued) Table 3-2 (continued): Physical layer networking standards 32 Cable Design and Management...

Ngày tải lên: 30/03/2014, 07:20

... Global/Public (use sparingly and cautiously) – Available to all modules and procedures of Project – Initialized at start of Project • Module/Private (Form) – Available to one module and all procedures ... 2009 Handling Exceptions • Exceptions occur when user enters unexpected/invalid data and program code does not anticipate this possibility, such as – User enters nonnumeric data in Text Box and ... results in division by zero 3- 25 © 2009 Try/Catch Blocks • Used to catch and handle exceptions; referred to as error trapping or handling • Enclose statements that might cause an error within Try/Catch...

Ngày tải lên: 13/05/2014, 11:31

... Stout Knight, Candy Farrell, and Patrice Cherry, all from SAS Press, who turned my manuscript into a real book Thanks to Andrew Karp for introducing me to the world of PROC EXPAND, and to Mike Forno ... date or time and want to translate it into SAS date and time values? SAS has another built-in facility which performs the reverse translation, from the dates and times we understand and use to ... formats and informats in detail in Chapters and 3, because there are dozens of them 1.4 Date and Time as Numeric Constants in SAS We’ve talked about internal and external representation of dates and...

Ngày tải lên: 03/06/2014, 01:01

... APPLICATIONS Viscous liquid adhesives are used to glue fabrics and paper, apply paper labels, make cardboard and wooden boxes and shoes, and bind books Specially designed machines are required if ... would bend and jam Avoid these designs, if possible—Especially if automatic assembly methods will be employed A rotary screw-feed handles screws, headed pings, shouldered shafts, and similar ... Cutoff and transfer devices for glass tubes The upper part of a rotating glass tube is held by a chuck (not shown) When the cutter cuts the tube to a given length, the mandrel comes down and a...

Ngày tải lên: 22/10/2012, 14:26

... very pronounced between 950° and 1,000°F (510°C and 537.77°C) For example, at 950° and 1,000°F (510°C and 537.77°C), the strength of low-carbon steel is about one-third and one-sixth, respectively, ... codes and specifications Inspection Frequency and Extent The frequency and extent of inspection depend on factors such as pressure, temperature, corrosive action of the materials handled, and materials ... box and packing gland hold packing firmly against the shaft and casing A slight bit of internal leakage keeps the packing lubricated and cool The packing material, located between the casing and...

Ngày tải lên: 16/08/2013, 15:29

... mean and sordid, and to bask in the realm of enlightenment and beauty He would be valiant and courageous in defending virtue and right under all circumstances If he could only obtain strength and ... environment, to master the body and all things physical, and to live in a higher and more beautiful world (pp 30–31) And so let us, too, strive to become more like the Conifer youth, and in particular, the ... leave your money in the bank and save yourself the time and energy that an apartment building will require On the other hand, if you invest only $20,000 in the deal and borrow, or leverage, the...

Ngày tải lên: 07/11/2013, 14:15

... distinct and can be used independently or in tandem In this section we look at some ways to use autohandlers and dhandlers together Most important about the way dhandlers and autohandlers interact ... disk, and so on See Chapter for more information on the HTML::Mason::Component family of classes Using Autohandlers and Dhandlers Together Despite their similar names, the autohandler and dhandler ... determine a parent for /autohandler because there are no directories above /autohandler and /autohandler doesn't explicitly specify a parent, /autohandler remains parentless, and the construction of...

Ngày tải lên: 14/12/2013, 12:15

... introduced, and asked her for the two next Then the two third he danced with Miss King, and the two fourth with Maria Lucas, and the two fifth with Jane again, and the two sixth with Lizzy, and the ... London—his five sisters and a cousin And when the party entered the assembly room it consisted of only five altogether—Mr Bingley, his two sisters, the husband of the eldest, and another young man ... to be above his company, and above being pleased; and not all his large estate in Derbyshire could then save him from having a most forbidding, disagreeable countenance, and being unworthy to be...

Ngày tải lên: 21/01/2014, 18:20

Ngày tải lên: 26/01/2014, 07:20

... between water molecules and ions, and between water and polar solutes, in solution effectively decreases the electrostatic interaction between the charged substances and thereby increases their ... take place The structure and properties of water strongly influence the structure and properties of proteins, membranes, nucleic acids, and other cell constituents In most land plants, water is continually ... Weather and Our Food Supply (CAED Report 20) (1964) Center for Agricultural and Economic Development, Iowa State University of Science and Technology, Ames, IA Weig, A., Deswarte, C., and Chrispeels,...

Ngày tải lên: 20/02/2014, 01:20