Lazy evaluation The benefits of lazy evaluation include: Performance increases by avoiding needless calculations, and error conditions in evaluating compound expressionsThe ability to construct potentially infinite data structuresThe ability to define control flow (structures) as abstractions instead of primitives Lazy evaluation is often combined with memoization, as described in Jon Bentley's Writing Efficient Programs. After a function's value is computed for that parameter or set of parameters, the result is stored in a lookup table that is indexed by the values of those parameters; the next time the function is called, the table is consulted to determine whether the result for that combination of parameter values is already available. If so, the stored result is simply returned. If not, the function is evaluated and another entry is added to the lookup table for reuse. The opposite of lazy evaluation is eager evaluation, sometimes known as strict evaluation. History Applications Python
Hackasaurus Look ahead Learn all about Firefox OS » Welcome to Webmaker! That username is taken You must choose a username Invalid username. All usernames must be between 1-20 characters, and only include "-", "_" and alphanumeric characters You must agree to our terms and conditions. X-Ray Goggles Remix and share web pages instantly Activate X-Ray Goggles See how Goggles work by swapping an image Copy this image URL (highlight the text below, right-click, then copy the link) The URL you just copied links to a new image! Share your remix When you're ready to share your remixed page, click the Publish button or press P on your keyboard. Help If you need help, make sure the X-Ray Goggles are activated, then press H on your keyboard. Remix any webpage! You can take X-Ray Goggles with you anywhere on the web: Make sure your web browser's bookmarks bar is enabled. Now visit any website on the internet.
Eco-friendly Gallery | Environment Team The Future Of Work Is Play Humans love games. Just check the current news cycle for evidence: The Xbox 360’s sleek, new controller-free gaming device, Kinect, is the fastest-selling consumer electronic product ever. Foursquare has attracted millions of badge-seeking users and aspiring “mayors.” And new programs like Quest to Learn are bringing game dynamics into our educational system. What is it about games that makes them so appealing? What’s the most basic definition of a game? I’m partial to the definition put forth by Katie Salen and Eric Zimmerman in their book Rules of Play: A game is a system in which players engage in an artificial conflict, defined by rules, that results in a quantifiable outcome. What are some examples of how I could use the power of games to keep myself motivated during a long, personal project (say, making a documentary film)? The trick here is to turn a long experience that has very limited feedback into something that is broken up into smaller and more rewarding chunks.
Import and Export Bulk Data by Using the bcp Utility (SQL Server) This topic provides an overview for using the bcp utility to export data from anywhere in a SQL Server database where a SELECT statement works, including partitioned views. The bcp utility (Bcp.exe) is a command-line tool that uses the Bulk Copy Program (BCP) API. The bcp utility performs the following tasks: Bulk exports data from a SQL Server table into a data file. The bcp utility is accessed by the bcp command. The bcp utility can export data from a SQL Server table to a data file for use in other programs. The bcp command provides switches that you use to specify the data type of the data file and other information. For a description of the bcp command syntax, see bcp Utility.
swfk-es - Snake Wrangling for Kids (Edición en Español) "Snake Wrangling for Kids" es un libro electrónico para niños de 8 o más años que quieran aprender a programar. Cubre lo básico de la programación utilizando el lenguaje de programación Python 3 como base para aprender los conceptos. La versión original en inglés ha sido escrita por Jason R. Briggs y puede accederse en swfk. La versión en español está realizada a partir de la versión 0.7.7 inglesa que utiliza Python 3. El libro lo está leyendo actualmente mi hijo de 9 años que me está sirviendo de test sobre la claridad de las explicaciones. Si descargas este libro (sección Downloads) puedes ponerte en contacto con conmigo José Miguel González para comunicar erratas o mejoras posibles. Actualmente estoy traduciendo el libro de Mark Pilgrim Dive into Python 3. Gracias.
Gothic Architecture Pictures All text and pictures © QT Luong. See conditions for use of pictures. There are 28 pictures on this page out of 228 pictures of Gothic Architecture. Why the future of work is play - TNW Industry Is this what you look like right now? You’re not alone. But it doesn’t have to be like that. On Friday at the annual PSFK conference in New York City, Founding Partner and CEO of Undercurrent, a digital strategy firm and author of Game Frame Aaron Dignan took the stage to discuss why the future of work is play. For years, society has polarized “play” and “work,” associating the former with laziness and the latter with grave importance. “There’s a clear difference in emotion, sensation and engagement when people are engaged in gaming because it’s rich in structure and there’s a reward. Why aren’t people doing what they want to do and why aren’t they engaged at work? Real life is full of unstructured spaces and in contrast, games are incredibly structured experiences. Why? “If you’re not playing you’re not learning,” says Dignan. This weekend, my parents picked me up from the train station in Boston. In the U.S., there have been 27.2 millions units sold of the Wii.
clumsy, an utility for simulating broken network for Windows Vista / Windows 7 and above Releases Notice: clumsy only support Windows Vista, Windows 7 and above. 64bit Windows users are strongly recommanded to download the 64bit build. 32bit: clumsy-0.1-win32.zip (MD5:b8eb28c399f15f02112f5461f6465153) 64bit: clumsy-0.1-win64.zip (MD5:e75419e28321cdc2cb4ca6f9e4044fd0) Install Extract downloaded zip file to arbitrary directory and execute clumsy.exe. clumsy is alpha quality software and does have some gotchas. Be sure to read the manual page before using it. Build If you have Visual Studio 2012 or TDM-GCC 4.8.1 installed then building is rather easy. Clone the repository. git clone premake4 vs2010 premake4 gmake If you choose to build using VS2012, remember the runtime MUST be dynamically linked. mingw32-make -C build CC=gcc config=debug32 mingw32-make -C build CC=gcc config=debug64 mingw32-make -C build CC=gcc config=release32 mingw32-make -C build CC=gcc config=release64 Acknowledgements Here's a list of things used to build clumsy. License
Kidsruby.com Bicycle Maintenance Guide and Riding Tips This page was last updated 24 May 2007. I often get asked about bicycle maintenance and repairs, and tips for how to ride efficiently. This little manual is intended as a summary of what I have learned over the years. Global Pulse Twitter is a remarkable tool to analyze information diffusion, and investigate social patterns and trends. In June 2011, Abdur Chowdhury and his team at Twitter posted a few visualization experiments covering the volume and worldwide scale of Twitter messages during the devastating earthquake in Japan on March 11. As they stated on the original post: "During major events, people use Twitter to share news and thoughts with friends, family and followers around the world. To better understand this diffusion process, Abdur and his team created two video clips. The second one is from a clip displaying worldwide retweets of Tweets originating in Japan for one hour after the earthquake.