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Articles indexed Saturday June 5 2010

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  • Help for creating a random String

    - by Max
    I need to create a random string which should be between the length of 6 to 10 but it sometimes generates only about the length of 3 to 5. Here's my code. Can anyone would be able to find out the problem? :( int lengthOfName = (int)(Math.random() * 4) + 6; String name = ""; /* randomly choosing a name*/ for (int j = 0; j <= lengthOfName; j++) { int freq = (int)(Math.random() * 100) + 1; if(freq <= 6){ name += "a"; }if(freq == 7 && freq == 8){ name += "b"; }if(freq >= 9 && freq <= 11){ name += "c"; }if(freq >= 12 && freq <= 15){ name += "d"; }if(freq >= 16 && freq <= 25){ name += "e"; }if(freq == 26 && freq == 27){ name += "f"; }if(freq == 28 && freq == 29){ name += "g"; }if(freq >= 30 && freq <= 33){ name += "h"; }if(freq >= 34 && freq <= 48){ name += "i"; }if(freq == 49 && freq == 50){ name += "j"; }if(freq >= 51 && freq <= 55){ name += "k"; }if(freq >= 56 && freq <= 60){ name += "l"; }if(freq == 61 && freq == 62){ name += "m"; }if(freq >= 63 && freq <= 70){ name += "n"; }if(freq >= 71 && freq <= 75){ name += "o"; }if(freq == 76 && freq == 77){ name += "p"; }if(freq == 78){ name += "q"; }if(freq >= 79 && freq <= 84){ name += "r"; }if(freq == 85 && freq == 86){ name += "s"; }if(freq == 87 && freq == 88){ name += "t"; }if(freq >= 89 && freq <= 93){ name += "u"; }if(freq == 94){ name += "v"; }if(freq == 95 && freq == 96){ name += "w"; }if(freq == 97){ name += "x"; }if(freq == 98 && freq == 99){ name += "y"; }if(freq == 100){ name += "z"; } }

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  • WPF: How do I debug binding errors?

    - by Jonathan Allen
    I'm getting this in my output Window: System.Windows.Data Error: 4 : Cannot find source for binding with reference 'RelativeSource FindAncestor, AncestorType='System.Windows.Controls.ItemsControl', AncestorLevel='1''. BindingExpression:Path=VerticalContentAlignment; DataItem=null; target element is 'ListBoxItem' (Name=''); target property is 'VerticalContentAlignment' (type 'VerticalAlignment') This is my XAML, which when run looks correct <GroupBox Header="Grant/Deny Report"> <ListBox ItemsSource="{Binding Converter={StaticResource MethodBinder}, ConverterParameter=GrantDeny, Mode=OneWay}"> <ListBox.ItemTemplate> <DataTemplate> <StackPanel Orientation="Horizontal"> <Label Content="{Binding Entity}"/> <Label Content="{Binding HasPermission}"/> </StackPanel> </DataTemplate> </ListBox.ItemTemplate> </ListBox> </GroupBox>

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  • speeding up parsing of files

    - by user248237
    the following function parses a CSV file into a list of dictionaries, where each element in the list is a dictionary where the values are indexed by the header of the file (assumed to be the first line.) this function is very very slow, taking ~6 seconds for a file that's relatively small (less than 30,000 lines.) how can I speed it up? def csv2dictlist_raw(filename, delimiter='\t'): f = open(filename) header_line = f.readline().strip() header_fields = header_line.split(delimiter) dictlist = [] # convert data to list of dictionaries for line in f: values = map(tryEval, line.strip().split(delimiter)) dictline = dict(zip(header_fields, values)) dictlist.append(dictline) return (dictlist, header_fields) thanks.

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  • where is "create instance" menu in visual studio 2010?

    - by austin powers
    Hi, in visual studio 2008 there is a sub-menu called "create instance" which is resides in class designer. Today I've opened VS.net 2010 and then opened class designer and create my class over there and when I wanted to test my class with the help of "create instance" option there was no such option available in vs.net 2010. and I've googled about it a little bit but no answer at all so I decided to mention about it here. where can I find this menu in vs.net 2010? regards.

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  • ViewController vs. View

    - by James
    Trying to wrap my head around the apple design scheme. I have a UIViewController and the corresponding XIB file that has my main screen in my application. I want to have a button on this XIB that displays another "form" (this is my disconnect) in the foreground where the user selects from a myriad of choices, then it hides that "form" and goes back to the first one. I'm completely lost here. Initially I thought I'd just add another view and set the self.view of my controller to the new view, add another IBAction and call it a day, but I can't seem to make that work. For sake of argument, say I want to "gray out" the current form, have a modal type window that takes up roughly 60% of the screen and requires you select an option, then it hides itself and we go back to normal. What is the standard approach here? Thanks

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  • Receiving data from a USB device in C or C++

    - by Midas
    It starts to bore me that I always have to ask questions about trifles. I simply need a list of all plugged in USB devices and have the user select one to let the console application receive any data the USB device sends. I can then start playing around with the data in my program. I don't want to use library's, only standard C++ functions, and the program should work in Windows 98.

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  • COnditional mount in LInux

    - by o_O Tync
    I have a mount point — let it be /media/question — and two possible devices: a physical HDD and a remote NFS folder. Sometimes I plug the device in physically, in other cases I mount it via NFS. Is there a way to specify both of them in fstab so that executing mount /media/question will preferably choose physical volume, and when it's not available — NFS?

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  • Match a word with similar words using Solr?

    - by fayer
    I want to search for threads in my mysql database with Solr. But i want it to not just search the thread words, but for similar words. Eg. if a thread title is "dog for sale" and if the user searches for dogs the title will be in the result. and also if a user searches for "mac os x" the word "snow leopard" will appear. and the ability to link words the application thinks is related eg. house and apartment. how is this kind of logic done? i know that you can with solr look up words in a dictionary file you create/add, so solr will look for dogs and see what related words there are (eg. dog). but where do you find such a dictionary? i have no idea about this kind of implementation. please point me into right direction. thanks

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  • Does the following indicate a bad design?

    - by Mewzer
    Hello, I was wondering whether you think the following code usually indicates a bad design ... class X { public: ... private: Y y; }; Class Y { public: Y( X& value ){ x = value; }; private: X& x; } (i.e. there is some sort of cyclic dependency between the classes X and Y).

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  • grails 1.3.1 Error executing script GenerateViews:

    - by mswallace
    Here is the lay of the land. I have an app that I have created. I uninstalled hibernate, installed app-engine plugin and am using jdo. I am able to create a domain-class but the when I run generate-all I run into the following error. Oh and I did try just generating the controller for the domain class and that seemed to work fine but then after that I try just generate-views on the same domain class and I also get the following error. Error executing script GenerateViews: java.lang.reflect.InvocationTargetException java.lang.reflect.InvocationTargetException at gant.Gant$_dispatch_closure5.doCall(Gant.groovy:391) at gant.Gant$_dispatch_closure7.doCall(Gant.groovy:415) at gant.Gant$_dispatch_closure7.doCall(Gant.groovy) at gant.Gant.withBuildListeners(Gant.groovy:427) at gant.Gant.this$2$withBuildListeners(Gant.groovy) at gant.Gant$this$2$withBuildListeners.callCurrent(Unknown Source) at gant.Gant.dispatch(Gant.groovy:415) at gant.Gant.this$2$dispatch(Gant.groovy) at gant.Gant.invokeMethod(Gant.groovy) at gant.Gant.executeTargets(Gant.groovy:590) at gant.Gant.executeTargets(Gant.groovy:589) Caused by: java.lang.reflect.InvocationTargetException at SimpleTemplateScript1.run(SimpleTemplateScript1.groovy:43) at _GrailsGenerate_groovy.generateForDomainClass(_GrailsGenerate_groovy:85) at _GrailsGenerate_groovy$_run_closure1.doCall(_GrailsGenerate_groovy:50) at GenerateViews$_run_closure1.doCall(GenerateViews.groovy:33) at gant.Gant$_dispatch_closure5.doCall(Gant.groovy:381) ... 10 more Caused by: java.lang.NoClassDefFoundError: org/hibernate/mapping/Value ... 15 more Caused by: java.lang.ClassNotFoundException: org.hibernate.mapping.Value at org.codehaus.groovy.tools.RootLoader.findClass(RootLoader.java:156) at java.lang.ClassLoader.loadClass(ClassLoader.java:307) at org.codehaus.groovy.tools.RootLoader.loadClass(RootLoader.java:128) at java.lang.ClassLoader.loadClass(ClassLoader.java:248) ... 15 more --- Nested Exception --- java.lang.reflect.InvocationTargetException at SimpleTemplateScript1.run(SimpleTemplateScript1.groovy:43) at _GrailsGenerate_groovy.generateForDomainClass(_GrailsGenerate_groovy:85) at _GrailsGenerate_groovy$_run_closure1.doCall(_GrailsGenerate_groovy:50) at GenerateViews$_run_closure1.doCall(GenerateViews.groovy:33) at gant.Gant$_dispatch_closure5.doCall(Gant.groovy:381) at gant.Gant$_dispatch_closure7.doCall(Gant.groovy:415) at gant.Gant$_dispatch_closure7.doCall(Gant.groovy) at gant.Gant.withBuildListeners(Gant.groovy:427) at gant.Gant.this$2$withBuildListeners(Gant.groovy) at gant.Gant$this$2$withBuildListeners.callCurrent(Unknown Source) at gant.Gant.dispatch(Gant.groovy:415) at gant.Gant.this$2$dispatch(Gant.groovy) at gant.Gant.invokeMethod(Gant.groovy) at gant.Gant.executeTargets(Gant.groovy:590) at gant.Gant.executeTargets(Gant.groovy:589) Caused by: java.lang.NoClassDefFoundError: org/hibernate/mapping/Value ... 15 more Caused by: java.lang.ClassNotFoundException: org.hibernate.mapping.Value at org.codehaus.groovy.tools.RootLoader.findClass(RootLoader.java:156) at java.lang.ClassLoader.loadClass(ClassLoader.java:307) at org.codehaus.groovy.tools.RootLoader.loadClass(RootLoader.java:128) at java.lang.ClassLoader.loadClass(ClassLoader.java:248) ... 15 more

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  • Mustache.js render technique

    - by PanosJee
    Hello everyone, i am trying to use mustache.js to render some JSON in the browser. What i want to do is: <li> <span class="label">Location: </span> {{#locations}} {{.}}<span class="social-small-size "></span> {{/locations}} </li> The locations is a js array [["Pendéli, Attiki, Greece", "facebook"], ["Greece", "linkedin"]] Initially i tried to use {{%IMPLICIT-ITERATOR iterator=loc}} in my attempt to split the data in the view. So i the actual rendering code was {{loc[0]}}<span class="social-small-size {{loc[1}}"></span> But that did n t work altough the loop worked and i got 2 spans but without any content. I think the PRAGMA is what I need but I didn 't figure it out. Any hints ? :)

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  • Twitter RSS pubDate format

    - by Dave
    In a twitter RSS feed the pubDate is published as Sat, Jun 5, 2010 19:20 Using PHP, whats the best way to convert this into the time lasped since published. For eaxmple, posted 4 minutes ago posted 1 hour ago posted 4 hours ago posted 1 day ago posted 2 days ago posted 1 month ago posted 2 months ago You help much appreciated

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  • jquery function inside .ready

    - by phil
    Could anyone tell me why 'function()' right after .ready is needed to make the script work? <html> <head> <script type="text/javascript" src="jquery.js"></script> <script type="text/javascript"> $(document).ready(function(){ $("button").click(function(){ $("p").hide(); }); }); </script> </head> <body> <h2>This is a heading</h2> <p>This is a paragraph.</p> <p>This is another paragraph.</p> <button type="button">Click me</button> </body> </html>

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  • Reading the .vcproj file with C#

    - by Dulantha Fernando
    We create the vcproj file with the makefileproj keyword so we can use our own build in VS. My question is, using C#, how do you read the "C++" from the following vcproj file: <?xml version="1.0" encoding="Windows-1252"?> <VisualStudioProject ProjectType="Visual C++" Version="8.00" Name="TestCSProj" ProjectGUID="{840501C9-6AFE-8CD6-1146-84208624C0B0}" RootNamespace="TestCSProj" Keyword="MakeFileProj" > <Platforms> <Platform Name="x64" /> <Platform Name="C++" ===> I need to read "C++" /> </Platforms> I used XmlNode and got upto the second Platform: String path = "C:\\blah\\TestCSProj\\TestCSProj\\TestCSProj.vcproj"; FileStream fs = new FileStream(path, FileMode.Open, FileAccess.Read, FileShare.ReadWrite); XmlDocument xmldoc = new XmlDocument(); xmldoc.Load(fs); XmlNodeList oldFiles = xmldoc.GetElementsByTagName("Platform"); XmlAttribute name = oldFiles[1].Attributes[0]; Console.WriteLine(name.Name); This will print Name, but I need "C++". How do I read that? Thank you very much in advance

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  • Recommendations for technical (programming) podcasts or audio books?

    - by David Pfeffer
    I'd like to do some professional development during my commute, but I find that reading programming texts on the bus and train cause nausia because of how much I have to focus on them. I'd like to find some good technical programming audio books, either free or for purchase/download and some good technical podcasts. What are the best programming audio books or podcasts out there, and where can they be found?

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  • Using finch first time. How to play mp3,ogg or other formats (wav files to big) ?

    - by Allisone
    My *.wav's work as expected. But wav files are to big, so I want to play *.mp3 or *.ogg but it doesn't work. I use this lines of code found in the finch Demo project engine = [[Finch alloc] init]; sitar = [[Sound alloc] initWithFile:RSRC(@"sitar.wav")]; [sitar play]; So I only change sitar.wav into my .mp3 filename. Note 1: It mustn't be mp3 or ogg, any file format not as huge as wav should be ok, but which ? Note 2: I didn't know how to use sound, so I searched and found finch here at stackoverflow. It looks easy, so I would like to use that, but if you know some other easy way to play that sound files (ambient + effects sound with compressed codec) I would also switch to that other technique.

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  • backing up user data

    - by shani
    in my app the user saves data in archive using core data and sqllite. 1. is there a way letting him the option to back up his data and restoring it in the future? 2. does the user info is backed up with the iphone regular back up? thanks shani

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  • Haskell lazy I/O and closing files

    - by Jesse
    I've written a small Haskell program to print the MD5 checksums of all files in the current directory (searched recursively). Basically a Haskell version of md5deep. All is fine and dandy except if the current directory has a very large number of files, in which case I get an error like: <program>: <currentFile>: openBinaryFile: resource exhausted (Too many open files) It seems Haskell's laziness is causing it not to close files, even after its corresponding line of output has been completed. The relevant code is below. The function of interest is getList. import qualified Data.ByteString.Lazy as BS main :: IO () main = putStr . unlines =<< getList "." getList :: FilePath -> IO [String] getList p = let getFileLine path = liftM (\c -> (hex $ hash $ BS.unpack c) ++ " " ++ path) (BS.readFile path) in mapM getFileLine =<< getRecursiveContents p hex :: [Word8] -> String hex = concatMap (\x -> printf "%0.2x" (toInteger x)) getRecursiveContents :: FilePath -> IO [FilePath] -- ^ Just gets the paths to all the files in the given directory. Are there any ideas on how I could solve this problem? The entire program is available here: http://haskell.pastebin.com/PAZm0Dcb

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  • Should the entity framework + self tracking entities be saving me time

    - by sipwiz
    I've been using the entity framework in combination with the self tracking entity code generation templates for my latest silverlight to WCF application. It's the first time I've used the entity framework in a real project and my hope was that I would save myself a lot of time and effort by being able to automatically update the whole data access layer of my project when my database schema changed. Happily I've found that to be the case, updating my database schema by adding a new table, changing column names, adding new columns etc. etc. can be propagated to my business object classes by using the update from database option on the entity framework model. Where I'm hurting is the CRUD operations within my WCF service in response to actions on my Silverlight client. I use the same self tracking entity framework business objects in my Silverlight app but I find I'm continually having to fight against problems such as foreign key associations not being handled correctly when updating an object or the change tracker getting confused about the state of an object at the Silverlight end and the data access operation within the WCF layer throwing a wobbly. It's got to a point where I have now spent more time dealing with this quirks than I have on my previous project where I used Linq-to-SQL as the starting point for rolling my own business objects. Is it just me being hopeless or is the self tracking entities approach something that should be avoided until it's more mature?

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  • Scaled live iPhone Camera view in center, "CGAffineTransformTranslate" not working

    - by Gavin
    Hi, I have a little problem which I could not solve. I really hope someone can help me with that. I wanted to resize the live camera view and place it in the center, using the following code below: picker.cameraViewTransform = CGAffineTransformScale(picker.cameraViewTransform, 0.5, 0.56206); picker.cameraViewTransform = CGAffineTransformTranslate(picker.cameraViewTransform, 80, 120); But all I got was a scaled 1/2 sized view on the top left of the screen. It seems as though "CGAffineTransformTranslate" does nothing at all. The translation didn't work even when I used: picker.cameraViewTransform = CGAffineTransformMake(1, 0, 0, 1, 80, 120); The translation portion seems to have no effect on the live camera view. Hope someone can enlighten me. Thanks.

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  • Windows 7 - Virtual PC or Workstation 7.1 - Not working 4 me

    - by George
    I have a Windows 7 Ultimate - 64 bit Operating System When I'm trying to create virtual machine Windows Server 2008 64 bit I'm getting the same error neither with Virtual PC or Workstation 7.1 Error: 64 bit guest operating systems are not supported by this host and will not run and Status: 0xc000035a info: Attempting to load a 64 bit application however this CPU is not compatible with 64 bit mode. Is it any settings I'm missing or can you give me a suggestion about workaround, or what do I need to make it work.

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  • Intercepting static and dynamic links using javascript

    - by soren.qvist
    Hi, I'm currently developing an ajax application and I'm looking for a feature that lets me intercept all static and dynamic links using javascript. The links look like these: <a href="link1/">link 1</a> <a href="link2/">link 2</a> etc. I then want the browser to redirect to: current.page/#link1/ rather than current.page/link1/. I'm using jQuery, so the live() function is an option, however using that as a solution just seems rather sluggish to me(am I hysterical?). If there is a way to intercept ALL links on a page, maybe through detecting a change in the address, that would greatly help. I've tried a few plugins for jQuery (jQuery address & SWFaddress) but they only seem to have event handlers that respond to changes in anchor tags in the address. Any ideas? thanks for your time

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