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  • How to balance load in a Apache + Mongrel application

    - by Will
    I was wondering if someone can explain how can a rails application be balanced. Two questions: Does it even help having separate rails applications reading from the same database in the same dedicated server? I understand Apache can balance load installing some extra modules? am i right? how can we accomplish this? (please provide explanation for dummies)

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  • Chrome: Flash Video Player doesn't work

    - by Patrick
    hi, could you explain me why my flash video player doesn't work in Chrome while it perfectly works in other browsers ? (Firefox and IE) This is the link: http://www.sanstitre.ch/drupal/portfolio?tid[0]=66 You'll see it flickering... thanks

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  • How do I prevent users from entering a blank value in an Excel sheet?

    - by Tola Odejayi
    I want to restrict users to entering either just 0 or 1 in an Excel 2007 sheet. I use the Data Data Validation dialog to do this, but I'm finding that it doesn't stop them from entering blanks. What I would like is for there to be a prompt when they enter blanks, just like the one that appears when they enter any other non-blank data that is not 0 or 1. I plan to fill the sheet with 0s before applying the validation, so there should not be a problem with erroneous data. Also, I'm open to using VBA to fix this problem.

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  • What is a good metaphor for c memory management?

    - by fsmc
    I'm trying to find a good metaphor to explain memory allocation, initialization and freeing in c to a non technical audience. I've heard pass-by-reference/value talked about quite well with postal service usage, but not so much for allocation/deallocation. So for I've thought about using the idea of renting a space might work, but I wonder if the SO crew can provide something better.

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  • android bluetooth

    - by yoavstr
    can someone explain to me the concept behind using bluetooth my project in my studies is to make an android app using bluetooth, SQLLIGHT and google app the app itself is a very easy one but i just dont get the tools i need to use : how does the bluetooth works? is there a simple example ? the concept behind android GUI (i allready nade one but i think i am not fully understood his power)? note : i am using v 2.1

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  • UIButton as a subview in UILabel

    - by Jayshree
    hi. i am trying to dynamically add a UIbutton as a subview to UIlable. but i am not able to click the button. it seems that the lable doesnt allow the buttonTapped event to occur. can somebody explain what exactly is happening here. and can anybody give me an alternative for this. thnx

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  • Which eclipse files belong under Version Control

    - by sblundy
    Which eclipse files is it appropriate to put under source control, aside from the sources obviously. In my project, specifically, I'm wondering about: .metadata/* project-dir/.project project-dir/.classpath project-dir/.settings/* If there are any of these for which is depends, please explain your guidelines.

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  • grep options (unix)

    - by lego69
    hello everyone, can You explain please, can grep pick rows if at least one element from the list appeared, for exmaple grep "hello world" file1 grep must give me all rows which have or word hello or world or both of them, thanks in advance

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  • HP MSA 1000 SAN: Can I use 1 array/shelf?

    - by CC
    Hi all, I'm planning some expansion on an HP MSA1000 SAN. My boss says that we need to have two separate arrays on the new enclosure, one for Bays 1-7, the other for Bays 8-14. Is there any reason that we need to do this? My plan was to have the entire expansion shelf be 1 array, then create RAID 6 logical drives from that. I don't understand what splitting drives into separate arrays gain us. We don't have dual controllers, so there's no benefit there. Thanks, CC

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  • How does the Built-in Bindings of Google Guice work?

    - by lony
    Hello, I tried Google Guice the first time and find it very nice. But, when I reached the part of Built-in Bindings I do not understand the examples. For me it looks like I can use it for logging like an interceptor, but I don't know how. Could someone of you explain this type of Binding and how I can use it? And maybe (if it's possible) use it for logging?

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  • C# Why does code compile fine when there is an ambiguous virtual method?

    - by Jimbo
    I have a class (Class B) that inherits another class (Class A) that contains virtual methods. Mistakenly, I omitted the override keyword when declaring a (supposed to be) overriding method in Class B. Class A public class ClassA{ public virtual void TestMethod(){ } } Class B public class ClassB : ClassA{ public void TestMethod(){ } } The code compiled without a problem. Can anyone explain why?

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  • Why does this eval not work in Ruby

    - by Anil
    Can you explain this? I want to eval values and calculations from two different sources. One source gives me the following info(programmatically): 'a = 2' The second source gives me this expression to evaluate: 'a + 3' This works: a = 2 eval 'a + 3' This also works: eval 'a = 2; a + 3' But what I really need is this, and it doesn't work: eval 'a = 2' eval 'a + 3' I would like to understand the difference, and how can I make the last option work. Thanks for your help.

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  • parseInt('07')=='7', but parseInt('08')=='0'? why?

    - by KOHb
    Here's a simple script that gives a strange result: alert(parseInt('01')+' - '+parseInt('02')+' - '+parseInt('03')+' - '+parseInt('04')+' - '+parseInt('05')+' - '+parseInt('06')+' - '+parseInt('07')+' - '+parseInt('08')+' - '+parseInt('09')+' - '+parseInt('10')); I would expect it to give 1 - 2 - 3 and so on, but it gives me this (in FireFox, Chrome and IE6): 1 - 2 - 3 - 4 - 5 - 6 - 7 - 0 - 0 - 10 Can someone please explain me why?

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  • named anchors not working in safari

    - by David
    Hi there, can anyone explain why named anchor tags would not work in safari but work fine in other browsers: ie, ff, opera, chrome. I have some links to different areas of the same page and nothing happens when clicking on them in safari only. All the other browsers mentioned take me to that area of the page. I have tried using both the id and the name attribute for the anchors but neither makes any difference.

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  • Sockets: I/O Error 32

    - by Genesis
    Could someone please explain what an I/O Error 32 refers to in the context of a network socket? I have a multithreaded Socks5 server written using Poco SocketReactors and am getting this error when the server load reaches a certain point. The exception is thrown within my onReadable handlers at the same time across all threads which have connections associated with them. The only other thing I am doing within those threads is std::cout but I am not sure if this is a potential cause.

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  • Why 10675199.02:48:05.4775807 TimeSpan Maximum for CompilationSection?

    - by Alex
    I was looking at the metadata for System.Web.Configuration.CompilationSection, and noticed the following attribute on the TimeSpan BatchTimeout property: [TimeSpanValidator(MinValueString = "00:00:00", MaxValueString = "10675199.02:48:05.4775807")] Could someone explain why this is the allowed max value? TimeSpan itself has an upper limit, so why would there be another value validation, and why this number?

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  • Problem with setProgressDrawable

    - by Martin
    I am having problem with setting a new Drawable to my ProgressBar. If I use the setProgressDrawable() inside onCreate() method it works great. But when I try to call the same method inside a Handler post callback it doesn't work and the progressbar disapears. Can someone explain this behaviour? How can I solve this problem?

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