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  • Average Difference and Direction Between Values in Excel with Blanks

    - by 114
    I have a sheet that looks something like this: Sheet 1 1 2 3 4 5 6 7 8 9 10 11 1 6 2 3 5 3 4 2 4 9 4 5 6 4 6 6 7 5 3 3 3 10 8 4 8 8 9 4 11 12 12 6 10 11 8 5 5 4 9 4 7 6 What I would like to be able to do is find the average difference and direction between values in each column. For example, the first 4 rows would look like: Average Difference # + Movements # -Movements 1 2 2 1 0 3 4 (2+5+5)/3 2 1 Blanks represent N/A values due to insufficient information, and differences are calculated successively i.e. col2-col1, col3-col2, col4-col3 If I just take the differences and make a duplicate table with the formula =C2-B2 copied across issues arise whenever there is a blank space between two values or at the beginning of the row. Is there an easy way to fix this or another way to do this that I might be missing?

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  • How does Game Salad compare with Cocos2D in terms of 2D game development?

    - by jih
    I want to make some 2d games for iOS. I first come across cocos2d and kobold but then wanted something more graphical for rapid prototyping. I then found Game Maker which doesn't support iOS but is fairly easy to learn and then found Game Salad which supports iOS as well as other platforms. I know this question has been ask before but I want to know in terms of the types of games I want to develop what an learning investment path would be best. The types of games genre I am interest are: Side scrollers Simple games like diamond dash or ninja fruits, shanghai, etc Old fashioned zelda or dragonquest type (nintendo fan here:-) 2d adventure RPG games (real time or turn based) Mystery turn based games like carmen sandiego, wizardry, myst etc. So now the question becomes for me becomes which game development environment should I invest my time in learning. Game Salad or cocos2d? To make that decision I was wondering if experienced game programmers and help with some pointers: It would seem game salad would be great for quickies being graphical but in terms of 2d platform games etc would there be speed/performance/feature penalties? Are there certain 2d games genre of the 4 above that Game salad is better at while certain type cocos2d would be better at?

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  • Can I manually add a thumbnail web page to the Chrome homepage?

    - by andygrunt
    Is there a way to manually add a web page to the 8 thumbnails that appear when you open Chrome? I want to add Google Maps for easy access. The Google front page already shows up so I presume the Google Maps page never will as it's a subset of Google (i.e. I get to it via the main Google front page). I know I can add a shortcut to the toolbar but would rather add it as a thumbnail. And while I'm here, is it possible to increase the number of thumbnails that appear? I'm running the release/stable version of Chrome in Windows XP.

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  • Tool to allow Kerberos Authenticated users to modify Firewall settings

    - by Lars Hanke
    I run a firewall on a central router. Recently, several users want to use Skype. Since firewalling Skype virtually means to switch the firewall off, I consider to allow users to temporarily punch holes for their system. Since the users have no accounts on the router, I consider using Kerberos for authentication and authorization. The router is a Debian Squeeze box, with minimal configuration, i.e. no web-server, database or similar gimmicks. Does anyone know an existing solution, which could be used for that purpose? Or does anybody know easy to use and well documented frameworks in say Perl, Python, C, C++, ... making the set-up of a Kerberos authenticated Client and Server application really simple?

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  • Node.js installation on Debian 6

    - by pvorb
    I used to use this method for node.js installation on Debian, since it was easy and everything worked fine. Even with multiple users. Since version 0.6.18~dfsg1-1 of the sid package, installation removes openssh-server. But I need OpenSSH to connect to my server. Is there any possibility to install Node.js via APT or do I have to compile it manually? This is my APT preferences file: Package: * Pin: release a=stable Pin-Priority: 800 Package: * Pin: release a=testing Pin-Priority: 650 Package: * Pin: release a=unstable Pin-Priority: 600

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  • Artists and music - Need Help Deciding on a CMS

    - by infty
    A friend has asked me to build a site with the following options: staff members must be able to add new music and artists to the page a gallery must be provided - it is also good if each artist has the ability to have his/her own smaller gallery users must be able to vote for artists users must be able to alter in discussions (forums or comments sections) staff members must be able to blog staff members must be able to write articles I did a small project where i actually implemented all of these features, but I want to use an existing content management system for all of these features so that future developers can, hopefully, more easy extend the website. And also, so that I don't have to provide too much documentation. I have never developed a website using an external CMS like Drupal or Wordpress and after seeing hours of tutorial videos of both systems, I still can't make up my mind on whether i should : a) use Drupal 7 b) use Wordpress 3 c) create my own cms I can imagine that staff members would also want to create content using iPhone or android based mobile devices, but this is not a required feature. Can someone, with experience, please tell me about their experiences with larger projects like this? The site will have approximately 400 000 - 500 000 visitors (not daily visitors, based on numbers from last year in a period of 4 months)

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  • Can Windows Home Server be used on an active directory domain?

    - by Parvenu74
    The situation: an Active Directory network with a few dozen machines. Most of the machines have the same vanilla image applied to them so if there was a hard drive failure getting the machine back up to the standard network image would be quick and easy. However, there are a handful of (eight) machines which have rather unique setups (accounting, developers, the "artist" with CS4 and such). For these machines we would like to use Windows Home Server since the backups are automatic and recovery from a machine failure is quite painless. The question though is whether or not WHS can be used on an A/D network. If not, what "set it and forget it" backup/imaging product is recommended for this scenario?

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  • Backup windows image to thumb drive?

    - by Dean
    I recently bought a new netbook from Malasia. It doesn't have a brand name, or officially supporting drivers. It came with a version of windows, and working drivers for all the hardware - but I want to install Ubuntu on here. Being a netbook, it has no CD/DVD drive. I want some free easy to use software to image the entire drive onto a thumb drive, which I could later use to boot up a recovery program to reinstall windows, should I fail to get all the hardware supported on Linux. I have already done some research and found driver backup/restore software in this thread, and will probably use that failing a more all-encompasing solution.

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  • Game programming : C# or C++?

    - by Chronix
    Ok so the faq says : "What language should I learn next? (Unless you have a specific requirement and don't know which language meets that requirement.)" so I guess this is not against the rules of questions. So, I've decided what I really want is to do Game Programming. So the question is, as a 18 years old who wants to learn self taught programming, what is the most suited programming language between C# and C++? ( I should state that I don't care about unix because I believe windows will be still the most used os ) I know the basics of C++, but none about C#. I know that C++ has more tutorials guides, dlls and stuff like that, while C# doesn't, but it's far easier to learn and to use for a single person to develop a program, but I've read even if the program is obfuscated it's easy to get the source of it. Well, I kinda want to focus on basic a lot first, I must say that I have a preference for C++ just because it feels more suitable to me, but I must consider that I work alone.. So even if I like it, it may not be the best thing to do. I am really not sure of which one to go for, i've read a lot of threads on various websites and it looks like C# is becoming more popular than C++. But yeah, that said, I also specified I want to do Game Programming. So I need to know some better points than just "C# is easier because of .net memory handling while C++ isnt" because I couldn't just find it. I hope the thread won't be closed because I've read the faq and I have a specific requirement. Thank you, and if you need more details you're free to ask me, but I think just by saying game programming and that I'd work alone should be enough!

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  • True column-mode (block-selection and editing) text editor solution?

    - by tamale
    In windows, I used to use a text editor called crimson editor which featured the best column-mode editing support I have yet to use. When enabled via a simple Alt-C shortcut, selections could be made with the mouse or cursor keys and they would be visual blocks rather than wrapped-lines. These selections could be deleted, moved, copied, pasted, and all of the operations just made sense. You could also just start typing, and you'd get a column of the characters as you're typing. There are multiple ways of getting parts of the these features working separately discussed on this forum thread, but no one has yet to provide a solution that provides this all-encompassing and easy-to-use method. If someone could point me to a gedit plugin where this work is actively being pursued, perhaps I could help with the coding myself. If someone is aware of a text editor that already provides this full functionality, I'd appreciate the info. Running crimson editor through wine and the close-but-not-quite multi-edit plugin for gedit are the temporary solutions I'm 'getting by with' for the time being.

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  • Windows 2008 Best Raid Configuration

    - by Brandon Wilson
    I have 4 2TB hard drives and I was thinking about using Raid 10. This would give me 4TB correct? My next question is would it be easy to add more hard drives to the raid array. For example if I bought another hard drive can I add it to the array without backing up any data? Basically I want to be able to start off with 4TB and when the space becomes full add more space as needed. If this isn't possible with Raid 10, is it possible with any Raid configuration. Any suggestions would be appreciated. Thank you.

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  • Freelance for moderately complex admin support

    - by ongraphs
    Mailing lists and question/answers works great for problems that are independently encountered by several people. But sometimes we (as in experienced amateurs) run into problems that aren't so common, nobody has blogged about it and experts advice not readily available. For IT-admin related stuff can someone please recommend how can amateurs pay experts and get hands on advice. The kinds of problems I am talking about are like setting up nxserver or openvpn on freeBSD box. The install/config is not so simple, the documentation not easy for non-it professionals. Therefore getting step by step advice would be quite helpful. Thanks sandeep

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  • Aggressive Auto-Updating?

    - by MattiasK
    What do you guys think is best practice regarding auto-updating? Google Chrome for instance seems to auto-update itself as soon as it get's a chance without asking and I'm fine with it. I think most "normal" users benefits from updates being a transparent process. Then again, some more technical users might be miffed if you update their app without permission, as I see it there's 3 options: 1) Have a checkbox when installing that says "allow automatic updates" 2) Just have a preference somewhere that allows you to "disable automatic updates" so that you have to "check for updates manually" I'm leaning towards 2) because 1) feels like it might alienate non-technical users and I'd rather avoid installation queries if possible. Also I'm thinking about making it easy to downgrade if an upgrade (heaven forbid) causes trouble, what are your thoughts? Another question, even if auto-updates are automatically, perhaps they should be announced. If there's new features for example otherwise you might not realize and use them One thing that kinda scares me though is the security implications, someone could theorically hack my server and push out spyware/zombieware to all my customers. It seems that using digital signatures to prevent man-in-the-middle attacks is the least you could do otherwise you might be hooked up to a network that spoofs the address of of update server.

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  • How to detect an iPhone connecting a network?

    - by JayCrossler
    I've noticed through watching Wireshark that when an iPhone connects to a wifi network, it sends out a few IGMP/MDNS packets to 224.0.0.251 (LAN broadcast, I think). Is there any easy way to watch for these packets and then either run a script or send an event? Or, is the best way to just run a packet sniffer? Any simple ones that can send events or execute curl commands when a filter is triggered? When I run nc -u -l 5353 I get: My-Name-iPhonelocal??? x???)?? ??cc^C Can I do something like: nc -u -l 5353 | grep iPhonelocal | execute command...

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  • how to override ckeditor events [migrated]

    - by joe
    I am new to ckeditor, I have hard time figuring this issue out. due to my html design; if I try to use the link editor dialog while my ckeditor is maximized, it just doesn't show up, I understand that ckeditor is the top most object in my html page and the link dialog comes underneath it. if now I bring ckeditor to its normal state I will be able to see and use the link dialog. my idea is to slightly override the link button click event as follows: if the editor is in full screen mode, bring it back to the normal state. and keep a flag somewhere so that when I close the link dialog, I can decide whether to bring back the ckeditor to a maximized mode again. now this is easy logic except that I do not know how to override the click event of the link button and keep it work as expected. here's what I have: $().ready(function () { var editor = $('#txa').ckeditor(); CKEDITOR.plugins.registered['link']= { init : function( editor ) { var command = editor.addCommand( 'link', { modes : { wysiwyg:1, source:1 }, exec : function( editor ) { if(editor.commands.maximize.state == 1 ){ alert("maximized"); //....here bring back the editor to UN-maximized state and let the link button event click do the default behavior } else { alert("normal state"); } //2 is normal state //1 is maximized } } ); editor.ui.addButton( 'link',{label : 'YOUR LABEL',command : 'link'}); } } }); html part to make the exemple work: <div> <textarea id="txa"> </textarea> </div> TO BE SHORT: http://jsfiddle.net/Q43QP/ if the editor is maximized, bring it to normal state then show the link dialog.

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  • Agressive Auto-Updating?

    - by MattiasK
    What do you guys think is best practice regarding auto-updating? Google Chrome for instance seems to auto-update itself as soon as it get's a chance without asking and I'm fine with it. I think most "normal" users benefits from updates being a transparent process. Then again, some more technical users might be miffed if you update their app without permission, as I see it there's 3 options: 1) Have a checkbox when installing that says "allow automatic updates" 2) Just have a preference somewhere that allows you to "disable automatic updates" so that you have to "check for updates manually" I'm leaning towards 2) because 1) feels like it might alienate non-technical users and I'd rather avoid installation queries if possible. Also I'm thinking about making it easy to downgrade if an upgrade (heaven forbid) causes trouble, what are your thoughts? Another question, even if auto-updates are automatically, perhaps they should be announced. If there's new features for example otherwise you might not realize and use them One thing that kinda scares me though is the security implications, someone could theorically hack my server and push out spyware/zombieware to all my customers. It seems that using digital signatures to prevent man-in-the-middle attacks is the least you could do otherwise you might be hooked up to a network that spoofs the address of of update server.

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  • Network configuration with limited hardware

    - by Pavel
    I have cable internet and I have two PC. One of them has wireless and ethernet, the other pc has ethernet only. Also, I have a dsl modem that has wireless builtin (some common speedstream model). My goal is to connect all of them so that both have internet access. As I understand, I have two options: connect speedstream to the cable and then connect other PC's to speedstream; OR, connect pc with wireless to the cable and then connect the other pc that has ethernet only using ethernet+wireless through speestream. First one seems to be easy, but it doesn't seem to work. What about the other choice? Is it possible to do it?

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  • So You Want To Build a SPARC Cloud

    - by user12601629
    Did you ever wish you could get the industrial strength power of UNIX/RISC with the flexibility of cloud computing?  Well, now you can!  With recent advances from Oracle it's possible to build an incredibly high-performance, flexible, available virtualized infrastructure based on Solaris and SPARC.  Here's the recipe! Authored in collaboration across the Oracle "Systems Group" team, we now have a complete best practice guide for you.  Click below to download it: Best Practices for Building a Virtualized SPARC Computing Environment Inside you'll find recommendations for how and when to leverage technologies like: SPARC T4 OVM for SPARC hypervisor (version 2.2 and newer) Solaris 11 Ops Center 12c ZFS Storage Appliance Oracle network switches Based on following these best practices, you'll be able to construct a dynamic, virtualized infrastructure that allows for: Easy, GUI-based provisioning on new VMs Automated HA failover in the event of physical server failures Automatic load balancing across a cluster of VM hosts Complete end-to-end monitoring You should download this paper and check it out.  Even if you aren't planning on buying all new hardware, and instead want to transform some existing gear into a dynamic virtualized environment then this paper will give you concrete info on what to do and the trade-offs you'll make. Have fun getting started on your journey to build a SPARC cloud!

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  • How to implement string matching based on a pattern

    - by Vincent Rischmann
    I was asked to build a tool that can identify if a string match a pattern. Example: {1:20} stuff t(x) {a,b,c} would match: 1 stuff tx a 20 stuff t c It is a sort of regex but with a different syntax Parentheses indicate an optional value {1:20} is a interval; I will have to check if the token is a number and if it is between 1 and 20 {a,b,c} is just an enumeration; it can be either a or b or c Right now I implemented this with a regex, and the interval stuff was a pain to do. On my own time I tried implementing some kind of matcher by hand, but it turns out it's not that easy to do. By experimenting I ended up with a function that generates a state table from the pattern and a state machine. It worked well until I tried to implement the optional value, and I got stuck and how to generate the state table. After that I searched how I could do this, and that led me to stuff like LL parser, LALR parser, recursive-descent parser, context-free grammars, etc. I never studied any of this so it's hard to know what is relevant here, but I think this is what I need: A grammar A parser which generates states from the grammar and a pattern A state machine to see if a string match the states So my first question is: Is this right ? And second question, what do you recommend I read/study to be able to implement this ?

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  • After a week of smooth running, my Dell t310 servername reverted to the service tag and screwed everything up!

    - by user779887
    Has this happened to anyone else? Began having a tremedous amount of problems with our brand new Dell SBS 2011 T310 server and after nearly 15 hours will Dell support, they determined that the server name hade reverted to DXXXXXXXX ("D: + the service tag). The Dell tech said that this was a major major problem. I'm the only person with any access to the machine and I didn't attempt to change the server name. The tech said it didn't look as if anyone had hacked the box but something had replaced "OurCompanyServer" with "DXX12XX" It would seem to me, simply changing the server name back to what I originally had would correct the problem, but the Dell tech said it wasn't that easy. Anyone encounter this?

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  • decouple software components via nameconvention

    - by csteinmueller
    I'm currently evaluating alternatives to refactor a drivermanagement. In my multitier architecture I have Baseclass DAL.Device //my entity Interfaces BL.IDriver //handles the dataprocessing between application and device BL.IDriverCreator //creates an IDriver from a Device BL.IDriverFactory //handles the driver creation requests Every specialization of Device has a corresponding IDriver implementation and a corresponding IDriverCreator implementation. At the moment the mapping is fix via a type check within the business layer / DriverFactory. That means every new driver needs a) changing code within the DriverFactory and b) referencing the new IDriver implementation / assembly. On a customers point of view that means, every new driver, used or not, needs a complex revalidation of their hardware environment, because it's a critical process. My first inspiration was to use a caliburn micro like nameconvention see Caliburn.Micro: Xaml Made Easy BL.RestDriver BL.RestDriverCreator DAL.RestDevice After receiving the RestDevicewithin the IDriverFactory I can load all driver dlls via reflection and do a namesplitting/comparing (extracting the xx from xxDriverCreator and xxDevice) Another idea would be a custom attribute (which also leads to comparing strings). My question: is that a good approach above layer borders? If not, what would be a good approach?

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  • Is Clonezilla a good option for a daily batch-file-based backup of a Windows XP PC?

    - by rossmcm
    Having just been through the process of rebuilding a Windows XP desktop machine when the disk died, I'm anxious to make it a lot less painful. I didn't lose any data, but reinstalling everything took ages. Clonezilla seems to be a highly mentioned free backup tool. How easy would it be to implement the following: a nightly unattended backup of the desktop's disk image to another network machine (or a second drive in the machine), hopefully with compression. restore from that image using USB boot media. so that if I come in to work and find the hard drive has tanked, it is just a matter of replacing the dead drive with a new one, booting from the USB stick, choosing the image to restore, and then finding something else to do for an hour or two. When it is finished I would hopefully be back to where I was.

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  • You cannot do cross joins in SQL Azure but there is a way around that....

    - by SeanBarlow
    So I was asked today how to do cross joins in SQL Azure using Linq. Well the simple answer is you cant do it. It is not supported but there are ways around that. The solution is actually very simple and easy to implement. So here is what I did and how I did it. I created two SQL Azure Databases. The first Database is called AccountDb and has a single table named Account, which has an ID, CompanyId and Name in it. The second database I called CompanyDb and it contains two tables. The first table I named Company and the second I named Address. The Company Table has an Id and Name column. The Address Table has an Id and CompanyId columns. Since we cannot do cross joins in Azure we have to have one of the models preloaded with data. I simply put the Accounts into a List of accounts and use that in my join.   var accounts = new AccountsModelContainer().Accounts.ToList(); var companies = new CompanyModelContainer().Companies; var query = from account in accounts             join company in                 (                       from c in companies                      select c                  ) on account.CompanyId equals company.Id             select new AccountView() {                                               AccountName = account.Name, CompanyName = company.Name,                                 Addresses = company.Addresses                         }; return query.ToList();   So as long as you have your data loaded from one of the contexts you can still execute your queries and get the data back that you want.

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  • VPN PPTPD with MPPE Support for Debian or Ubuntu

    - by user78395
    Having an unencrypted vpn connection from a windows client to linux is pretty easy by using pptpd. When I was looking for an solution for encrypted (per MPPE) connection, I found a lot of information about patching the kernel etc. - so it definitly works after some work. But all these information is pretty old (2005-2006). Is it the same solution nowadays? I am not asking for a complete instruction (only if it's short) - I am more asking for a link to the right solution.

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  • Is there any professional way to illustrate difference between 2 diagrams?

    - by lamwaiman1988
    I made a documented which is to describe the difference between the same logical structure from different version ( e.g Structure A from version 8 and Structure A from version 9 ). Luckily I've got the logical structure diagram from the 2 functional specification. I've managed to copy the image of each logical structure and paste them in MS Word and compare the 2 version side by side. I don't know if there is a standard way to illustrate the difference. I simply draw a cross over the removed logical member from the previous version and draw a rectangle around the new logical member of the next version. I know my way is kinda childish. I am wondering how to present them professionally. In addition, You won't believe this, but MS Word doesn't have a shape of CROSS, so I am actually using a multiplication sign that look like a giant monster: This is why I hate myself. Unlike 2 separated lines, this shape is easy to use, draw and resize. I am wondering if MS Word would care about a normal cross.

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