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Articles indexed in June 2010

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  • Python singleton pattern

    - by Javier Garcia
    Hi, someone can tell me why this is incorrect as a singleton pattern: class preSingleton(object): def __call__(self): return self singleton = preSingleton() a = singleton() b = singleton() print a==b a.var_in_a = 100 b.var_in_b = 'hello' print a.var_in_b print b.var_in_a Edit: The above code prints: True hello 100 thank you very much

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  • UIImagePicker and Memory Warning Level 1

    - by user262829
    Hello, Whenever I use a UIImagePicker to take a picker in my app, I get the following message in the debug console: Receive memory warning. Level=1 I am using the following code: imagePickerController = [[UIImagePickerController alloc] init]; imagePickerController.delegate = self; imagePickerController.sourceType = UIImagePickerControllerSourceTypeCamera; [window addSubview:imagePickerController.view]; imageView = [[UIImageView alloc] initWithFrame:[window bounds]]; imageView.hidden = YES; [window addSubview:imageView]; [window makeKeyAndVisible]; Does anybody have any ideals? I did not notice this error until I started using the GM Seed for SDK4.

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  • I cannot change the target .NET Framework in IIS 6

    - by David Pike
    The option to target another version of the .Net Framework is disabled on a particular test system we are using on a current project. I have tried the following without success: Killing all W3WP.EXE processesRestarting the IIS serviceRemote Debugging has been removed from the box. Just hoping for some pointers.

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  • How to convert many thousands of lines of VBScript to C#?

    - by Ross Patterson
    I have a collection of about 10,000 small VBScript programs (50-100 lines each) and a small collection of larger ones, and I'm looking for a way to convert them to C# without resorting to by-hand transliteration. The programs are automated test cases for a web application, written for HP/Mercury's QuickTest Pro, and I'm trying to turn them into test cases for Selenium. Luckily, the tests appear to be well-written, using a library of building blocks and idioms (the larger programs), so the test cases actually resemble a domain-specific language more than they do VBScript, and the QTP-ness is well-buried inside the libraries. Ideally, what I'm searching for is a tool that can do the syntactic transformation from VBScript to C# for both the dsl-ish test cases and also the more complicated building-block libraries. That would leave me with a manual cleanup of the libraries, and probably very little work on the test cases. If I could find a VBScript-to-VB.NET translator, I'd take that also, as I suspect I could compile the VB.NET and then de-compile to C# using .NET Relector or something similar. Plan B is to write a translator of my own for the test cases, since they're in a very straight-line style, but it wouldn't help with the libraries. Any suyggestions? I haven't written a compiler in at least 15 years, and while I haven't forgotten how, I'm not looking forward to it - least of all for VBScript!

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  • comparing 2 arrays on perl

    - by qrbaQ
    could someone provide a good /nice solution in perl for comparing 2 arrays (a and b ) which check if every element on array a is founded on array b (and founded only once on array b) ?

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  • Could random.randint(1,10) ever return 11?

    - by Tim Pietzcker
    When researching for this question and reading the sourcecode in random.py, I started wondering whether randrange and randint really behave as "advertised". I am very much inclined to believe so, but the way I read it, randrange is essentially implemented as start + int(random.random()*(stop-start)) (assuming integer values for start and stop), so randrange(1, 10) should return a random number between 1 and 9. randint(start, stop) is calling randrange(start, stop+1), thereby returning a number between 1 and 10. My question is now: If random() were ever to return 1.0, then randint(1,10) would return 11, wouldn't it?

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  • regular expression

    - by Altariste
    Hi, I need to find all invocations of some logging macros in the code. The macro invocation is of the form: DEBUG[1-5] ( "methodName: the logged message", arguments) But the new versions of the macros are prepending the name of the method automatically, so my task is to write a Python script that will remove the duplicate function names specified already by the programmer. I'm using the sub function from the re module. I plan to substitute the part indicated by || signs below : ||DEBUG[1-5] ("methodName: || the logged message", arguments) with simply DEBUG[1-5](" The problem is following: To find the expressions I want to substitute, I use the following regular expression: ((DEBUG | INFO | all other macros names )[1-5]*)\s*\(\"\w+: But it doesn't match the whole expression ( from DEBUG right to the colon ), but only the macro name, that is for example DEBUG5. Is my expression wrong or there is some quirk in the Python regex processing? ( maybe the fact that I use the DEBUG[1-5] as a subgroup has something to do with this? ) Help from anyone more knowledgable than me appreciated :).

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  • JBoss AS 5 "Failed to add Resource"

    - by Mark
    Hello - We are stumped and looking for advice.. Were running: jdk1.6.0_20 , jboss-5.1.0.GA, messaging-2.0.0.BETA4 And trying to add a Topic or Queue but we are getting this error: Failed to add Resource: java.lang.IllegalStateException:Failed to find template for: TopicTemplate any advice?

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  • Python: Unpack arbitary length bits for database storage

    - by sberry2A
    I have a binary data format consisting of 18,000+ packed int64s, ints, shorts, bytes and chars. The data is packed to minimize it's size, so they don't always use byte sized chunks. For example, a number whose min and max value are 31, 32 respectively might be stored with a single bit where the actual value is bitvalue + min, so 0 is 31 and 1 is 32. I am looking for the most efficient way to unpack all of these for subsequent processing and database storage. Right now I am able to read any value by using either struct.unpack, or BitBuffer. I use struct.unpack for any data that starts on a bit where (bit-offset % 8 == 0 and data-length % 8 == 0) and I use BitBuffer for anything else. I know the offset and size of every packed piece of data, so what is going to be the fasted way to completely unpack them? Many thanks.

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  • [PHP] Script looking for string in file breaks

    - by Kel
    Hey guys. I'm running a script that looks for a specific term in a pdf file. Well, actually I'm reading the pdf file as a txt file and look for the term there. The script processes over 20k files. But, unexpectedly, the script breaks after it hits a file that is over 50mb long. It stops. What could the reason be? Here's an excerpt of the script: // Proceed if file exists if(file_exists($sourcePath)){ echo "file exists\n"; if(filesize($sourcePath) > 0){ echo "filesize is greater than 0\n"; $pdfFile = fopen($sourcePath,"rb"); $data = fread($pdfFile, filesize($sourcePath)); fclose($pdfFile); // Search for string if(stripos($data,$searchFor)){ echo "Success. encrypt found\r\n"; fwrite($errorFileHandler,"Success. encrypt found\r\n"); }else{ ..... } ... ... What could be the problem?

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  • saveOrUpdate(Object) method of Hibernate

    - by Vikram
    when i use saveOrUpdate(Object) method of Hibernate. How can I know that row is updated or new row added into table??? Return type of method saveOrUpdate(Object) is void, so am not able to find out the result after calling this method. kindly help me.

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  • Grabbing Just The Top Entry From A LINQ Query

    - by Soo
    I basically have a lot of poorly designed code to do something that, I'm sure, can be done far more elegantly. What I'm trying to do is grab the last date from a database table. var Result = from a in DB.Table orderby a.Date descending select new {Date = a}; foreach(var Row in Result) { LastDate = Row.Date.Date; break; } Basically, there's a foreach loop that is designed to run only once. Crappy code! What's a "best practice" way to accomplish the same thing?

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  • iPhone SDK: problem managing orientation with multiple view controllers.

    - by Tom
    I'm trying to build an iPhone application that has two subviews in the main window. Each view has its own UIViewController subclass associated with it. Also, within each controller's implementation, I've added the following method: -(BOOL)shouldAutorotateToInterfaceOrientation: (UIInterfaceOrientation)interfaceOrientation { return YES; } Thus, I would expect both of the views to respond to changes in orientation. However, this is not the case. Only the first view added to the app's main window responds to orientation. (If I swap the order the views are added, then only the other view responds. In other words, either will work--but only one at a time.) Why is this? Is it not possible to handle the orientation changes of more than one view? Thanks! EDIT: Someone else had this question, so I'm copying my solution here: I was able to address this issue by providing a root view and a root view controller with the method "shouldAutoRotate..." and adding my other views as subviews to the root view. The subviews inherit the auto-rotating behavior, and their associated view controllers shouldn't need to override "shouldAutoRotate..."

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  • Can't compile grails Tomcat plugin

    - by Jeff Beck
    I'm using Netbeans to build a Grails app, while I have used this fine before on this new computer I can not get even the basic project to compile and run. I am getting errors around compiling the Tomcat plugin. If I uninstall the plugin it and use Jetty instead it will compile but the project isn't set up for Jetty and is missing files. Below is the error I'm getting I'm thinking it is some issue with my classpath but I just don't know where to start any help would be much appreciated. java.lang.NoClassDefFoundError: org/apache/catalina/startup/Tomcat$ExistingStandardWrapper

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  • Using same name for Core Data object as a Private Framework Object

    - by bjorn geez
    Hi all, I've got a core data-based app for iPhone and I'm getting the following warning: objc[2472]: Class Property is implemented in both /System/Library/PrivateFrameworks/Notes.framework/Notes and /var/mobile/Applications/B69194FF-448F-48AD-A78D-DDB8935F/AmcCalc.app/AmcCalc. One of the two will be used. Which one is undefined. When I started working on this app back with SDK 3.0 I didn't get this error, so how do I deal with this? Thanks! Bjorn

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  • Raid 5 GPT Partitioning

    - by user39325
    Hi, i have a Dell Poweredge r710 server with five 1 TB disks. All of them are in RAID 5. I was trying to install Centos but it sais "Your boot partition is on disk using GPT Partition...". I read somewhere that centos cant install on 2TB disk, so i made some partiotions smaller, but it's not workin. any idea? p.s. i am going to install Proxmox on that, but Proxmox same doesnt accept 2TB disks...

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  • rsync -c -i flags identical files as different

    - by Scott
    My goal: given a list of files on local server, show any differences to the files with the same absolute path on remote server; e.g. compare local /etc/init.d/apache to same file on remote server. "Difference" for me means different checksum. I don't care about file modification times. I also do not want to sync the files (yet); only show the diffs. I have rsync 3.0.6 on both local and remote servers, which should be able to do what I want. However, it is claiming that local and remote files, even with identical checksums, are still different. Here's the command line: $ rsync --dry-run -avi --checksum --files-from=/home/me/test.txt --rsync-path="cd / && rsync" / me@remote:/ where: "me" = my username; "remote" = remote server hostname current working directory is '/' test.txt contains one line reading "/etc/init.d/apache" OS: Linux 2.6.9 Running cksum on /etc/init.d/apache on both servers yields the same result. The files are the same. However, rsync output is: me@remote's password: building file list ... done .d..t...... etc/ cd+++++++++ etc/init.d/ <f+++++++++ etc/init.d/apache sent 93 bytes received 21 bytes 20.73 bytes/sec total size is 2374 speedup is 20.82 (DRY RUN) The output codes (see http://www.samba.org/ftp/rsync/rsync.html) mean that rsync thinks /etc is identical except for mod time /etc/init.d needs to be changed /etc/init.d/apache will be sent to the remote server I don't understand how, with --checksum option, and the files having identical checksums, that rsync should think they're different. (I've tried with other files having identical mod times, and those files are not flagged as different.) I did run this in /, and made sure (AFAIK) that it's run remotely in /, so even relative pathnames will still be correct. I ran rsync with -avvvi for more debug info, but saw nothing remarkable. I'm wondering: is rsync still looking at file mod times, even with --checksum? am I somehow not setting up the path(s) right? what am I doing wrong?

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  • How to make PDF pages with U3D images print properly?

    - by David Thornley
    I'm creating some PDF files that have three-dimensional images (U3D) in them. When I bring them up in Acrobat, everything is fine until I try to print the file. If I've viewed a page, it prints fine, showing the U3D image as I last saw it. If I haven't viewed a page yet, the printout is blank. (I can demonstrate this right from the Print dialog, by previewing pages.) The only reference I've seen to printing U3D is in the PDF Standard, which says, basically, that this should work. It recommends "PV" or "PO" for the A key in the 3D activation dictionary, and I'm using libharu which uses "PV".

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  • .NET Framework versions

    - by PintSizedCat
    I've had a little search and I was wondering if there is back compatibility for the .NET framework. The real question is, if there's a program that uses .NET Framework 1.1, can I install 3.5 and be done, or do I have to install 1.1 and then if something uses 3.5 I have to install 3.5 as well?

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  • What is the .NET equivalent of PHP var_dump?

    - by George Mauer
    I remember seeing a while ago that there is some method in maybe the Reflection namespace that would recursively run ToString() on all of an object's properties and format it nicely for display. Yes, I know everything I could want will be accessible through the debugger, but I'm wondering if anyone knows that command?

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  • Setting the font of an NSTextView

    - by Koning Baard
    I am subclassing NSTextView to set it's default font: PTNfoEditField.h @interface PTNfoEditField : NSTextView { } @end PTNfoEditField.m @implementation PTNfoEditField -(id)init { if(self = [super init]) { [[self textStorage] setFont:[NSFont fontWithName:@"Courier" size:10]]; } return self; } @end However, this does not work and I don't know how to do it in a different way. Can anyone help me? Thanks.

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