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  • Searching Excel sheet for errors

    - by Graphth
    Imagine a huge worksheet with tens of thousands of formulas. I want to be able to quickly find all the errors to correct them. I have found that using the normal search procedure I can type in things like #DIV/0! or #NAME? and it will find them, but I would have to type in all the various types of errors separately and that is somewhat time consuming. Is there a way to simply search for any error? One solution we seem to use at work is to put most formulas inside =if(iserror()) or now =iferror() and to just have it output "error" if it is an error. Is this necessary? Or, is there a way to find all the errors without it?

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  • How compilers know about other classes and their properties?

    - by OnResolve
    I'm writing my first programming language that is object orientated and so far so good with create a single 'class'. But, let's say I want to have to classes, say ClassA and ClassB. Provided these two have nothing to do with each other then all is good. However, say ClassA creates a ClassB--this poses 2 related questions: -How would the compiler know when compiling ClassA that ClassB even exists, and, if it does, how does it know it's properties? My thoughts thus far had been: instead of compiling each class at a time (i.e scan, parse and generate code) each "file (not really file, per se, but a "class") do I need to scan + parse each first, then generate code for all?

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  • variable declaration in javascript [migrated]

    - by ShaggyInjun
    I have been doing something like this for a while and I have never seen any errors. But, unfortunately, I have never been able to explain why this works. The first line creates a variable which points to a function. The second line just adds func2 to func1 separated by a dot and defines a function. If I add a var in front of func1.func2 then I see a compilation error. func1.func2 = function(){}; Error SyntaxError: missing ; before statement var func1.func2 = function(){}; What type was func1 on first line 1 and what did it become on line 2. var func1 = function(){}; func1.func2 = function(){}; Thanks Venkat

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  • Why do so many people dislike C++?

    - by General K
    Beginners and professional, on blogs, in forums and chatrooms - people say it everywhere: C++ oh dear god no The short form of the question: For what reason is C++ so widely disliked and people are horrified by the imagination of using it for some project? I have been using a lot of different languages, including C++ by now, and I can only say that I really like it. I'm far more horrified by Delphi than by C++. Actually, I find it's an almost perfect, compiled language! I've been doing a lot of different projects in C++ as well, ranging from 3D video games to webservers and emulators for old video game consoles. And I still do not see the problem everyone else seems to have with it! It was hard for me to get into it of course, as it is quite complex and has a lot of depth, but after that it's simply great.

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  • How to update a mesh position base on a pressed key?

    - by steven166
    I have a mesh loaded from a file, like a tiger mesh. At the first time it locates at A position, then if I press a left key, it will moves to B position but the problem is if I press a left key one more time, it will move from B position to C position. It means that the amount I want to move the mesh will base on the current position instead of the first time rendering position. I can do it if I have a array vertices then I just update the vertex buffer, but a mesh loaded from a file does not have an array vertices, so how to do it? Anybody help me, please?

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  • Why do so many people dislike C++?

    - by General K
    Beginners and professional, on blogs, in forums and chatrooms - people say it everywhere: C++ oh dear god no The short form of the question: For what reason is C++ so widely disliked and people are horrified by the imagination of using it for some project? I have been using a lot of different languages, including C++ by now, and I can only say that I really like it. I'm far more horrified by Delphi than by C++. Actually, I find it's an almost perfect, compiled language! I've been doing a lot of different projects in C++ as well, ranging from 3D video games to webservers and emulators for old video game consoles. And I still do not see the problem everyone else seems to have with it! It was hard for me to get into it of course, as it is quite complex and has a lot of depth, but after that it's simply great.

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  • UEFI hardware and dual booting with windows

    - by user39803
    I've been struggling for 3 days trying to dual boot Ubuntu 11.10 and Windows 7. I want to use an SSD for my Ubuntu installation and an hdd for Windows. I realized that I have to install windows first and then ubuntu, and so I did that. When I first install windows it boots fine from my hdd, but when I add ubuntu on my ssd and restart, I get a black screen with a blinking cursor. I've read many forums where this is asked but haven't found a single solution that works. I've tried boot repair. It told me to make a fat ESP partition and I did that as well but it still doesn't work. I'm a noob and any suggestions would be really appreciated.

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  • Does anyone use 12.04 with HD 6950?

    - by Midori
    Back when I first tried to switch from Windows to Ubuntu (6-7 months ago) I had several graphics related problems. The VGA was overheating, graphic glitches, video playing issues, slow/choppy window movements etc. After 2-3 reinstalls, hours of playing with different drivers/settings I decided to return to Windows :\ Now I want to give it another shot. But before I start to format, partitioning, backup and other time consuming stuff I wanted to ask if anyone using the 12.04 with HD 6950. Can I utilize the full potential of it, or the drivers are still not good enough? I know that Linux isn't meant to play games in the first place, but the games I playing (SC2, BLC, HoN, DotA 2) are working with wine as far as I know (or aren't?) and I can't find any reason not to switch from Windows if I can utilize the full potential of my config in Ubuntu. So anyone who got experiences with this VGA in Ubuntu please reply. Thanks in advance :)

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  • will any one solve my GOOGLE ranking Confusion? [on hold]

    - by India SEO Analyst
    Iam handling website www.usamovingandstorage.com and targeting keywords "chicago movers", but my website is on third page. But my website has nice backlink, and recently i removed irrelevant backlinks also. I compared my competitors' websites such as www.ampolmoving.com, www.chicagomovers.com and have no such big backlinks, but they are ranking first page in google. I compared the three websites in www.opensiteexplorer.org. In that my site has good results. Then How is it happened? I need full comparison, why my site is ranking in third page? what are the actions i need to take to rank in first page.

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  • Looking for an algorithm to connect dots - shortest route

    - by e4ch
    I have written a program to solve a special puzzle, but now I'm kind of stuck at the following problem: I have about 3200 points/nodes/dots. Each of these points is connected to a few other points (usually 2-5, theoretical limit is 1-26). I have exactly one starting point and about 30 exit points (probably all of the exit points are connected to each other). Many of these 3200 points are probably not connected to neither start nor end point in any way, like a separate net, but all points are connected to at least one other point. I need to find the shortest number of hops to go from entry to exit. There is no distance between the points (unlike the road or train routing problem), just the number of hops counts. I need to find all solutions with the shortest number of hops, and not just one solution, but all. And potentially also solutions with one more hop etc. I expect to have a solution with about 30-50 hops to go from start to exit. I already tried: 1) randomly trying possibilities and just starting over when the count was bigger than a previous solution. I got first solution with 3500 hops, then it got down to about 97 after some minutes, but looking at the solutions I saw problems like unnecessary loops and stuff, so I tried to optimize a bit (like not going back where it came from etc.). More optimizations are possible, but this random thing doesn't find all best solutions or takes too long. 2) Recursively run through all ways from start (chess-problem-like) and breaking the try when it reached a previous point. This was looping at about a length of 120 nodes, so it tries chains that are (probably) by far too long. If we calculate 4 possibilities and 120 nodes, we're reaching 1.7E72 possibilities, which is not possible to calculate through. This is called Depth-first search (DFS) as I found out in the meantime. Maybe I should try Breadth-first search by adding some queue? The connections between the points are actually moves you can make in the game and the points are how the game looks like after you made the move. What would be the algorithm to use for this problem? I'm using C#.NET, but the language shouldn't matter.

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  • Where in a typical rendering pipeline does visibility and shading occur?

    - by user29163
    I am taking a computer graphics course. The book and the lecture notes are vague on the on the order of flow between the different steps in the rendering process. For example, if we have specified a view in a scene, and then want to perform a projection transformation for that given view, then we have to go through a sequence of transformations. In the end we end up with a normalized "viewcube" ready to be mapped 2D after clipping. But why do we end up with a cube (ie 3D thing), when a projection results in projecting the 3D objects to 2D. (depth information is lost?) The other line of reasoning is that all information further needed is stored within the "cube" and that visibility detection and shading is performed with respect to this cube and then we perform rasterezation.

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  • Google I/O 2012 - The Web Can Do That!?

    Google I/O 2012 - The Web Can Do That!? Eric Bidelman The web is changing so quickly that it's hard to keep up with what's new in the platform. HTML5's new capabilities allow developers to build a whole new suite of applications - things that were once impossible to do, are now a reality. This session will walk you down the bleeding edge of HTML5 for 2012 by focusing on in-depth techniques, which solve real world challenges. We'll cover media capture, file I/O, advanced usage of websockets, media streaming, device input, multimedia, and modern css design. For all I/O 2012 sessions, go to developers.google.com From: GoogleDevelopers Views: 361 37 ratings Time: 43:07 More in Science & Technology

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  • Help understanding my hard drive / partitioning situation... Pictures Included! :)

    - by xopenex
    So I have installed windows 7, and two different distros of linux... I have read and tried to understand things like "spanned" "extended" "primary" "swap" "dev/dev2/" "GRUB" "Windows Boot Loader/Manager" etc.... I have a very very limited understanding of all of it! :) I am trying to figure out how to get all OS boot options on one Boot manager (I'm thinking it will be GRUB), because at this point when i turn on my computer, I basically get two booting options (excluding the memtest options etc)... One options is to boot one of my Linux Distros and the second option is to boot my Windows 7. When i go with the first option, Linux boots up... when i go with the second Windows 7 option, I get the "windows boot manager screen" and I can choose Windows 7 or my other installation of Linux (Ubuntu)... In addition, I did not have swap partition from my first installation of Linux, I created it during the installation of my second distro... This is a lot of info for me, but I'm guessing that you linux Gurus, pretty much understand what is going on! Hope my question makes sense.. i will try and simplify... Can i get all 3 OS's optioned to boot from one GRUB? Can i get both Linux distros to use one swap file (I have seen this possible in other threads, but because of how my disk is partitioned, i dont know if i can do this) I hope that i dont have to start all over installing one after the other. Ive got some pics that may help understand my hard drive situation! Thanks guys! :) EDIT... i had some pics, but im a new member.. so cant post them... :( here is a description of the pics... incase i can email them or post later. [grub][3] First Screen I come to after turning on computer... "Ubuntu with linux 3.2.6" (highlighted) fires up Linux perfectly... other choice at bottom of list "Windows 7 (loader) (on dev/sda1)... brings me to the next picture below.. windows boot manager [win boot mngr][6] both options here load the os selected [Disk Manager Windows][1] picture of my hard drive situation through windows disk manager utility [gparted][2] picture of my hard drive situation through "gparted" [mycomp][4] picture of my hard drive situation through "my computer" [paragon][5] one last pic of my hard drive situation through the eyes of "paragon"

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  • Clean Ubuntu 14.04 install taking longer to boot after kernel upgrade

    - by mvburgos
    Hello this is my first post. I own an Asus Chromebox (2gb ram, 16 gb sdd, 3.0 usb ports) and fresh installed Ubuntu 14.04 x64. I decided to upgrade kernel because I was experiencing some freezing issues with XBMC, So first i installed stable kernel 3.14.04 from mainline and boot time was fine (it booted very fast I would say about 5 seconds) then after a while I installed kernels 3.15 and 3.14.06 BUT this time I also removed OLD STOCK KERNELS (dunno if that has something to do) after that the problem began, boot time is taking way longer, I would say about 30 seconds. Finally today I installed kernel 3.14.07, set grub to boot with that by default but same thing :( I post boot.log and dmesg, hope it is correct for this matter, if you need any other log just let me know. boot.log dmesg

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  • Good resources for learning modern OpenGL (3.0 or later)?

    - by MatterGoal
    I stumble upon the search of a good resource to start with OpenGL (3.0 or later) . Well, I found a lot of books but none of them can be considered a good resource! Here two examples: OpenGL Programming Guide (7th edition) http://www.amazon.com/exec/obidos/ASIN/0321552628/khongrou-20 This is FULL of deprecated material! Almost every chapters begin with a note about that. OpenGL Superbible (5th Edition) http://www.amazon.com/exec/obidos/ASIN/0321712617/khongrou-20 This book uses a library created by the author to explain the main arguments, hiding what you want to learn! I don't want to learn how to use your library! I want to learn OpenGL! I hope that you understand this is not the same question like "hey I'm not able to use Google... tell me how to learn OpenGL". I've just finished a full and deep search but I can't find a good and complete resource to learn the "new" OpenGL avoiding deprecated topics. Can someone heading me in the right direction? I know C++ and I have 10 years of experience in development... where I can find a good resource?! I want to spend time on it and I want to learn deeply. (please feel free to edit my question, my English is terrible!)

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  • Building a List of All SharePoint Timer Jobs Programmatically in C#

    - by Damon
    One of the most frustrating things about SharePoint is that the difficulty in figuring something out is inversely proportional to the simplicity of what you are trying to accomplish.  Case in point, yesterday I wanted to get a list of all the timer jobs in SharePoint.  Having never done this nor having any idea of exactly how to do this right off the top of my head, I inquired to Google.  I like to think my Google-fu is fair to good, so I normally find exactly what I'm looking for in the first hit.  But on the topic of listing all SharePoint timer jobs all it came up with a PowerShell script command (Get-SPTimerJob) and nothing more. Refined search after refined search continued to turn up nothing. So apparently I am the only person on the planet who needs to get a list of the timer jobs in C#.  In case you are the second person on the planet who needs to do this, the code to do so follows: SPSecurity.RunWithElevatedPrivileges(() => {    var timerJobs = new List();    foreach (var job in SPAdministrationWebApplication.Local.JobDefinitions)    {       timerJobs.Add(job);    }    foreach (SPService curService in SPFarm.Local.Services)    {       foreach (var job in curService.JobDefinitions)       {          timerJobs.Add(job);       }     } }); For reference, you have the two for loops because the Central Admin web application doesn't end up being in the SPFarm.Local.Services group, so you have to get it manually from the SPAdministrationWebApplication.Local reference.

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  • How to get more info out of the uninformative Windows 8 BSoD?

    - by amiregelz
    Windows 8's Blue Screen of Death is different from the previous Windows versions' one: In order to find out what caused the problem you need to write down or remember the search term it presents you with. The two search terms I have seen suggested so far are SYSTEM_SERVICE_EXCEPTION and HAL_INITIALIZATION_FAILED. Both of them are quite generic terms. While it’s nice not to have to look at a blue screen full of text, the previous BSoD was more informative than the Windows 8 BSoD, since it contained a detailed error code (information for diagnostic purposes that was collected as the operating system performed a bug check), which could get you closer to tracking down the root of the problem. How can I get more information about the error Windows 8 has encountered, in order to track down the root of the problem?

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  • On which page(s) to add canonical?

    - by user6211
    I have two pages with same content and same meta title and meta description. they also have very simular url: http://www.mysite.com/new-york http://www.mysite.com/new_york I need first link to be "official". To avoid having duplicated pages, i want to add canonical meta tag in header... but on which page? does it have to be on both of them or only on second? On on first? Can you give me some advice please?

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  • How to check if my installation of ubuntu is alright?

    - by Likhon
    I recently changed the size of the partition that contained my Ubuntu installation using gparted from a live CD. I also moved it from one place to another. It was my first time and I hit the cancel button during my first try. I completed the task in my second try. But now I see that the size of the "computer" folder has shrinked by 2GB. Now I want to know if the system files are alright as I have backed up my files from the home folder before. How do I do that? Thanks in advance.

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  • UK Data Breaches Up by 10 fold in 10 years.

    - by TATWORTH
    At http://www.v3.co.uk/v3-uk/news/2201863/uk-data-breaches-rocket-by-1-000-percent-over-past-five-years there is an interesting report on the increase in data breaches reported in the UK.A lot of this increase may simply a change in legislation that has made reporting a statutory obligation.Some questions to ask yourself:Are server logs checked for untoward activity?Do you have a reporting policy if something is amiss?Did you design security in for the start of your application design?Do you log for example failed logons?Do you run tools to check for code integrity?Is my defense, a strategy of defense in depth?Do you realise that 60% of hack attacks are internal?Whilst SQL Injection is a problem that affects practically all application code platforms, within Microsoft Applications do you run FXCOP? Do you run any of the other free tools for checking?

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