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• Structure vs. programming

  - by ChristopherW

  Is it bad that I often find myself spending more time on program structure than actually writing code inside methods? Is this common? I feel I spend more time laying the foundation than actually building the house (metaphorically). While I understand that without a good foundation the house will cave in, but does it legitimately need to take half of the project to finalize code structure? I understand design patterns, and I know where to go if I need help on choosing one, but often I find myself doubting my own choices.

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• Google I/O 2012 - Fast UIs for the Cross-Device Web

  Google I/O 2012 - Fast UIs for the Cross-Device Web Boris Smus One of the great features of the modern web is that sites work on any device with a browser. This session will focus on creating UIs for the cross-device web. We will cover building web sites that support multiple device form factors (responsive and non-responsive approaches), discuss single page sites and some of the layout features in modern mobile browsers, and do a deep dive into multi-touch input on the web. Finally, we'll show some of the awesome new mobile debugging tools in Chrome and Chrome for Android. For all I/O 2012 sessions, go to developers.google.com From: GoogleDevelopers Views: 105 3 ratings Time: 49:31 More in Science & Technology

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• Google I/O 2012 - Gaming in the Cloud

  Google I/O 2012 - Gaming in the Cloud "Fred Sauer Many games developers are finding the easy development and deployment experience of Google App Engine ideal for building cloud based state-storage, matching making services and collaborations services. When you have a hit game, the last thing you want to do is worry about your server provisioning. App Engine has an always-free tier to get you started and then scales seamlessly to any size of usage. Game developers also use Google Cloud Storage to easily store and quickly deliver media files to clients around the world. For all I/O 2012 sessions, go to developers.google.com From: GoogleDevelopers Views: 1 0 ratings Time: 01:02:17 More in Science & Technology

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• How to create email request forms and auto-responder?

  - by mfc

  I'm building a site in css and I'm pretty new to any code or script other than html and css. I'm trying to create a landing page that requires an email from visitors and set up an auto responder to send to that newly submitted email. This would also be a signup for email newsletters. I have some idea how to create the form and have looked into a bit. I don't know how to make it a requirement to get past the landing page and into the actual website or set up the auto-responder. Any help would be much appreciated. Or if someone knows of a source that explains how to do this thing in particular it would be wonderful. I tried lynda.com but everything is so general and I can't seem to find info on exactly how to do this but I know its quite common. Thanks!

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• Cinnamon install problem ubuntu 12.04

  - by Kin.

  I was following the How do I install the Cinnamon Desktop?, but when i install, it like this locahost@locahost:~$ sudo apt-get install cinnamon Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: cinnamon : Depends: libgjs0- E: Unable to correct problems, you have held broken packages. How can i install the libgjs0- package?

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• Force install apt-get

  - by Web Developer

  I tried installing beanstalkd with sudo apt-get install beanstalkd (also with -f option) and I get the following error: Reading package lists... Done Building dependency tree Reading state information... Done You might want to run `apt-get -f install' to correct these: The following packages have unmet dependencies: beanstalkd: Depends: libevent-1.4-2 (>= 1.4.13-stable) but it is not going to be installed mysql-server-5.1: Depends: mysql-client-5.1 (>= 5.1.62-0ubuntu0.10.04.1) but it is not going to be installed Depends: libmysqlclient16 (>= 5.1.21-1) but it is not going to be installed Depends: mysql-server-core-5.1 (>= 5.1.62-0ubuntu0.10.04.1) but it is not going to be installed PreDepends: mysql-common (>= 5.1.62-0ubuntu0.10.04.1) but it is not going to be installed E: Unmet dependencies. Try 'apt-get -f install' with no packages (or specify a solution).

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• Inexpensive generation of hierarchical unique IDs

  - by romaninsh

  My application is building a hierarchical structure like this: root = { 'id': 'root', 'children': [ { 'name': 'root_foo', 'children': [] }, { 'id': 'root_foo2', 'children': [ { 'id': 'root_foo2_bar', 'children': [] } ] } ] } in other words, it's a tree of nodes, where each node might have child elements and unique identifier I call "id". When a new child is added, I need to generate a unique identifier for it, however I have two problems: identifiers are getting too long adding many children takes slower, as I need to find first available id My requirement is: naming of a child X must be determined only from the state in their ancestors When I re-generate tree with same contents, the IDs must be same or in other words, when we have nodes A and B, creating child in A, must not affect the name given to children of B. I know that one way to optimize would be to introduce counter in each node and append it to the names which will solve my performance issue, but will not address the issue with the "long identifiers". Could you suggest me the algorithm for quickly coming up with new IDs?

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• Designing call center applications, what to consider.

  - by Espen Schulstad

  We have customers calling in to place orders. What sort of considerations should I make when building a call center application. Speed is a factor here. We had a powerbuilder application that was extremly fast for a trained user. We want to have the same sort of speed in our new production system. So some thoughts I've made are: Hotkeys are important. Is it faster to use a "wizard", step by step, or should I try to place everything important about the order logically on one sceen and have another screen where you do all searches, pertinent for that order?

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• Optimization of a Hybrid Pagination Scheme

  - by Kaustubh Karkare

  I'm working on a Web Application using node.js in which I'm building a partial copy of the database on the client-side to decrease the load on my server. Right now, I have a function like this (expressed as python-style pseudocode, but implemented in JavaScript): get(table_name,primary_key): if primary_key in cache[table_name]: return cache[table_name][primary_key] else: x = get_data_from_server(table_name,primary_key) # socket.io return cache[table_name][primary_key] = x While this scheme works perfectly well for caching individual rows, I'd like to extend it to support the creation of paginated tables ordered according to the primary_key, and loading additional data using the above function for only the current and possibly the adjacent pages. Now, I don't want to keep the list of primary keys on the server to be retrieved every time I need to change the page (which, for reasons beyond the scope here, will be very frequent), and keeping it on the client side, subject to real-time create/delete events from the server, doesn't seem that good an idea, even after compression (using ranges, instead of individual values). What is the best way to calculate which items are to be displayed on a random page, minimizing the space requirements & the need for communication with the server?

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• How best to take a users signature online? (UK law orientated) [closed]

  - by Ben Griffiths

  Not sure if this is the best place to ask, but I can't seem to find any of the other SE sites that would fit better (unless there's a law one?) I'm building an application that will replace an existing paper based form, and this form would normally be signed by the person filling it in. Looking around, it's hard to find a good definitive resource to explain what I can and cannot accept as far as a signature goes. It looks like some UK government online forms accept just your name typed into a box, but I've also heard you should back up with an email - so that process would be type name into a box along with providing an email address, send out an email, then make them click a link within the email to finally complete the verification. Involving email seems very long winded and leaves the system open to spam filters blocking emails, forgotten emails that just sit in inbox's etc. So, does anyone have any knowledge in this department? Personally, I'd love to just get them to type their name into a box and be done with it!

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• Is there a limit of emails/pictures per Gravatar account?

  - by Steve Taylor

  I'm building a site to connect patients to doctors. Each doctor will have a profile picture. I'm quite happy to manually maintain the profile pictures as there won't be that many doctors nor will they have a need to change their picture very often, if at all. I thought of using Gravatar to host all these profile pictures. The idea is to create a single Gravatar account then keep adding email addresses to it in the form [email protected] and associating each one with a new image. Does anyone know, however, if I will run into any per-account limit? If so, it wouldn't be feasible because I would end up with a bunch of Gravatar accounts instead of just the one.

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• How Uranium Refinement Works [Video]

  - by Jason Fitzpatrick

  While building a nuclear weapon is a complex task in and of itself, the most difficult part is refining uranium. In this informative video, Bill Hammack explains. Weapons and power plants require uranium that contains a greater amount of the isotope uranium-235 than found in natural uranium, which is mostly uranium-238. He outlines the key difficulty in separating the two isotope: They have nearly identical properties. He explains the two key methods for separation: Gas diffusion and centrifuges. What Keeps Nuclear Weapons from Proliferating HTG Explains: What Is Two-Factor Authentication and Should I Be Using It? HTG Explains: What Is Windows RT and What Does It Mean To Me? HTG Explains: How Windows 8′s Secure Boot Feature Works & What It Means for Linux

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• Job selection between (.net) or PHP [closed]

  - by Swapnil Gondkar

  Hi am Swapnil I am just a fresher passout of 2011 batch of engineering from Mumbai University I have developed dynamic websites on PHP and have quite a good experience working with php for 2years. Now When I went for interviews I got selected for a company that manifolds into PHP and its technologies to create websites.The other company in which I also got selected offers more than half the higher package than previous but I have to work here on .net platform and all the Microsoft Technologies which I do not merry. The work environment of php company is quite cool with 400employees(onli 10 php developers) and the .net company has only a strength of 20employees Now the thing is I do not know about Enterprise Application Building and other stuff so guys If any advice that may help me select my job would be appreciated.

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• Making it myself vs. modifying someone else's code as a beginner

  - by JamesGold

  I just started getting into open source projects mainly for the learning experience. I've made a few tiny contributions to some small projects. Most of my time has been spent just reading over other people's code and trying to understand how it works. Often times I find myself frustrated by a lack of documentation and unit tests. There are also times where I think I can see a more intuitive solution to a problem, but implementing it would require large restructuring of code. I see all this and wonder to myself why I don't just start clean on the whole thing by myself and do things "the right way"? I'd also enjoy the experience of building it from scratch, as it would force me to learn skills that I might not learn by working on other people's code. On the other hand, working on other people's code is also a great experience because it requires me to understand and work with other people's code and collaborate with them. It's just harder, IMO. Thoughts?

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• NZ Herald/ Yahoo Daily Deals Delivered via Web Slices in IE8

  Recently I have been having a lot of fun building a competition Slice of Kevin intended in part to teach people about Web Slices in New Zealand. The competition has been very successful and has created a loyal group of users. Since launch 2 months ago we have had 26,843 users of the slice. Each of those users have spent on average 4.1 hrs each engaged inside the web slice over that time. We also reached out through social media and found that facebook worked as a perfect companion to the Web Slice...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Google I/O Sandbox Case Study: CNBC

  Google I/O Sandbox Case Study: CNBC We interviewed CNBC at the Google I/O Sandbox on May 11, 2011. They explained to us the benefits of building apps for the Google TV platform. CNBC's Real-Time Finance App is now available on Google TV, in addition to Android. Now consumers can access the same real-time stock information about the companies they are interested in from their living room. For more information about developing on Google TV, visit: code.google.com For more information on CNBC, visit: www.cnbc.com From: GoogleDevelopers Views: 22 0 ratings Time: 02:06 More in Science & Technology

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• Passing data between engine layers

  - by spaceOwl

  I am building a software system (game engine with networking support ) that is made up of (roughly) these layers: Game Layer Messaging Layer Networking Layer Game related data is passed to the messaging layer (this could be anything that is game specific), where they are to be converted to network specific messages (which are then serialized to byte arrays). I'm looking for a way to be able to convert "game" data into "network" data, such that no strong coupling between these layers will exist. As it looks now, the Messaging layer sits between both layers (game and network) and "knows" both of them (it contains Converter objects that know how to translate between data objects of both layers back and forth). I am not sure this is the best solution. Is there a good design for passing objects between layers? I'd like to learn more about the different options.

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• Images from remote source - is it possible or is it bad practice?

  - by user1620696

  I'm building a management system for websites and I had an idea related to image galleries. I'm not sure it's a good approach. Since image space needed is related to how many images a user might upload, I thought about using cloud services like DropBox, Mega, and Google Drive to store images and load then when needed. The obvious problem with this approach is that downloading the images from the 3rd party service would hamper the user experience due to the increased download times. Is there any way to save images belonging in an image gallery on remote source without hampering the user experience because of speed? Or is this approach really not a good practice?

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• Wine dependencies

  - by user206923

  Hello I am new here and I have been trying to install wine: $ sudo apt-get install wine1.7 Reading package lists... Done Building dependency tree Reading state information... Done Some packages could not be installed. This may mean that you have requested an impossible situation or if you are using the unstable distribution that some required packages have not yet been created or been moved out of Incoming. The following information may help to resolve the situation: The following packages have unmet dependencies: wine1.7 : Depends: wine1.7-i386 (= 1.7.4-0ubuntu4) but it is not installable E: Unable to correct problems, you have held broken packages. what should i do ?

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• Introducing Task-It. A real-world application using RadControls for Silverlight 4

  This is the first in a series of blog posts based around an application called Task-It that I have developed in Silverlight 4. Task-It is real-world application designed for people that need a simple way to manage the numerous tasks that we all strive to accomplish on a daily basis. Figure 1: Task-It Tasks page Figure 2: Task-It Dashboard page I have developed this application for several reasons: There are many task management applications out there, and I have used quite a few of them, but I havent found one that really grabbed me. Many of these applications had their strong points,but some were overly complex, some lacked key features, some cost too much money, and so forth. I thought it would be nice to identify the best parts of each, and take my stab at building my own. During my evaluation of task management applications, I have not yet ...Did you know that DotNetSlackers also publishes .net articles written by top known .net Authors? We already have over 80 articles in several categories including Silverlight. Take a look: here.

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• Oracle Developer Day, Warsaw, March 28th 2012

  - by Ruxandra Radulescu

  Java doesn't begin and end with the server – Java is everywhere. From servers and desktop applications to mobile devices, wireless sensors, smart cards, and TVs, Java is the world's most widely used software development language and platform - the choice of more than 9 million developers worldwide. Learn how Java technology can enrich your development experience at this one day event, on 28th of March 2012 in Warsaw. This event is designed for developers, project managers and architects interested in: Java EE 6 Java FX Java Web Services Oracle ADF and Weblogic Server Oracle SOA, BPM and BAM Network with peers, see cutting edge demonstrations from Oracle experts, and code your way through demo workshops. Here are some interesting hands-on sessions from the agenda: - Rapid Java EE 6 Application Development - What's New in NetBeans IDE 7.1? - Getting Started with Pluggable Desktop Development - Supercharge your productivity in Building Applications with Oracle ADF - Live Demo - Charting with ADF Data Visualization Components - Managing Auctions with Oracle SOA Suite -Live Demo  Register Now

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• Unleash the Power of JavaFX

  - by Angela Caicedo

  It seems that it was just yesterday that we were getting ready for JavaOne 2012.  Now it's over, but it's definitely a great time to go back and watch the sessions you missed, and learn some of the latest news about Java.   For this JavaOne, I presented two sessions and one HOL, all of them related to JavaFX: JavaFX Extreme GUI Makeover Building JavaFX Interfaces with the Real World Unleash the power of JavaFX If you couldn't join us for these sessions, just follow the links and you can watch the videos on demand. For the HOL I've created a repository at GitHub, as many of the attendees wanted to keep the material.   In this repository you can find the lab document, the NetBeans projects for each exercise and it's appropriate solution.  Hope you enjoy! I created and presented a HOL called:  Unleash the power of JavaFX.  In this blog entry I would like to provide you 

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• New York City In LEGO Bricks

  - by Jason Fitzpatrick

  How can you capture all of New York City in LEGO? With a creative mind and the right data. Rather than recreate buildings in detail, designer JR Schimdt used an elevation map of the city and surrounding area to build stacks of LEGO scaled to the city’s building topography. The end result is an eye catching 3D rendition of NYC. Hit up the link below to grab a larger copy. LEGO New York [via Neatorma] How To Delete, Move, or Rename Locked Files in Windows HTG Explains: Why Screen Savers Are No Longer Necessary 6 Ways Windows 8 Is More Secure Than Windows 7

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• Protecting design ideas from being copied by other websites?

  - by mickburkejnr

  Hi everyone, I'm planning a project at the moment, while building a completely different project at the same time. Both of these projects are quite innovative in the way they either work or the way they are presented. One of the projects hasn't been done before, and the other is being made has competition, but I feel the competitions websites are light years behind what I'm doing. Is there a way for me to prevent the way my sites work or presented from being stolen? I've thought of patenting parts of them, but it requires £10,000 and I don't have that amount of money. Also, would me putting a Copyright notice on the site or an All Rights Reserved tag give me any muscle when going to websites that I feel have stolen my ideas (if they have)? Cheers!

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• Microsoft Deal of the Day - 19/June/2012 - HTML5 Step by Step

  - by TATWORTH

  At http://shop.oreilly.com/product/0790145302083.do?code=MSDEAL, Microsoft Press are offering the HTML5 Step by Step e-book at 50% off."Experience learning made easy—and quickly teach yourself how to create Web pages with the HTML5 specification. With Step by Step, you set the pace—building and practicing the skills you need, just when you need them! Use a division-based layout to structure your Web pagesInclude menu bars and hyperlinks for clear navigationApply colors, font sizes, and other formatting with CSSAdd graphics, sound, and video to your pagesUse the Canvas tag to render visual images on the flyBuild user-input forms with buttons, boxes, and menus"

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