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  • database transaction rollback processing in PHP

    - by user198729
    try { $con->beginTransaction(); $this->doSave($con); $con->commit(); } catch (Exception $e) { $con->rollBack(); throw $e; } The code above is quite standard an approach to deal with transactions, but my question is:what if $con->rollBack() also fails? It may cause db lock,right?If so,what's the perfect way to go?

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  • Question related to photogallery

    - by user217572
    I'm saving my image to photo gallary , but I want to fetch this image on click of UIButton and want to show it on the UIImageview or UIview.My code for saving image on photo gallery is as under:- I don't want to use UIImagePickerViewController any where in my programme UIImage *image = [UIImage imageNamed:@"flower.png"]; UIImageWriteToSavedPhotosAlbum(image, self, nil, nil);

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  • How to facebook getuser() after login with javascript SDK

    - by user1848205
    So I have to ask for extended permission by clicking the enter button, but after the login is necessary to refresh the page in order to display the app. Here's my code: <?php require 'facebook.php'; $facebook = new Facebook(array( 'appId' => '< THE APPID >', 'secret' => '< THE SECRET >', 'cookie' => true, )); $user = $facebook->getUser(); if ($user) { try { $user_profile = $facebook->api('/me'); } catch (FacebookApiException $e) { error_log($e); $user = null; } } ?> <body> <div id="fb-root"></div> <script> window.fbAsyncInit = function() { FB.init({ appId : '< THE APPID >', status : true, cookie : true, xfbml : true }); // Additional initialization code such as adding Event Listeners goes here $('#btn-enter').click(function(){ login(); }); }; (function(d){ var js, id = 'facebook-jssdk', ref = d.getElementsByTagName('script')[0]; if (d.getElementById(id)) {return;} js = d.createElement('script'); js.id = id; js.async = true; js.src = "//connect.facebook.net/en_US/all.js"; ref.parentNode.insertBefore(js, ref); }(document)); function login() { FB.login(function(response) { if (response.authResponse) { // connected } else { // cancelled } //}); }, {scope: 'read_friendlists,friends_photos,publish_stream'}); } </script> <?php if ($user): ?> <!--Here is my APP--> <?php else: ?> <a id="btn-enter">Enter</a> <?php endif ?> Is there a better way to do this ? What works for me is: function login() { FB.login(function(response) { if (response.authResponse) { top.location.href='https://the_app_url'; } else { } //}); }, {scope: 'read_friendlists,friends_photos,publish_stream'}); } But this causes the entire page to refresh and is not 'elegant' per se...

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  • How to setup network for Android Honeycomb in VirtualBox?

    - by IHawk
    I have been trying to setup Android Honeycomb (3.2) with VirtualBox according to this tutorial: http://androidspin.com/2011/01/24/howto-install-android-x86-2-2-in-virtualbox/ but using this iso instead: http://code.google.com/p/android-x86/downloads/detail?name=android-x86-3.2-RC1-tegav2.iso&can=2&q When I type netcfg if gives me: 127.0.0.1/8, so apparently it is not connecting in the network. I tried setting the network to NAT and Bridge, but no results.. Is there anything I am missing?

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  • How to get the second element using jquery

    - by Jesse
    Using this jquery code I am trying to change the display from none to block for the second ul under Sale which is under Belts (It has a belts-1 href). The below code should be accessing the second element but its not. What am I doing wrong? $currentCategory = "Belts"; $(".sideCatMenu a:contains('" + currentCategory + "') ul").next(ul).eq(2).css('display', 'block'); I am searching this list <li class="active"><a href="/sale/" class="parentSide">Sale</a><ul style="display: block;" class="subcat"> <li><a href="/accessories-3/">Accessories</a><ul style="display: none;"> <li><a href="/bags-1/">Bags</a></li> <li><a href="/wristbands/">Wristbands</a></li> <li><a href="/dog-collars/">Dog Collars</a></li> <li><a href="/wallets/">Wallets</a></li> </ul> </li> <li><a href="/ten-dollar-buckles/">Ten Dollar Buckles</a></li> <li><a href="/belts-1/">Belts</a><ul style="display: none;"> <li><a href="/28-belts/">28" Belts</a></li> <li><a href="/30-belts/">30" Belts</a></li> <li><a href="/32-belts/">32" Belts</a></li> <li><a href="/34-belts/">34" Belts</a></li> <li><a href="/36-belts/">36" Belts</a></li> <li><a href="/38-belts/">38" Belts</a></li> <li><a href="/40-belts/">40" Belts</a></li> <li><a href="/42-belts/">42" Belts</a></li> <li><a href="/44-belts/">44" Belts</a></li> <li><a href="/46-belts/">46" Belts</a></li> <li><a href="/48-and-larger-belts/">48" and Larger Belts</a></li> </ul> </li> </ul> </li>

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  • Evil merges in git - where do they come from?

    - by Benjol
    I've read this question and the answers, but what isn't clear to me is WHO creates the "changes that do not appear in any parent". Is it the git merge algorithm screwing up? Or is it because the user has to manually adjust the conflicts to get the thing to build, introducing new code which wasn't in either parent?

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  • How to avoid Perm Gem space exception in JBoss server ?

    - by Purushotham
    I deploy my J2EE application after making some changes to the code. At maximum of 4 times I can deploy the EAR file into the server without restarting the JBoss server. After the 4th deployment if I deploy one more time it throws PermGem space exception. I don't what this exception is. I restart the server then everything works fine. Any idea why the Jboss server throws PermGem space exception after 4 deployments ?And Why it occurs ?

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  • RMagick Rounded Corners

    - by mikeycgto
    Need a simple a way of rounding off an Image. I need the corners to be transparent. This link shows how to do it via command line: http://www.imagemagick.org/Usage/thumbnails/#rounded What I need is the corresponding RMagick\Ruby code... Thanks!

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  • Are there compelling reasons not to use Groovy?

    - by Leonard H Martin
    I'm developing a LoB application in Java after a long absence from the platform (having spent the last 8 years or so entrenched in Fortran, C, a smidgin of C++ and latterly .Net). Java, the language, is not much changed from how I remember it. I like it's strengths and I can work around its weaknesses - the platform has grown and deciding upon the myriad of different frameworks which appear to do much the same thing as one another is a different story; but that can wait for another day - all-in-all I'm comfortable with Java. However, over the last couple of weeks I've become enamoured with Groovy, and purely from a selfish point of view: but not just because it makes development against the JVM a more succinct and entertaining (and, well, "groovy") proposition than Java (the language). What strikes me most about Groovy is its inherent maintainability. We all (I hope!) strive to write well documented, easy to understand code. However, sometimes the languages we use themselves defeat us. An example: in 2001 I wrote a library in C to translate EDIFACT EDI messages into ANSI X12 messages. This is not a particularly complicated process, if slightly involved, and I thought at the time I had documented the code properly - and I probably had - but some six years later when I revisited the project (and after becoming acclimatised to C#) I found myself lost in so much C boilerplate (mallocs, pointers, etc. etc.) that it took three days of thoughtful analysis before I finally understood what I'd been doing six years previously. This evening I've written about 2000 lines of Java (it is the day of rest, after all!). I've documented as best as I know how, but, but, of those 2000 lines of Java a significant proportion is Java boiler plate. This is where I see Groovy and other dynamic languages winning through - maintainability and later comprehension. Groovy lets you concentrate on your intent without getting bogged down on the platform specific implementation; it's almost, but not quite, self documenting. I see this as being a huge boon to me when I revisit my current project (which I'll port to Groovy asap) in several years time and to my successors who will inherit it and carry on the good work. So, are there any reasons not to use Groovy?

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  • how to change Dictionary's value when enumerate it?

    - by younevertell
    how to change Dictionary's value when enumerate it? the following code doesn't work, because we can not change dictionary's value when enumerating it. Is there any way to get around it? Or NO WAY? Thanks foreach (KeyValuePair<string, int> kvp in mydictionary) { if (otherdictionary.ContainsKey(kvp.Key)) { mydictionary[kvp.Key] = otherdictionary[kvp.Key]; } else { otherdictionary[kvp.Key] = mydictionary[kvp.Key]; } }

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  • When and where should I add a view to a UITableView's footer?

    - by camelCase
    I am populating a UITableViewController's UITableView through code only. At the bottom of the table I wish to position a button that scrolls into view as the user scrolls to the bottom of the table. When in the UITableViewController life cycle should I populate the table footer with a button? viewDidLoad? p.s. I wish to avoid using section footers in the UITableView.

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  • How to write a Python 2.6+ script that does gracefully fail with older pyhton?

    - by Sorin Sbarnea
    I'm using the new print from Python 3.x and I observed that the following code does not compile due to the end=' '. from __future__ import print_function import sys if sys.hexversion < 0x02060000: raise Exception("py too old") ... print("x",end=" ") # fails to compile with py24 How can I continue using the new syntax but make the script fails nicely? Is it mandatory to call another script and use only safe syntax in this one?

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  • How to figure out that mp3player is delayed when seek bar is working with ??

    - by elecboy97
    While playing mp3 by mediaplyer and showing the progress with seek bar, the problem is that mp3playing sound is delayed when mediaplyer and seekbar working at the same time. I used thread, handler, timer for solving that problem on seekbar.setProgress(mediaplayer.getCurrentPosition()). what do I do?? sdk can take more playbuffer for mp3player..?? or I should focus on optimizing code than before..??

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  • Conditional Update stored proc is firing a trigger always

    - by schar
    I have a stored procedure that says update table1 set value1 = 1 where value1 = 0 and date < getdate() I have a trigger that goes like CREATE TRIGGER NAME ON TABLENAME FOR UPDATE ... if UPDATE(value1) BEGIN --Some code to figure out that this trigger has been called -- the value is always null END Any idea why this trigger is called even when the stored procedure does not update any values?

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  • How to get the trending tags using php and mysql?

    - by Tom
    Hello I have a table : tags(tagname,entryid,stamp) and i want to make a section for the most trending tags today, the tagname column has no unique value, because many entries has the same tag, so the php code that i want should display the most attached tags today. Note: the "stamp" column is the date of adding the tag in UNIX time stamp format. Thanks

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  • How to detect working internet connection in C#?

    - by detariael
    I have a C# code that basically uploads a file via FTP protocol (using FtpWebRequest). I'd like, however, to first determine whether there is a working internet connection before trying to upload the file (since, if there isn't there is no point in trying, the software should just sleep for a time and check again). Is there an easy way to do it or should I just try to upload the file and in case it failed just try again, assuming the network connection was down?

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  • How to change the title bar of a window in Mac OS X

    - by macdever
    I am trying to change the titlebar of a window in Mac OS X. To be specific I am trying to this with firefox. And I want to draw/put a bitmap on the title bar and also min, max, and close buttons. Also I found this file which might be helpful: http://people.mozilla.com/~chofmann/l10n/tree/mozilla/widget/src/cocoa/nsCocoaWindow.mm I can see that they have the code to do custom shading or color change. Thanks

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  • question for jsp coding

    - by sheetal
    I am reteriving the set of values inside a table from database in a jsp page then it is in the form of link. Now I want to click that value and move to another jsp page. How to code the program so that it can recognise that value and it can move to the next desired page. But I unable to do that. please help me....

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  • making multiple c# file for one asp.net page

    - by Nikhil K
    For my project(in asp.net) i wrote near 1000 lines of c# code for one asp.net page.It includes so many functions.The problem is,it is going complicated while i am writing more codes on one page.How can i make multiple c# files for one asp.net page?? I tried by adding new class in VS2008.But calling a function from one file to other is making error(item is not present in current file).How can i do that??

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  • Dynamic populate ComboBox (Flex)

    - by Vinzcent
    Hey, I want to populate a ComboBox after a clicked a button. This is my code: var dpNames:ArrayCollection = new ArrayCollection(); for each(var ca:Categorie in arrCategories) { dpNames.addItem ({label: ca.name, data: ca.value}); } cbWijzigCategorie.dataProvider = dpNames; But when he executes the last line, I alwas get the following error: TypeError: Error #1009: Cannot access a property or method of a null object reference. I have no idea why. Thanks a lot, Vincent

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  • To save to log out time

    - by user311078
    I want to save log out time when user close the Browser without clicking log out button using asp.net with C# and SQL server 2005. kindly let me know the way as well as code.. Thanks in advance

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