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  • How do we keep dependent data structures up to date?

    - by Geo
    Suppose you have a parse tree, an abstract syntax tree, and a control flow graph, each one logically derived from the one before. In principle it is easy to construct each graph given the parse tree, but how can we manage the complexity of updating the graphs when the parse tree is modified? We know exactly how the tree has been modified, but how can the change be propagated to the other trees in a way that doesn't become difficult to manage? Naturally the dependent graph can be updated by simply reconstructing it from scratch every time the first graph changes, but then there would be no way of knowing the details of the changes in the dependent graph. I currently have four ways to attempt to solve this problem, but each one has difficulties. Nodes of the dependent tree each observe the relevant nodes of the original tree, updating themselves and the observer lists of original tree nodes as necessary. The conceptual complexity of this can become daunting. Each node of the original tree has a list of the dependent tree nodes that specifically depend upon it, and when the node changes it sets a flag on the dependent nodes to mark them as dirty, including the parents of the dependent nodes all the way down to the root. After each change we run an algorithm that is much like the algorithm for constructing the dependent graph from scratch, but it skips over any clean node and reconstructs each dirty node, keeping track of whether the reconstructed node is actually different from the dirty node. This can also get tricky. We can represent the logical connection between the original graph and the dependent graph as a data structure, like a list of constraints, perhaps designed using a declarative language. When the original graph changes we need only scan the list to discover which constraints are violated and how the dependent tree needs to change to correct the violation, all encoded as data. We can reconstruct the dependent graph from scratch as though there were no existing dependent graph, and then compare the existing graph and the new graph to discover how it has changed. I'm sure this is the easiest way because I know there are algorithms available for detecting differences, but they are all quite computationally expensive and in principle it seems unnecessary so I'm deliberately avoiding this option. What is the right way to deal with these sorts of problems? Surely there must be a design pattern that makes this whole thing almost easy. It would be nice to have a good solution for every problem of this general description. Does this class of problem have a name?

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  • Simple 3D games to make for learning 3D game development (Unity)

    - by Vandell
    I have some experience doing 2D games. But I struggle so much doing anything in Unity, so I'´ve decided to make some simple 3D games as a way to learn this 'new dimension' in game development but I'm having a hard time choosing games to clone (a task that's relatively easy to do for 2D). What games should a 2D developer make to break in 3D and why? I'd like also note that I have no problem with the scripting languages.

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  • Brasero Burns Data, Not Time - or Piles of Discs

    <b>Linux Insider:</b> "There are a lot of CD/DVD burners for Linux out there, but Brasero stands out as a straightforward, easy-to-use, burner that has some nice extra features but won't make you relearn a lot of complex commands if you only use it occasionally. One nicety is the option to start a burn project and finish it much later, even if you're not using a rewritable disc."

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  • Files and content search outside from opened Visual Studio solution

    - by Suresh Behera
    I have been using Visual studio for decade now and never notice a useful search option on “Find and Replace”  wizard.One of my client still use Windows XP for their development machine.We have set of projects separated to specific group or solutions. So,i always have challenge to find some contents or files other than current opened solutions.On windows 7 it is easier go folder and look for content but not so easy on windows XP.Following “Find and Replace” and content search found very helpful...(read more)

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  • Profiling SharePoint with ANTS Performance Profiler 5.2

    Using ANTS Performance Profiler with SharePoint has, previously, been possible, but not easy. Version 5.2 of ANTS Performance Profiler changes all that, and Chris Allen has put together a straight-forward guide to profiling SharePoint, demonstrating just how much easier it has become.

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  • Installing ubuntuone

    - by bob
    Linux Mint 14 os I have tried to install ubuntu one onto the linux mint 14 through Synaptic package manager and software manager, both say its installed but when I go to find the programme its not there. installed as what Synaptic says........... ubuntuone client, ubuntuone client data, ubuntuone client gnome, ubuntuone control panel, what else is missing from this list please, it used to be so so easy to install but now, eeeek yours in advance Bob

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  • Puppet: Getting Started On Windows

    - by Robz / Fervent Coder
    Originally posted on: http://geekswithblogs.net/robz/archive/2014/08/07/puppet-getting-started-on-windows.aspxNow that we’ve talked a little about Puppet. Let’s see how easy it is to get started. Install Puppet Let’s get Puppet Installed. There are two ways to do that: With Chocolatey: Open an administrative/elevated command shell and type: choco install puppet Download and install Puppet manually - http://puppetlabs.com/misc/download-options Run Puppet Let’s make pasting into a console window work with Control + V (like it should): choco install wincommandpaste If you have a cmd.exe command shell open, (and chocolatey installed) type: RefreshEnv The previous command will refresh your environment variables, ala Chocolatey v0.9.8.24+. If you were running PowerShell, there isn’t yet a refreshenv for you (one is coming though!). If you have to restart your CLI (command line interface) session or you installed Puppet manually open an administrative/elevated command shell and type: puppet resource user Output should look similar to a few of these: user { 'Administrator': ensure => 'present', comment => 'Built-in account for administering the computer/domain', groups => ['Administrators'], uid => 'S-1-5-21-some-numbers-yo-500', } Let's create a user: puppet apply -e "user {'bobbytables_123': ensure => present, groups => ['Users'], }" Relevant output should look like: Notice: /Stage[main]/Main/User[bobbytables_123]/ensure: created Run the 'puppet resource user' command again. Note the user we created is there! Let’s clean up after ourselves and remove that user we just created: puppet apply -e "user {'bobbytables_123': ensure => absent, }" Relevant output should look like: Notice: /Stage[main]/Main/User[bobbytables_123]/ensure: removed Run the 'puppet resource user' command one last time. Note we just removed a user! Conclusion You just did some configuration management /system administration. Welcome to the new world of awesome! Puppet is super easy to get started with. This is a taste so you can start seeing the power of automation and where you can go with it. We haven’t talked about resources, manifests (scripts), best practices and all of that yet. Next we are going to start to get into more extensive things with Puppet. Next time we’ll walk through getting a Vagrant environment up and running. That way we can do some crazier stuff and when we are done, we can just clean it up quickly.

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  • Why CoffeeScript is tough to maintain

    - by Renso
    I recently started trying out CoffeeScript only to find out that it caused more headaches. The abstraction level of jQuery was perfect, it did not dictate to coders how to design their code, it just works. However, I recently posted a request to the CoffeeScript team to consider introducing curly braces to help with more complex code to control the flow of logic. For example a if-then-else with many nested levels can be near impossible to debug without tracing through it when using CoffeeScript. Also with IDEs like Visual Studio, regular JavaScript intellicense and auto-formatting make it easy to appropriate indent nested levels without any work on the part of the developer and reading it is not that hard, especially with some extensions that show vertical lines in the code editor to help see what is nested within what part of the code.However with CoffeeScript that is not the case. The samples given in the CoffeeScript web site are of course just simple examples to explain the features and one gets excited pretty quick over the powerful shortcuts. I tried to convert a piece of JavaScript over to CoffeeScript and gave up since you need to first of all remove ALL non CoffeeScript coding constructs for it to even compile. However js2coffee can help with that. However to keep track of nested levels became something that was simply not manageable using CoffeeScript.Furthermore, any coding language that controls the flow of logic by indentation is extremely dangerous for obvious reasons. I liked CoffeeScript a lot, but the fact that the logical flow of the code is controlled by how much you indent code, spaces or tabs, is not reliable as there is no way the programmer has an easy way of knowing what parts of the code will get hit when the code spans a page.When I suggested introducing curly braces in CoffeeScript the team, one contributor advised me that my code needs to be re-designed! Needless to say that is absurd. When I included a piece of the code he asked my if it was legacy code. It's like saying to a Java programmer, sorry you cannot use Java because we don't agree with how you write your code.jashkenas from the CoffeeScript blog gave some great suggestions and made the point that introducing curly braces would be very problematic for them as they use them to denote objects. Makes sense, but I would still love to see some way to replace code flow control with spaces and indentation to something more concrete and human readable.

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  • Unable to install osspd

    - by crom
    I try to install osspd, but I get the message that I need the library lib6c = 2.17 I tried to install it by: apt-get install osspd http://sourceforge.net/projects/osspd/ http://www.ubuntuupdates.org/package/core/raring/universe/base/osspd apt-cache policy osspd N: Unable to locate package osspd version: cat /proc/version Linux version 3.5.0-34-generic (buildd@roseapple) (gcc version 4.6.3 (Ubuntu/Linaro 4.6.3-1ubuntu5) ) #55~precise1-Ubuntu SMP Fri Jun 7 16:25:50 UTC 2013 All with the same result. not easy to backport to 12.10 LTS??!!

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  • Turning Supply Data Into Savings- (Almost) Everything You Need to Know in 12 Minutes

    - by David Hope-Ross
    Strategic sourcing and supplier management analytics are easy. The hard part is getting reliable data that provide an accurate record of suppliers, spend, invoices, expenses, and so on. In this new AppsCast, e-Three’s Amy Joshi provides an extraordinarily cogent explanation of key challenges, technologies, and tactics for improving spend visibility. Take twelve minutes to listen and learn. The techniques that Amy outlines can add millions to your organization’s bottom line.

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  • Blog Commenting - Is it Really Useful in SEO?

    The easy answer to the question is, yes, blog commenting is incredibly useful as pertains to your internet search engine optimization. The relevant question is how is it useful? Furthermore, how can you make sure that anyone commenting on a blog that is related to a service that you provide give you the traffic you deserve?

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  • CodePlex Daily Summary for Monday, May 26, 2014

    CodePlex Daily Summary for Monday, May 26, 2014Popular ReleasesClosedXML - The easy way to OpenXML: ClosedXML 0.71.1: More performance improvements. It's faster and consumes less memory.Role Based Views in Microsoft Dynamics CRM 2011: Role Based Views in CRM 2011 and 2013 - 1.1.0.0: Issues fixed in this build: 1. Works for CRM 2013 2. Lookup view not getting blockedSimCityPak: SimCityPak 0.3.1.0: Main New Features: Fixed Importing of Instance Names (get rid of the Dutch translations) Added advanced editor for Decal Dictionaries Added possibility to import .PNG to generate new decals Added advanced editor for Path display entriesSimple Connect To Db: SimpleConnectToDb_v1: SimpleConnectToDb_v1CRM 2011 / CRM 2013 Form Helper: v2014.05.25: v2014.05.25 Added PhoneFormat & PhoneFormatAreaCode v2014.05.24 Initial ReleaseCreate Word documents without MS Word: Release 3.0: Add support for Sections, Sections Headers and Footers and right to left languages.Corporate News App for SharePoint 2013: CorporateNewsApp v1.6.2.0: Important note This version contains a major bug fix about the generic error "Request failed. Unexpected response data from server null" This error occurs on SharePoint Online only, following an update of the Javascript API after May 2014. If you have installed this application manually in your applications company catalog, you can download the CorporateNewsApp.app file in the zip archive and update it manually. If you have installed this application directly from the SharePoint Store, it ...DevOS: DevOS: Plugin-system added Including:DevOS.exe DevOS API.dll Files must be in the some folderTiny Deduplicator: Tiny Deduplicator 1.0.1.0: Increased version number to 1.0.1.0 Moved all options to a separate 'Options' dialog window. Allows the user to specify a selection strategy which will help when dealing with large numbers of duplicate files. Available options are "None," "Keep First," and "Keep Last"C64 Studio: 3.5: Add: BASIC renumber function Add: !PET pseudo op Add: elseif for !if, } else { pseudo op Add: !TRACE pseudo op Add: Watches are saved/restored with a solution Add: Ctrl-A works now in export assembly controls Add: Preliminary graphic import dialog (not fully functional yet) Add: range and block selection in sprite/charset editor (Shift-Click = range, Alt-Click = block) Fix: Expression evaluator could miscalculate when both division and multiplication were in an expression without parenthesisSEToolbox: SEToolbox 01.031.009 Release 1: Added mirroring of ConveyorTubeCurved. Updated Ship cube rotation to rotate ship back to original location (cubes are reoriented but ship appears no different to outsider), and to rotate Grouped items. Repair now fixes the loss of Grouped controls due to changes in Space Engineers 01.030. Added export asteroids. Rejoin ships will merge grouping and conveyor systems (even though broken ships currently only maintain the Grouping on one part of the ship). Installation of this version wi...Player Framework by Microsoft: Player Framework for Windows and WP v2.0: Support for new Universal and Windows Phone 8.1 projects for both Xaml and JavaScript projects. See a detailed list of improvements, breaking changes and a general overview of version 2 ADDITIONAL DOWNLOADSSmooth Streaming Client SDK for Windows 8 Applications Smooth Streaming Client SDK for Windows 8.1 Applications Smooth Streaming Client SDK for Windows Phone 8.1 Applications Microsoft PlayReady Client SDK for Windows 8 Applications Microsoft PlayReady Client SDK for Windows 8.1 Applicat...TerraMap (Terraria World Map Viewer): TerraMap 1.0.6: Added support for the new Terraria v1.2.4 update. New items, walls, and tiles Added the ability to select multiple highlighted block types. Added a dynamic, interactive highlight opacity slider, making it easier to find highlighted tiles with dark colors (and fixed blurriness from 1.0.5 alpha). Added ability to find Enchanted Swords (in the stone) and Water Bolt books Fixed Issue 35206: Hightlight/Find doesn't work for Demon Altars Fixed finding Demon Hearts/Shadow Orbs Fixed inst...DotNet.Highcharts: DotNet.Highcharts 4.0 with Examples: DotNet.Highcharts 4.0 Tested and adapted to the latest version of Highcharts 4.0.1 Added new chart type: Heatmap Added new type PointPlacement which represents enumeration or number for the padding of the X axis. Changed target framework from .NET Framework 4 to .NET Framework 4.5. Closed issues: 974: Add 'overflow' property to PlotOptionsColumnDataLabels class 997: Split container from JS 1006: Series/Categories with numeric names don't render DotNet.Highcharts.Samples Updated s...ConEmu - Windows console with tabs: ConEmu 140523 [Alpha]: ConEmu - developer build x86 and x64 versions. Written in C++, no additional packages required. Run "ConEmu.exe" or "ConEmu64.exe". Some useful information you may found: http://superuser.com/questions/tagged/conemu http://code.google.com/p/conemu-maximus5/wiki/ConEmuFAQ http://code.google.com/p/conemu-maximus5/wiki/TableOfContents If you want to use ConEmu in portable mode, just create empty "ConEmu.xml" file near to "ConEmu.exe" Aspose for Apache POI: Missing Features of Apache POI SL - v 1.1: Release contain the Missing Features in Apache POI SL SDK in Comparison with Aspose.Slides for dealing with Microsoft Power Point. What's New ?Following Examples: Managing Slide Transitions Manage Smart Art Adding Media Player Adding Audio Frame to Slide Feedback and Suggestions Many more examples are yet to come here. Keep visiting us. Raise your queries and suggest more examples via Aspose Forums or via this social coding site.PowerShell App Deployment Toolkit: PowerShell App Deployment Toolkit v3.1.3: Added CompressLogs option to the config file. Each Install / Uninstall creates a timestamped zip file with all MSI and PSAppDeployToolkit logs contained within Added variable expansion to all paths in the configuration file Added documentation for each of the Toolkit internal variables that can be used Changed Install-MSUpdates to continue if any errors are encountered when installing updates Implement /Force parameter on Update-GroupPolicy (ensure that any logoff message is ignored) ...WordMat: WordMat v. 1.07: A quick fix because scientific notation was broken in v. 1.06 read more at http://wordmat.blogspot.com????: 《????》: 《????》(c???)??“????”???????,???????????????C?????????。???????,???????????????????????. ??????????????????????????????????;????????????????????????????。Mini SQL Query: Mini SQL Query (1.0.72.457): Apologies for the previous update! FK issue fixed and also a template data cache issue.New ProjectsASP.Net MCV4 Simplified Code Samples: This project intended to simplify the same. In this project each task is implemented with minimum lines of code to reduces complicity.Calvin: net???CodeLatino by Latinosoft: A Modified version for codeShow -- Probably taking more than a month.freeasyBackup: A free and easy to use Backup Tool for everyone. Without any cloud restrictions. freeasyExplorer: A free and easy to use File Explorer for everyone.openPDFspeedreader: #spritz #pdfreader #speedreader PDF Editor to Edit PDF Files in your ASP.NET Applications: This sample application allows the users to edit PDF files online using Aspose.Pdf for .NET.SharePoint World Cup 2013: world cup 2014SSAS Long Running Query Performance Helper: This utility helps investigate long running multidimensional or mining queries in discovery, de-parameterization and re-parameterization back to source format.

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  • Erlang web frameworks survey

    - by Zachary K
    (Inspired by similar question on Haskel) There are several web frameworks for Erlang like Nitrogen, Chicago Boss, and Zotonic, and a few more. In what aspects do they differ from each other? For example: features (e.g. server only, or also client scripting, easy support for different kinds of database) maturity (e.g. stability, documentation quality) scalability (e.g. performance, handy abstraction) main targets Also, what are examples of real-world sites / web apps using these frameworks?

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  • What does it take to successfully run a URL shortener service [on hold]

    - by MxyL
    What are the costs (technology wise) for running a URL shortener service such as bit.ly or anonym.to? For example, if I decided to use an inexpensive shared hosting with "unlimited" bandwidth, would that be feasible? Or would I need a dedicated hosting? I found this question: I want to run a URL shortener for my own usage, what do I need to do?, which makes it easy to set it up, but I'm not too clear what kind of things I need to consider.

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  • Hugin Panorama Creator Software for Linux

    <b>Tech Source:</b> "I've been looking for a Panorama creator application for my Linux box and bumped into Hugin. It's a free and open-source graphical user interface (GUI) for Panorama tools that's simple, easy-to-use, and gets the job done."

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  • SQLAuthority News Win MS Office License Last 2 days

    Just a note for everybody who is from India and want to win FREE Office License, participate in very easy contest here. SQLAuthority News Virtual Launch Event for Office 2010 Contest Win MS Office License Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, [...]...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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  • SSRS In a Flash

    Learn the basics of Reporting Services, what it is, and what it can do from you. From MVP Jessica Moss, we have a new series that can help you get started with this part of SQL Server. SQL Server monitoring made easy "Keeping an eye on our many SQL Server instances is much easier with SQL Response." Mike Lile.Download a free trial of SQL Response now.

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  • SQL Server is now supported by phpBB!

    - by The Official Microsoft IIS Site
    Our team is really excited to announce the new release of phpBB 3.0.7-PL1 by the phpBB community that supports SQL Server, and one can download it from the Web Application Gallery for a very easy install!! But let’s step back for a moment and provide some background. Microsoft’s Interoperability team has been working with a few PHP projects to support SQL Server using our driver, phpBB was one of them. Although phpBB already had some support for SQL Server / Access, our 1.1 release driver offered...(read more)

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  • 5 Must-Ask Questions For Your Business Website Developer

    The wrong way to hire a website developer is to use a directory. The right way is to use recommendations from people you know, or even that you don't know - by writing them email and explaining that you love their site design - and asking who did it and whether the developer was easy to work with.

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  • Seven SEO Mistakes to Avoid

    SEO seems relatively easy at first, but danger lurks around every corner. One false step and all of your SEO work vanishes into a de-indexing or the dreaded Google sandbox. In this article, we'll explore the seven SEO mistakes to avoid.

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  • Enjoy a Refreshing Desktop the Waterfalls Theme for Windows 7

    - by Asian Angel
    Has your desktop started to look tired and a bit ‘blah’ lately? Then revive your desktop with the Waterfalls Theme for Windows 7. The theme comes with ten wallpapers full of gurgling, cascading waterfalls goodness. Download the Waterfalls Theme [Windows 7 Personalization Gallery] Use Your Android Phone to Comparison Shop: 4 Scanner Apps Reviewed How to Run Android Apps on Your Desktop the Easy Way HTG Explains: Do You Really Need to Defrag Your PC?

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  • Using NBuilder to mock up a data driven UI - Part 1

    In this article we will take a look at a fairly new open source project called NBuilder (http://www.nbuilder.org and http://code.google.com/p/nbuilder/) and how it can be used to provide us with fake data out of the gate. NBuilder allows you to quickly stand up generated objects based on standard .net types in an easy fluent manner. And that is just the start!

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