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Articles indexed Saturday April 3 2010

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  • Store data in DB as is, or escaped?

    - by Yegor
    Whats a better way to store textual data, such as comments, user profile fields that require them to type something in, etc? Store the escaped data right away (using htmlspecialchars in php for example), or put it thru the same function before its echoed out?

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  • iPhone: should initWithNibName:bundle: method be deleted from UIViewController class if not used?

    - by Scott Pendleton
    I notice that this method is provided in UIViewController .m files, but is commented out: - (id)initWithNibName:(NSString *)nibNameOrNil bundle:(NSBundle *)nibBundleOrNil I had been leaving that method commented out, or even deleting it. But then I looked at this line inside the method: if (self = [super initWithNibName:nibNameOrNil bundle:nibBundleOrNil]) I assume that if it were truly important for self to be set equal to super, then Apple would not have the method be commented out by default. On the other hand, if I do need to do some customization in that method, why do I need to set self = super? What's the best practice, and why?

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  • Android multiple email attachment using Intent question

    - by yyyy1234
    Hi, I've been working on Android program to send email with attachment (image file , audio file , etc) using Intent with (ACTION_SEND) . THe program is working when email has a single attachment. I used Intent.putExtra( android.content.Intent.EXTRA_STREAM, uri) to attach the designated image file to the mail and it is wokring fine , the mail can be delivered through Gmail . However, when I tried to have multiple images attached to the same mail by calling Intent.putExtra( android.content.Intent.EXTRA_STREAM, uri) multiple times, it failed to work. None of the attachment show up in the email . I searched the SDK documentation and Android programming user group about email attachment but cannot find any related info. However, I've discovered that there's another intent constnat ACTION_SEND_MULTIPLE (available since API level 4 ) which might meet my requirement. Based on SDK documentation, it simply states that it deliver multiple data to someone else , it works like ACTION_SEND , excpet the data is multiple. But I still could not figure out the correct usage for this command. I tried to delcare intent with ACTION_SEND_MULTIPLE , then call putExtra(EXTRA_STREAM, uri) multiple times to attach multiple images , but I got the same errnoenous result just like before, none of the attachment show up in the email. Has anyone tried with ACTION_SEND_MULTIPLE and got it working with multiple email attachment ? Thanks very much for your help. Regards, yyyy1234

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  • jQuery UI: Dialog button styling

    - by Peter Bridger
    Is there an easy way to apply CSS/icons to the modal buttons on a jQuery UI modal dialog box? If I include the HTML to display an icon with the button text, it shows the HTML as text rather than rendering the code. I'm guessing I could write some jQuery to find the button and overwrite the HTML with what I want, but I'm hoping there's an easier more direct way.

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  • C++ code visualization

    - by bobobobo
    A sort of follow up/related question to this. I'm trying to get a grip on a large code base that has hundreds and hundreds of classes and a large inheritance hierarchy. I want to be able to see the "main veins" of the inheritance hierarchy at a glance - not all the "peripheral" classes that only do some very specific / specialized thing. Visual Studio's "View Class Diagram" makes something that looks like a train and its sprawled horizontally across the screen and isn't very organized. You can't grok it easily. I've just tried doxygen and graphviz but the results are .. somewhat similar to Visual Studio. I'm getting sweet looking call graphs but again too much detail for what I'm trying to get. I need a quick way to generate the inheritance hierarchy, in some kind of collapsible view.

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  • Custom URL Scheme from settings.bundle

    - by S-T-R-E-G-A
    Is it possible to set a custom URL scheme to launch my app from a link but make this a user defined setting? My app relies on a user defined server url and I would like to be able to set a URL scheme to launch my app using the users custom URL from lets say an email link. I noticed the info.plist has these references ${EXECUTABLE_NAME} can I define my own custom reference maybe?

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  • Consulting a Prolog Source Code from within a VS2008 Solution File

    - by Joshua Green
    I have a Prolog file (Hanoi.pl) containing the code for solving the Hanoi Towers puzzle: hanoi( N ):- move( N, left, middle, right ). move( 0, _, _, _ ):- !. move( N, A, B, C ):- M is N-1, move( M, A, C, B ), inform( A, B ), move( M, C, B, A ). inform( X, Y ):- write( 'move a disk from ' ), write( X ), write( ' to ' ), writeln( Y ). I also have a C++ file written in VS2008 IDE: #include <iostream> #include <string> #include <stdio.h> #include <stdlib.h> using namespace std; #include "SWI-cpp.h" #include "SWI-Prolog.h" predicate_t phanoi; term_t t0; int main(int argc, char** argv) { long n = 5; int rval; if ( !PL_initialise(1, argv) ) PL_halt(1); PL_put_integer( t0, n ); phanoi = PL_predicate( "hanoi", 1, NULL ); rval = PL_call_predicate( NULL, PL_Q_NORMAL, phanoi, t0 ); system( "PAUSE" ); } How can I consult my Prolog source code (Hanoi.pl) from within my C++ code? Not from the Command Prompt - from the code, something like include or consult or compile? It is located in the same folder as my cpp file. Thanks,

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  • iphone - keeping the last frame of a frame animation visible

    - by Mike
    I have this code UIImageView *sequence = [[UIImageView alloc] initWithImage:[UIImage imageNamed:@"balao_surge0.png"]]; NSMutableArray *array = [[NSMutableArray alloc] init] ; for (int i=0; i<30; i++) { UIImage *oneImage = [UIImage imageNamed:[NSString stringWithFormat:@"balao_surge%d.png",i]]; [array addObject:oneImage]; } sequence.animationImages = array; sequence.animationDuration = 2.0; sequence.animationRepeatCount = 1; [umaVista addSubview:sequence]; [sequence release]; sequence.startAnimating; The animation plays fine, but after the last frame is shown, it vanishes. I would like to make it stay visible, that is, make the animation stop on the last frame. Is there any way to do that? thanks for any help.

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  • MSSQL 2000 installation error: Setup failed to configure the server. Refer to the server error logs.

    - by kaneuniversal
    I'm trying to install MSSQL 2000 on a virtual Windows 2003 instance. However, every time I run the install program, it fails to start the service. This is the error log: 21:46:50 C:\Program Files\Microsoft SQL Server\80\Tools\Binn\cnfgsvr.exe -F "C:\WINDOWS\sqlstp.log" -I MSSQLSERVER -V 1 -M 0 -Q "SQL_Latin1_General_CP1_CI_AS" -H 131408 -U sa -P ############################################################################### Starting Service ... SQL_Latin1_General_CP1_CI_AS -m -Q -T4022 -T3659 Connecting to Server ... driver={sql server};server=xxxxxxxxxx;UID=sa;PWD=;database=master [Microsoft][ODBC SQL Server Driver]Timeout expired driver={sql server};server=xxxxxxxxxx;UID=sa;PWD=;database=master [Microsoft][ODBC SQL Server Driver]Timeout expired driver={sql server};server=xxxxxxxxxx;UID=sa;PWD=;database=master [Microsoft][ODBC SQL Server Driver]Timeout expired SQL Server configuration failed. ############################################################################### 21:49:34 Process Exit Code: (-1) 22:19:04 Setup failed to configure the server. Refer to the server error logs and C:\WINDOWS\sqlstp.log for more information. 22:19:04 Action CleanUpInstall: 22:19:04 C:\DOCUME~1\ADMINI~1\LOCALS~1\Temp\1\SqlSetup\Bin\scm.exe -Silent 1 -Action 4 -Service SQLSERVERAGENT 22:19:05 Process Exit Code: (1060) The specified service does not exist as an installed service. 22:19:05 C:\DOCUME~1\ADMINI~1\LOCALS~1\Temp\1\SqlSetup\Bin\scm.exe -Silent 1 -Action 4 -Service MSSQLSERVER 22:19:05 Process Exit Code: (0) 22:19:05 StatsGenerate returned: 2 22:19:05 StatsGenerate (0x0,0x1,0xf00000,0x200,1033,303,0x0,0x1,0,0,0 22:19:05 StatsGenerate -1,Administrator) 22:19:05 Installation Failed. Has anyone had this problem? Any ideas about how to fix it? Thanks very much, Michael

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  • Is frozenset adequate for caching of symmetric input data in a python dict?

    - by Debilski
    The title more or less says it all: I have a function which takes symmetric input in two arguments, e.g. something like def f(a1, a2): return heavy_stuff(abs(a1 - a2)) Now, I want to introduce some caching method. Would it be correct / pythonic / reasonably efficient to do something like this: cache = {} def g(a1, a2): return cache.setdefault(frozenset((tuple(a1), tuple(a2))), f(a1, a2)) Or would there be some better way?

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  • Top techniques to avoid 'data scraping' from a website database

    - by Addsy
    I am setting up a site using PHP and MySQL that is essentially just a web front-end to an existing database. Understandably my client is very keen to prevent anyone from being able to make a copy of the data in the database yet at the same time wants everything publicly available and even a "view all" link to display every record in the db. Whilst I have put everything in place to prevent attacks such as SQL injection attacks, there is nothing to prevent anyone from viewing all the records as html and running some sort of script to parse this data back into another database. Even if I was to remove the "view all" link, someone could still, in theory, use an automated process to go through each record one by one and compile these into a new database, essentially pinching all the information. Does anyone have any good tactics for preventing or even just dettering this that they could share. Thanks

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  • Ruby Enterprise Edition crashes in gc_sweep

    - by Greg
    My Rails application crashes intermittently with the following message: /usr/local/lib/ruby/gems/1.8/gems/activesupport-2.3.5/lib/active_support/multibyte/utils.rb:52: [BUG] gc_sweep(): unknown data type 0x0(0xbdc2ca0) ruby 1.8.7 (2009-12-24 patchlevel 248) [i686-linux], MBARI 0x8770, Ruby Enterprise Edition 2010.01 I am running the app on Nginx / Passenger. Ruby 1.8.7 Enterprise Edition 2010.10, Rails 2.3.5, Ubuntu 9.10 32bit. Does anybody have an idea how to fix this?

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  • iphone app hangs in AppDelegate (?)

    - by d_CFO
    No nib/IB, so I've inserted "myAppDelegate" in main and deleted the reference to main.xib in info.plist. Debug continues nicely through all five tab controllers; they seem to have gotten properly loaded into the nav controller. In fact, control passes out of the last "}" in applicationDidFinishLaunching. But there was no (visible) response back at [window addSubview:[tabBarController view]]; and [window makeKeyAndVisible]; statements, much less to the loadView within the first tab (program execution never gets there). The last line is, UIApplication _performInitializationWithURL:sourceBundleID:]. I missed a step? I executed a step improperly?

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  • How to time Java program execution speed

    - by George Mic
    Sorry if this sounds like a dumb question but how do you time the execution of a java program? I'm not sure what class I should use to do this. I'm kinda looking for something like: //Some timer starts here for (int i = 0; i < length; i++) { // Do something } //End timer here System.out.println("Total execution time: " + totalExecutionTime); Thanks

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  • UITableView reloadData to sort the table cells

    - by harekam_taj
    Hey Guys, I have a uitableview and I am populating the tableview with data from the internet. I added some sort features to the table but when I do the sorting and get new results from the web server and reload the table. The table doesn't refresh, the old results stay on the table and if I press on a particular cell I see the new result just for that cell. Can someone please help me? Thanks

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  • How to get the Blur event to fire for the document on the iPhone?

    - by Ian Storm Taylor
    Does anyone know how to get the blur event to fire on the document for the iPhone? I'm trying to get it to fire either when a user changes windows in Safari, or when they open their bookmarks or when they decide to add the page to their homescreen. But none of these are firing it. Here's my code: $(document).blur( function () { document.title = "Ian Taylor"; }); I've tried "document", "window", "'body'". Nothing seems to work.

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  • Regular Expression: Allow letters, numbers, and spaces (with at least one letter or number)

    - by makeee
    I'm currently using this regex ^[A-Z0-9 _]*$ to accept letters, numbers, spaces and underscores. I need to modify it to require at least one number or letter somewhere in the string. Any help would be appreciated! This would be for validating usernames for my website. I'd actually like to support as many characters as I can, but just want to ensure that I prevent code injection and that characters will display fine for all users. So I'm definately open to regex validation suggestions that would support a wider set of characters.

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  • Knowing the selections made on a 'multichooser' box in a mechanical turk hit (using Command Line Too

    - by gveda
    Hi All, I am new to Amazon Mechanical Turk, and wanted to create a hit with a qualification task. I am using the command line tools interface. One of the questions in my qualification task involves users selecting a number of options. I use a 'multichooser' selection type. Now I want to grade the responses based on the selections, where each selection has a different score. So for example, s1 has a score of 5, s2 of 10, s3 of 6, and so on. If the user selects s1 and s3, he/she gets a score of 11. Unfortunately, doing something like the following does not work: <AnswerOption> <SelectionIdentifier>s1</SelectionIdentifier> <AnswerScore>5</AnswerScore> </AnswerOption> <AnswerOption> <SelectionIdentifier>s2</SelectionIdentifier> <AnswerScore>10</AnswerScore> </AnswerOption> <AnswerOption> <SelectionIdentifier>s3</SelectionIdentifier> <AnswerScore>6</AnswerScore> </AnswerOption> If I do this, when I select multiple things, I get a score of 0. If I select only one option, say s1, then I get the appropriate score. Can you please help me on how to go about this? I could ask the same question 5 times with the same options, but then users might choose the same answer multiple times - something I wish to avoid. Thanks! Gaurav

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  • Loading JNI lib on Mac OS X?

    - by Clinton
    Background So I am attempting to load a jnilib (specifically JOGL) into Java on Mac OS X at runtime. I have been following along the relevant Stack Overflow questions: Maven and the JOGL Library Loading DLL in Java - Eclipse - JNI How to make a jar file that include all jar files The end goal for me is to package platform specific JOGL files into a JAR and unzip them into a temp directory and load them at start-up. I worked my problem back to simply attempting to load JOGL using hard-coded paths: File f = new File("/var/folders/+n/+nfb8NHsHiSpEh6AHMCyvE+++TI/-Tmp-/libjogl.jnilib"); System.load(f.toString()); f = new File ("/var/folders/+n/+nfb8NHsHiSpEh6AHMCyvE+++TI/-Tmp-/libjogl_awt.jnilib"); System.load(f.toString()); I get the following exception when attempting to use the JOGL API: Exception in thread "main" java.lang.UnsatisfiedLinkError: no jogl in java.library.path But when I specify java.library.path by adding the following JVM option: -Djava.library.path="/var/folders/+n/+nfb8NHsHiSpEh6AHMCyvE+++TI/-Tmp-/" Everything works fine. Question Is it possible use System.load (or some other variant) on Mac OS X as a replacement for -Djava.library.path that is invoked at runtime?

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  • entity framework vNext wish list

    - by Fred Yang
    I have been intensively studying and use ef4 in my project. I do feel the improvement that it has over version 1. But I found that I have something I cannot get around easily. Here is a list I want it to be better in ef vNext. the model designer should allow multiple view of the same model, so that I don't need cram all my entity into a single view. respect user's manual edit of edmx. Currently, the some database view object simply can not be imported to the model because the designer "smartly" think that the view does not have a primary key, so that I have to manually edit the edmx to correct designer's behavior. But in the next "update from database" task, designer will revert my customization. For now, I simply fallback to manually edit the edmx file at all, or I have to use compare tool to keep the new update, and rollback and put the new update into my old edmx file manually. Designer should be improved to allow default behavior and user's manual control. I want control not to let the designer refresh the change of imported object. support user defined table function. linq is about Composability, stored proc dos not support composability. I wish I could use user defined table function which support this. What are you wishes for EF vNext?

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  • Java Interface Usage Guidelines -- Are getters and setters in an interface bad?

    - by user68759
    What do people think of the best guidelines to use in an interface? What should and shouldn't go into an interface? I've heard people say that, as a general rule, an interface must only define behavior and not state. Does this mean that an interface shouldn't contain getters and setters? My opinion: Maybe not so for setters, but sometimes I think that getters are valid to be placed in an interface. This is merely to enforce the implementation classes to implement those getters and so to indicate that the clients are able to call those getters to check on something, for example.

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