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  • Optimizing lifestyle and training

    - by Gabe
    I am a college freshman who has recently discovered a passion for computer science. Having had my first lick of formal python training last semester, I have cast aside my previously hedonist way of life and tunneled my sights on becoming the most rounded and proficient programmer I can be. I know that I'm taking strides in the right direction (I've stopped smoking, I've been exercising every day, I've taught myself C++ and OpenGL, and I've begun training in kung-fu and meditation), yet I am still finding myself struggling to achieve satisfactory results. I would like to be able to spend a good 3-4 hours every day burning through textbooks. I have the time cleared and the resources allocated. The problem lies in the logistics-- I have never taken anything seriously before. Recently I've realized that I am clueless when it comes to taking care of myself and gaining control of my mind, and it drastically hinders my productivity. My question is this: How can I learn to manage my time and take care of myself such that I can spend the maximum amount of time every day studying with steady concentration? Personal tricks would be key here: techniques you use to get yourself to sleep, a diet that yields focus, even computer break stretching routines or active reading techniques. Anything you could think of here would be great. I was a low-life in high school and I have the drive to turn my life around, I'm just quite a bit behind in the way of good habits :)

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  • SQL SERVER – New Look for CodePlexProject – Hosting for Open Source Software

    - by pinaldave
    Codeplex is my favorite site. CodePlex is Microsoft’s free open source project hosting site. You can create projects to share with the world, collaborate with others on their projects, and download open source software. It is great place to find so many open source project available to explore. All the softwares are free and open source. I often go there at intervals to check what is new in SQL Server field as well on other technologies. Yesterday when I visited it, I had nice surprise as it has total makeover and looks very decent as well elegant at the same time. I have noticed that when I talk about Codeplex is user community, not everybody knows about it. The quickest way I explain what is codeplex is that I start naming few of the projects which are available there and suddenly I start noticing a few hands going up knowing the projects. This is indirect way to prove that many of us know CodePlex usability but do not pay special attention to what it is actually. Let me name a few popular projects of the CodePlex here. SQL Server Sample Database [link] Image Resizer for Windows [link] Ajax Control Toolkit [link] Skype Voice Changer [link] Silverlight Toolkit [link] Windows 7 USB/DBD Download Tool [link] Orchard Project [link] There are very interesting SQL Server projects available on Codeplex as well. I am listing few of them here for reference in listed in no particular order. SQL Server Sample Database [link] SQL Server Compact ToolBox [link] Microsoft Drivers for PHP for SQL Server [link] Internals Viewer for SQL Server [link] SQL Server Spatial Tooks [link] SQL Monitor – managing sql server performance [link] SQL Server 2008 Extended Events SSMS Addin [link] How many of above mentioned project have you come across earlier? Leave a comment it will be interesting to know what our community is familiar with. Reference: Pinal Dave (http://blog.sqlauthority.com) Filed under: PostADay, SQL, SQL Authority, SQL Query, SQL Server, SQL Tips and Tricks, T SQL, Technology

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  • Latest News on Service, Field Service and Depot Repair Products

    - by LuciaC
    Service and Depot Repair Customer Advisory Boards (CAB) In November 2012 the Service and Depot Repair CAB joined together for a combined meeting at Oracle HQ in Redwood Shores, California to discuss all the latest news in the Oracle Service, Field Service and Depot Repair products.  Over four days attendees shared their experiences with implementing and using these EBS CRM products and heard details of recent enhancements and future product plans direct from Development. You can access all the Oracle presentations via Doc ID 1511768.1.  Here are just some of the highlights: Field Service: Next Generation Dispatch Center Endeca Integration Case Study: Oracle Sun Field Service implementation. Mobile Field Service: New capabilities for technician-facing applications Service: Integration with Oracle Projects New Teleservice enhancements Spares Management: Supplier Warranty External Repair Execution Oracle Knowledge (Inquira) Introduction for Service Organizations If you weren't at the CAB, take a look at these presentations for great information about what's new and what's coming up in these products. 12.1.3++ Features for Field Service, Mobile Field Service, Spares Management, FSTP & Advanced Scheduler In June 2012 the R12.1.3++ patches were released for Field Service, Mobile Field Service, FSTP and Advanced Scheduler.  These patches contain new and updated functionality for these CRM Service suite modules.  New functionality includes: Field Service/FSTP/MFS: Support for Transfer Parts across subinventories in different organizations Validation to ensure Installed Item matches Returned Item MFS Wireless - Support fro Special Address Creation MFS Wireless - Enhanced Debrief Flow Advanced Scheduler Scheduler UI - Display of Spares Sourcing Information Auto Commit (Release) Tasks by Territory Dispatch Center UI - Display Spare Parts Arrival Information Spares Management Enhancements to the Task Reassignment Process Enhancements to the Parts Requirements UI Supply Chain Enhancements to allow filtering of ship methods from source location by distance. Check the following notes for more details and relevant patch numbers:Doc ID 1463333.1 - Oracle Field Service Release Notes, Release 12.1.3++Doc ID 1452470.1 - Field Service Technician Portal 12.1.3++ New FeaturesDoc ID 1463066.1 - Oracle Advanced Scheduler Release Notes, Release 12.1.3++ Doc ID 1463335.1 - Oracle Spares Management Release Notes, Release 12.1.3++ Doc ID 1463243.1 - Oracle Mobile Field Service Release Notes, Release 12.1.3++

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  • Learning to code first game, few questions on basic game development and 3D

    - by ProgrammerByDay
    I've been programming for a while, and I'm concurrently learning how to make a basic game and slimdx, and wanted to talk to someone to hopefully get a few pointers. I've read that Tetris is the "Hello, world" of game programming, which made sense to me, so I decided to give it a shot. I've been able to code up a basic version in a few hours, which I'm quite happy with, but I had a few questions about 3D programming. Right now I'm using Direct3D to do display the blocks without any textures (just colored squares). I have a data structure (2d array of bytes, where each byte denotes the presence of a block and its color) which is the "game board," and on every render() call I create a new vertex buffer of the existing squares in the game board, and draw those primitives. This feels very inefficient, and I wondering what would be the idiomatic way of doing this in a 3D world, with matrix/rotations/translation operations. I know 3D is overkill for such a project, but I want to learn any 3d concepts that I can while I'm doing it. I understand that what you'd usually want to do is keep the same vertices/vertex buffers but manipulate them with matrices to achieve rotations/translations, etc. To do so, I assume what would happen is I'd have one vertex buffer for the "active" piece, since that'll be constantly rotated and moved, and have one vertex buffer for the frozen pieces on the bottom of the board, which is pretty much stationary, but will need to be changed/recreated when the active piece becomes frozen. Right now I'm just clearing and redrawing on every render call, which seems like the easiest way to do things, although I wonder if there's a more efficient way to deal with changes. Obviously there are a lot of questions I'm asking here, but if you can even just point me a step or two ahead in terms of how I should be thinking, it'd be great. Thanks

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  • Slick2D + LWJGL collision system

    - by Connor W
    So I've been learning java for a while and have explored slick and lwjgl before but went away from using Slick for a while. But I've recently gone back to using it (as I'm making a platformer and Tiled will be really helpful). But here's where my problems begin: collision. I have a player polygon and I check to see if it's colliding with my tiled map with this method: public static boolean playerCollisionWith() { for(int i = 0; i < Blockmap.entities.size(); i++) { Block entity1 = (Block) Blockmap.entities.get(i); if(playerPoly.intersects(entity1.poly)) { return true; } } return false; } This would work normally but I'm using a different method for movement. Instead of just adding a speed variable to the player's x axis. I move like this: if(Keyboard.isKeyDown(Keyboard.KEY_RIGHT)) { speedX = Math.min(5, speedX + 1); moving = true; playerPoly.setX(x); if(playerCollisionWith()) { speedX = -5; playerPoly.setX(x); } } That Math.min call is what is messing me up =. I can't just call speedX = -5, because when I do the player "bounces" when the right mouse button is down and it's colliding. Bounces as in flashes back and forth REALLY quickly. But I don't really know how I would make it so that collisions on the y axis would work either, whether the player is jumping or not. So if I could get some help with how to fix this problem that would be great. Thank you for the help!

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  • How do graphics programmers deal with rendering vertices that don't change the image?

    - by canisrufus
    So, the title is a little awkward. I'll give some background, and then ask my question. Background: I work as a web GIS application developer, but in my spare time I've been playing with map rendering and improving data interchange formats. I work only in 2D space. One interesting issue I've encountered is that when you're rendering a polygon at a small scale (zoomed way out), many of the vertices are redundant. An extreme case would be that you have a polygon with 500,000 vertices that only takes up a single pixel. If you're sending this data to the browser, it would make sense to omit ~499,999 of those vertices. One way we achieve that is by rendering an image on a server and and sending it as a PNG: voila, it's a point. Sometimes, though, we want data sent to the browser where it can be rendered with SVG (or canvas, or webgl) so that it can be interactive. The problem: It turns out that, using modern geographic data sets, it's very easy to overload SVG's rendering abilities. In an effort to cope with those limitations, I'm trying to figure out how to visually losslessly reduce a data set for a given scale and map extent (and, if necessary, for a known map pixel width and height). I got a great reduction in data size just using the Douglas-Peucker algorithm, and I believe I was able to get it to keep the polygons true to within one pixel. Unfortunately, Douglas-Peucker doesn't preserve topology, so it changed how borders between polygons got rendered. I couldn't readily find other algorithms to try out and adapt to the purpose, but I don't have much CS/algorithm background and might not recognize them if I saw them.

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  • Entity component system -> handling components that depend on one another

    - by jtedit
    I really like the idea of an entity component system and feel it has great flexibility, but have a question. How should dependent components be handled? I'm not talking about how components should communicate with other components they depend on, I have that sorted, but rather how to ensure components are present. For example, an entity cannot have a "velocity" component if it doesn't have a "position" component, in the same way it cant have an "acceleration" component if it doesn't have a "velocity" component. My first idea was every component class overrides an "onAddedToEntity(Entity ent)" function. Then in that function it checks that prerequisite components are also added to the entity, eg: struct EntCompVelocity() : public EntityComponent{ //member variables here void onAddedToEntity(Entity ent){ if(!ent.hasComponent(EntCompPosition::Id)){ ent.addComponent(new EntCompPosition()); } } } This has the nice property that if the acceleration component adds the velocity component, the velocity component will itself add the position component to the entity so dependency "trees" will sort themselves out. However my concern is if I do this components will silently be added with default values and, in the example of adding position, many entities will appear at the origin. Another idea was to simple have the "Entity.addComponent();" function return false if the component's prerequisite components aren't already on the entity, this would force you to manually add the position component and set its value before adding the velocity component. Finally I could simply not ensure a components prerequisite components are added, the "UpdatePosition" system only deals with entities with both a position and velocity component, so therefore adding a velocity component without having a position component wont be a problem (it wont cause crashes due to null pointer/etc), but it does mean entities will carry useless unused data if you add components but not their prerequisite components. Does anyone have experience with this problem and/or any of these methods to solve it? How did you solve the problem?

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  • Best/Preferred software for photography.

    - by chills42
    I am just getting into photography as a hobby, and am looking for some good tools for image uploading/browsing/editing. I am currently using the Canon EOS utility that came with the camera for uploading, Picasa for browsing, and GIMP for editing. Pros: The files are stored using the standard file system (no proprietary library like iPhoto) Great photo editing possibilities Free (except the Canon Utility, but that was bundled) Cons: Multiple programs Hard to view the Exif Data (I like the way that iPhoto displays the data) Over-simplified editing tools in Picasa What other tools should I look into? Also, I occasionally shoot in RAW, and would prefer Mac support (better monitor), but I also have windows and linux machines.

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  • LTO 3 tape drive needing repaired

    - by DO it all Paul
    We have an IBM LTO 3 tape drive that needs repaired and with the £400 price tag i'm having to shop around for quotes. My question is has anyone actually repaired one before and how was in done? The first error LED was showing a 6, then i cleared the mangled tape only for it to start flashing alternate 'o' on the 7 segment display, simliar to a half 8, flashing top to bottom and it would just flash away like that coupled with a flashing amber light. I tried a reset holding the eject button for it to show an 'r' the go back to flashing again as before. I checked the IBM solutions for the codes but this flashing isn't documented at all. Would be great if anyone had any experience in this area. Thank you, Paul

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  • Drupal + Zen - not proper layout/no graphics

    - by Luma
    Hello, I installed Drupal (both using Fantastico, then started over from scratch) and Drupal works great except when I setup the Zen theme (following the instructions on the website and in the readme-first.txt) the theme does not show up properly. it has no graphics except for the tiny drupal logo way at the bottom. the rest is text. I have uploaded the theme to the /public_html/sites/all/themes folder and it does show up in themes in the administer section so I select enable and default. permissions on this folder are 755. any ideas? I checked the Drupal forums and someone is having the same problem but no one replied (this was in April) so I figured I would have a better shot on this awesome website. thanks. Luma

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  • Short Look at Frends Helium 2.0 Beta

    - by mipsen
    Pekka from Frends gave me the opportunity to have a look at the beta-version of their Helium 2.0. For all of you, who don't know the tool: Helium is a web-application that collects management-data from BizTalk which you usually have to tediously collect yourself, like performance-data (throttling, throughput (like completed Orchestrations/hour), other perfomance-counters) and data about the state of BTS-Applications and presents the data in clearly structured diagrams and overviews which (often) even allow drill-down.  Installing Helium 2 was quite easy. It comes as an msi-file which creates the web-application on IIS. Aditionally a windows-service is deployt which acts as an agent for sending alert-e-mails and collecting data. What I missed during installation was a link to the created web-app at the end, but the link can be found under Program Files/Frends... On the start-page Helium shows two sections: An overview about the BTS-Apps (Running?, suspended messages?) Basic perfomance-data You can drill-down into the BTS-Apps further, to see ReceiveLocations, Orchestrations and SendPorts. And then a very nice feature can be activated: You can set a monitor to each of the ports and/or orchestrations and have an e-mail sent when a threshold of executions/day or hour is not met. I think this is a great idea. The following screeshot shows the configuration of this option. Conclusion: Helium is a useful monitoring  tool for BTS-operations that might save a lot of time for collecting data, writing a tool yourself or documentation for the operations-staff where to find the data. Pros: Simple installation Most important data for BTS-operations in one place Monitor for alerts, if throughput is not met Nice Web-UI Reasonable price Cons: Additional Perormance-counters cannot be added Im am not sure when the final version is to be shipped, but you can see that on Frend's homepage soon, I guess... A trial version is available here

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  • Do you ever worry that you're more concerned with how something is built rather than what you are actually building?

    - by Rob Stevenson-Leggett
    As a programmer I have an inherent nagging annoyance at my tools, other peoples code, my code, the world in general. I always want to improve it. So I refactor, I stay on top of the latest techniques. I try and learn patterns, I try to use frameworks so as not to reinvent the wheel. I can write a tech spec that will blow your socks off with the amount of patterns I can squeeze in. However, lately I feel I actually know more about the tools I use than how to actually implement successful software. I feel like I'm lacking in the human factors skill set and I believe that to be a successful software engineer takes more than knowing the coolest framework. I think it needs some of the following skillsets too. Interaction design User experience Marketing I've got a bit of this that I've learned from people I've worked with and great projects I've worked on but I don't feel like I "own" these skills. Am I right? Should I be trying to develop these skills further, or should these be left to the people who do these for a career? How do you make sure you don't get too tied up in how you're doing something and make sure you "make your users awesome"? Does anyone know of good resources for learning these skills from a programming point of view?

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  • Facebook Stories for Retailers

    - by David Dorf
    Getting people to "like" a brand is important because it opens the door to a possible B2C relationship. Once a person likes that brand, the brand can post to their newsfeed with promotions, announcements, and surveys. At least for me, I "hide" the noisy brands and just monitor the ones that keep posts under 4 times a week. I see lots of people, especially with fashion brands, comment on postings at which point the posting is seen by their network. A metric I've heard (but not verified) is that for every person that comments, ten of their friends see the original posting. That's a pretty cheap way to communicate to potential customers in a viral way. Over at mainstreet.com they compiled the a list of the top liked retailers on Facebook as of Feb 1, 2011. They are listed below: 19,414,892 Starbucks 11,302,939 Victoria's Secret 7,925,184 Zara 7,032,398 McDonald's 6,117,222 H&M 5,400,586 Taco Bell 4,665,760 Subway 4,494,849 Lacoste 4,185,570 Hollister 3,973,181 Forever 21 So I guess the public likes their fast-food and fashion. To take this to the next level, Facebook is now displaying Sponsored Stories, which I saw for the first time on my page this weekend. I found this picture at the Wall Blog that depicits Sponsored Stories very well. Over on the right-hand column of a person's page, where they see advertisements and such, Facebook will post stories involving their network of friends and their interaction with sponsored brands. Now their "likes" can suddenly become your ads. "Jessica and Philip like Starbucks. What are you waiting for?" This is another great way to take messages viral by accessing social graphs. As usual there will be a certain level of outcry from privacy advocates, but given the other more iniquitous issues, I believe this will fall by the wayside. Retailers should consider using Sponsored Stories to increase their Likes, and thus increase their voice in the social world.

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  • Visual Studio 2010 Is Here!

    - by Bill Evjen
    I think back to the days of the first versions of Visual Studio (when it was called Visual Studio .NET, remember?) and I think about how far Microsoft has come with this IDE. It really is the best IDE on the market. There is so much to this IDE it is amazing. It now can really handle managing your complete software application development lifecycle. For me, it is (besides Windows 7) the best and most successful product Microsoft has developed. You can obviously get this now and it is available on MSDN and some other places: MSDN Visual Studio Trial Editions Visual Studio 2010 Express Editions (free) You will also find great info at the Visual Studio Developer Center. Some other interesting tidbits of info: JetBrain’s ReSharper 5.0 has been released for VS2010 Oracle will have the new Oracle Dev Tools for VS2010 within one month - http://bit.ly/9gC9NE Visual Studio 64-bit - Why there is no 64-bit version of VS - http://bit.ly/dhhwAj In installing this version of Visual Studio, if you have been working on the previous RC builds, then you are going to want to uninstall these previous editions of the 2010 product. You can do this through the Add Remove Programs dialog and you are going to want to select the appropriate item from the long list of Visual Studio items. You are then going to want to step through the Visual Studio dialog (it will seem as if you are installing it again) – and you will then come to a point where you can select the option to Uninstall the entire application. If you have installed the Silverlight 4 RC stuff, then you are also going to want to uninstall this and you are also going to want to uninstall the “Update for Visual Studio 2010 (KB976272)” before installing Silverlight RC2 – which you can find on www.silverlight.net. Technorati Tags: vs2010,.net,visualstudio,microsoft

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  • Functional programming and stateful algorithms

    - by bigstones
    I'm learning functional programming with Haskell. In the meantime I'm studying Automata theory and as the two seem to fit well together I'm writing a small library to play with automata. Here's the problem that made me ask the question. While studying a way to evaluate a state's reachability I got the idea that a simple recursive algorithm would be quite inefficient, because some paths might share some states and I might end up evaluating them more than once. For example, here, evaluating reachability of g from a, I'd have to exclude f both while checking the path through d and c: So my idea is that an algorithm working in parallel on many paths and updating a shared record of excluded states might be great, but that's too much for me. I've seen that in some simple recursion cases one can pass state as an argument, and that's what I have to do here, because I pass forward the list of states I've gone through to avoid loops. But is there a way to pass that list also backwards, like returning it in a tuple together with the boolean result of my canReach function? (although this feels a bit forced) Besides the validity of my example case, what other techniques are available to solve this kind of problems? I feel like these must be common enough that there have to be solutions like what happens with fold* or map. So far, reading learnyouahaskell.com I didn't find any, but consider I haven't touched monads yet. (if interested, I posted my code on codereview)

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  • case-specific mod rewrite on Wordpress subdomain multisite

    - by Steve
    I have split a Wordpress blog into multiple category-specific blogs using subdomains, as the topics in the original blog were too broad to be lumped together effectively. Posts were exported from the parent www blog and imported into the subject-specific subdomain blogs. I believe .htaccess provides mod rewrite for all subdomains (including the original www) in a single .htaccess file. I use .htaccess to perform 301 redirect on post categories to the relevant post on the subdomain's blog. eg: RedirectMatch 301 ^/auto/(.*)$ http://auto.example.com/$1 The problem I have is that the category has been retained in the permalink structure in the subdomain blog, so that www.example.com/auto/mercedes is now auto.example.com/auto/mercedes. The 1st URL is redirect to the 2nd, but unfortunately, the 2nd URL is redirected to auto.example.com/mercedes using the same rewrite rule, which is not found, as the permalink on the subdomain's blog retains the parent category of auto. The solution would be to adjust the permalink structure in the subdomain's WP settings, so that the top level category does not duplicate the subdomain. My question would be: how do I then strip a section of the original (www) blog's post URL from the subdomain's URL when redirecting? eg: How do I redirect www.example.com/auto/mercedes to auto.example.com/mercedes? I'm assuming this would be a regular expression trick, which I am not great at. Update: I might have to use: RewriteCond %{HTTP_HOST} !auto.example.com$ in the default Wordpress if loop in .htaccess, and seperate my custom subdomain redirections into a second if loop section.

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  • One network, two macbooks, one is fast and the other is slow

    - by Brendan
    I really need help for my friend. I know next to nothing about computers. My roommate and I both have macbook pros from the same year running OS X, are both connecting wirelessly to the same xfinity wifi, and while mine runs perfectly fine, my roommate complains that his works very slowly and times out every few seconds. I can't seem to figure out why this is. He is trying to get me to switch internet providers because he is convinced that it is their problem, but this cannot possibly be the issue since it works great on mine. He has an xbox hooked up to the wifi that he says also works poorly. I really can't see switching providers given that I am experiencing absolutely zero problems. How can I help my friend?

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  • The OTN Lounge at JavaOne

    - by Tori Wieldt
    This year, the Oracle Technology Network Lounge at JavaOne will be in the Hilton Ballroom, right in the center of the JavaOne DEMOgrounds. We'll have Java experts, community members and OTN staff to answer your questions. We've also even created a "Mini Theater" for casual demos from community members (and you too, if you ask nicely and we can fit you in). We'll have a detailed schedule up soon. We're waiting for you! Tori Wieldt (@Java) will be in the booth, doing interviews for the Youtube/Java channel. Sonya Barry (@Javanetbuzz) will be around with the Java.net experts. Yolande Poirier will be there to discuss Making the Future Java for the next generation of Java developers. What would the lounge be without swag? Scan your badge each day for a raffle of great prizes, and of course, we'll have OTN T-shirts and some surprises throughout the week. Follow @JavaOneConf for details and updates. The Java DEMOgrounds will show you the latest in Java technologies, from team members who create and maintain Java, including: Recent and upcoming features for Java SE GlassFish Server Open Source Edition Java EE in Action Next-Generation Applications Java EE 7, HTML5, WebSockets, Caching JavaFX: The Rich Client Platform Rich, Compelling UI with JavaFX on Embedded Systems Java ME Embedded: Small, Intelligent, Connected Cutting-Edge JDK 7 and Java EE 6 Support with NetBeans Oracle Eclipse Projects Come by, find a couch, charge your laptop and meet old and new friends.

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  • Using USB to Ethernet with Linux Ubuntu 12.04

    - by Sriram
    Being a newbie, Please excuse if the technical Jargon used is not an universally accepted one :) I have a particular device (say device A) whose USB2.0 driver is available from Linux community. Linux UBUNTU12.04 based PC is able to detect that device via the available driver. My requirement is to ensure that PC can exchange the command as well as data with the device A over TCP/IP packets (In other words, instead of just a USB Based driver, there should be a TCP/IP wrapper over the device USB driver and still does the same job as the USB driver was doing before) Bought an USB (Female) to RJ-45 adapter,connected Device A (male) USB to the USB Female end of the adapter and the Ethernet end connected to the router. PC also is connected to the same router so that both Device A and the PC have the IP address in the same subnet range. So the packets produced by the device A can be routed to the PC via some binding( not sure how I can achieve this, but conceptual idea) Here are the issues I can see as of now 1) USB to RJ-45 is just a hardware signal conversion and not a NIC in itself and hence no MAC/IP ADDRESS assigned. Can we bind a virtual NIC created in PC with this connector? 2) Any available USB TO IP command as well as data translation wrappers available? e.g. command for the device A on Ethernet converted to command for the device A on USB which is then acted upon the device as a command from the USB driver There is some missing link in my understanding and hence it would be of great help if you can bounce off some ideas on how I can take this forward so that Device A and PC exchange data over IP. Thanks and Regards, Sriram

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  • What is the best practice for when to check if something needs to be done?

    - by changokun
    Let's say I have a function that does x. I pass it a variable, and if the variable is not null, it does some action. And I have an array of variables and I'm going to run this function on each one. Inside the function, it seems like a good practice is to check if the argument is null before proceeding. A null argument is not an error, it just causes an early return. I could loop through the array and pass each value to the function, and the function will work great. Is there any value to checking if the var is null and only calling the function if it is not null during the loop? This doubles up on the checking for null, but: Is there any gained value? Is there any gain on not calling a function? Any readability gain on the loop in the parent code? For the sake of my question, let's assume that checking for null will always be the case. I can see how checking for some object property might change over time, which makes the first check a bad idea. Pseudo code example: for(thing in array) { x(thing) } Versus: for(thing in array) { if(thing not null) x(thing) } If there are language-specific concerns, I'm a web developer working in PHP and JavaScript.

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  • Algorithmically generating neon layers on pixel grid

    - by user190929
    In an attempt at a screensaver I am making, I am a fan of neo-like graphics, which, of course, look great against a black background. As I understand it, neon, graphically speaking, is essentially a gradient of a color, brightest in the center, and gets darker proceeding outward. Although, more accurate is similar, but separating it into tubes and glow. The tubes are mostly white, while the glow is where most of the color is seen. Well... the tubes could also be a light variant of the color, you could say. The glow is darker. Anyhow, my question is, how could you generate such things given an initial pattern of pixels that would be the tubes? For example, let's say I want to make a neon 'H'. I, via the libraries, can attain the rectangles of pixels which represent it, but I want to make it look neonized. How could I algorithmically achieve such an effect given a base tube shape and base color? EDIT: ok, I mistated that. Got a bit distracted. My purpose for this was similar to a neon effect, but not. Sorry about that. What I am looking for is something like this: Start with a pattern of pixels: [!][!][!][!][!][!][!][!] [!][!][O][!][!][!][!][!] [!][!][O][O][!][!][!][!] [!][!][!][!][O][!][!][!] [!][!][!][!][!][!][!][!] How to I find the U pixels? [!][E][E][E][!][!][!][!] [!][E][O][E][E][!][!][!] [!][E][O][O][E][E][!][!] [!][E][E][E][O][E][!][!] [!][!][!][E][E][E][!][!] Sorry if that looks bad.

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  • external SCSI tape drive DAT 72 problem Solaris 10

    - by Hassan
    Hi all, I have solaris 10 sparc running and working very well but i have problem with external SCSI tape drive DAT 72 problem it seems to me the tape drive is manufactured by SUN microsystems when i ran mt -f /dev/rmt/0 status it reveals the following output bash-3.00# mt -f /dev/rmt/0 status /dev/rmt/0: No such file or directory when i ran ls -l it reveals the following output ls -l /dev/rmt/0 lrwxrwxrwx 1 root root 43 Sep 20 2006 /dev/rmt/0 -> ../../devices/pci@8,600000/scsi@1,1/st@3,0: it seems to me everything is okay SCSI cable is connected properly to Tape device and to server as well the tape has SCSI termination dongle as well and connected properly to Tape device as well any ideas would be a great assist Thanks in advance

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  • Ignore Partial Upgrade -- Google Earth Dependencies

    - by pyraz
    I'm running a 64-bit install of Xubuntu 12.04. It took me a little while to get Google Earth working. The 64-bit Google earth package requires some 32-bit gtk libraries provided by ia32-libs. However, when I ran a simulation to install ia32-libs and it's dependencies, it wanted to remove a ton of programs, including the xubuntu-desktop meta-package. As a work-around, I used getlibs to get the 32-bit libraries I needed, and then installed Google Earth with the deb package and the --ignore-depend option to dpkg. Awesome, Google Earth is installed and is working great! Now, however, Update Manager keeps complaining about a "Partial Upgrade", and apt-get won't let me install any new applications. It wants me to do a fix-broken install, but when I do a simulation of apt-get -f install I get some very bad news, they want to uninstall the Google Earth I just worked so hard to install! $> apt-get -f -s install Reading package lists... Done Building dependency tree Reading state information... Done Correcting dependencies... Done The following packages will be REMOVED: googleearth 0 upgraded, 0 newly installed, 1 to remove and 0 not upgraded. Remv googleearth [6.0.3.2197+0.7.0-1] TL;DR The --ignore-depends passed to dpkg is not propagating to apt-get, so now I can't install any new applications until I uninstall Google Earth, because of it's missing dependencies (even though it works fine without them). How can I fix this?

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  • iDeneb OS X Issues

    - by Charlie Somerville
    This afternoon I installed OS X Leopard on my computer through iDeneb. It mostly worked, but I have a few issues. Firstly, it doesn't seem like it's detecting my graphics card properly. I have a Nvidia 8800GT 512mb installed. As you can see in the screenshot below, it's not detecting it and limiting me to a resolution of 1024x768 (which is a pain in the arse to use) Secondly, I don't have any sound. It's not a massive issue like the graphics issue above, but I'd still like to get it rectified. Thirdly, (this is a very small one) my numlock light doesn't seem to be functioning. I don't really care as the numpad still works, but it would be nice to have the numlock light working. Can anyone lend a hand with any of those problems? Thanks. (bump for great justice)

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  • A story from SQLvdb and Idera

    - by Peter Larsson
    A year or so back, I struggled with some consistency problems so I figured out I needed a way to "mount" backup files as a virtual database. At the time (SQL Server 2005 and SQL Server 2008) my choice fell on Idera's SQLvdb because it felt easy enough to use. I used it a few times and it worked great. Some time later we upgraded to SQL Server 2008R2 and I didn't use SQLvbd for a long time. Until yesterday... I was upset that suddenly SQLvbd took more than 2 hours to mount the backup file (if it succeeded at all). I uninstalled the application and went for lunch. After lunch, I decided to give SQLvbd another chance so I emailed their tech support and got a response within 30 minutes or so. Now, since I am a SQL Server MVP, they gave me another serial number than my first and I downloaded and installed a newer version. But also this version was really slow. I emailed back to them with the additional information they requested and to my surprise I had got an email this morning when I came back to work, where Idera explained some of the issues (bugs) and asked my to test a newer version. I did, and now a fresh mount of a 100GB database (compressed to 20GB with native compression) located on our SAN takes less than 6 minutes! Thank you. //Peter

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