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• Removing "duplicate objects"

  - by keruilin

  Let's say I have an array of objects from the same class, with two attributes of concern here: name and created_at. How do I find objects with the same name (considered dups) in the array, and then delete the duplicate record in the database. The object with the most-recent created_at date, however, is the one that must be deleted.

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• Why should I call self=[super init]

  - by Michael

  Let's say I create my class and its init method. Why should I call and return value of superclass init assigned to self? Which cases it covers? I would appreciate examples why would I need it for Cocoa superclass and non-Cocoa.

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• MYSQL - sort a list, how to always have one result at the end?

  - by GSto

  I have a table with just as ID and a value. Let's say this list have 4 items, such as Apple,Banana, Zuchinni, and Other. I want to sort the list alphabetically, but always have 'Other' be the last option. Is there a way to accomplish this using a query?

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• What is the difference between printf() and puts() in C?

  - by alex

  First up, I should let you know that I am learning C, so my apologies if this question seems stupid to a more advanced developer. I know you can print with printf() and puts(). I can also see that printf() allows you to embed variables inside and do some stuff like formatting. Is puts() merely a primitive version of printf(). Should it be used for every possible printf() without string interpolation? Thanks

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• Getting file extension in C language

  - by iSight

  Say there is a file called 12345.jpg. In C, how can I get the file extension so that I can compare with some file extension? If there are any inbuilt functions, kindly please let me know.

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• How to make an unit test always pass?

  - by brain_damage

  Let's assume someone has to write a solution to a problem and I have to test his solution with some tests. Is it possible (maybe with reflections or something) his program to pass all my tests, but to have nothing in common with the real solution to the problem?

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• Date Time conversion

  - by Zerotoinfinite

  Hi All, I am getting datetime as 1/2/2010 11:29:30 which I am displaying in a gridview. and I want to convert it to "Feb 1, 2010 at 11:29". Please let me know how to convert it like this. Thanks in advance. Note: I am using asp.net with C#.

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• What's the best way to stop multiple instances of a Windows app being launched?

  - by John

  Many Windows apps (like Skype or MSN for instance) don't let you start multiple instances, rather trying to run it a 2nd time just leaves the existing version running. Is this typically done in some simple way - the start-menu shortcut is a 'wrapper' app around the main app - or is there some registry magic you can do to delegate the problem to Windows itself? Specifically dealing with Win32 here (unmanaged C++) but happy to hear more general solutions as long as they are workable on Windows XP or alter.

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• dictionary/map/key-value pairs data structure in C

  - by morgancodes

  How does one construct and access a set of key-value pairs in C? To use a silly simple example, let's say I want to create a table which translates between an integer and its square root. If I were writing javascript, I could just do this: var squareRoots = { 4: 2, 9: 3, 16: 4, 25: 5 } and then access them like: var squareRootOf25 = squareRoots[5] What's the prettiest way to do this in C? What if I want to use one type of enum as the key and another type of enum as the value?

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• How to implement Registration module in android applications ?

  - by serenity

  Hello Guys, I want to implement registration module in my android application. Can anyone please let me know the procedure. I mean, how can I use HttpRequestHandlerRegistry, SQLite connectivity etc Thanks in advance. Regards, serenity.

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• How to connect my APP to SQL Server?

  - by salhzmzm

  Hi I have 1 PC (MS Server 2003 + MS SQL Server 2008) and 2 PCs (MS SP2 + my APP) how I can let my APP connects to sql server 2008 on other PC My APP will connect to server to store data in SQL Server 2008 and read/delete/edit (basic operations) what is the best way to do that? NOTE: my APP is written in C# (.NET Platform)

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• What does it mean "regular file" according to S_ISREG C/C++ ?

  - by debugger

  Hello all, Let's consider the following 3 code lines: struct stat buffer; status = lstat(file.c_str(), &buffer); bool Flag = S_ISREG(buffer.st_mode) When S_ISREG() returns true it tells you that the file is a regular file What does regular means exactly ? Thanks

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• Output of a C question..

  - by RBA

  int main() { int a=10,b=20; char x=1,y=0; if(a,b,x,y) { printf("EXAM"); } } Hi, Please let me know why output of this question is "Printed Nothing".. Thankss.

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• NUnit, is it possible to continue executing test after Assert fails?

  - by m.bagattini

  In a test that contains some asserts, for example: Assert.AreEqual(1,1); Assert.AreEqual(2,1); Assert.AreEqual(2,2); is it possible to let the test keep running after it fails at some point? In the example, first condition is true, second fails and the test stops. I'd like to evaluate also the following condition.

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• Is The Transaction Log Truncated When Doing a Backup In Full Recovery Mode?

  - by byte_slave

  Is the database transaction log automatically truncated after we create a backup and the DB is in full recovery mode? Or do we need to make 2 different backups, let's say 1 in full recovery mode and a different one for the log file.

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• Organize address cache

  - by Orsol

  Hi, I need to organize cache in mySql database for address - coordinates. What is the best practice to store address? Do i need to compress address string or use it as is? edit: Ok, let's I reassert my question. How to store long (up to 512) string in database if I need to search by exactly this string in future.

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• Is there any LIBrary available in PHP to convert PDF file to HTML?

  - by OM The Eternity

  Hi all I Have a system. I which I need to edit the PDF in every specific evcent, for that I googled a lot and reached to conclusion that it can be achieved by first converting PDF to HTML, editting the HTML and then again converting the same HTML to PDF file. Is there any Library available in PHP to convert PDF file to HTML? And if anyone available with other way to achieve my task, please let me know, NOTE: PLEASE DO NOT SUGGEST ZEND FRAMEWORK USE.

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• Rails nested has_many association, how to get, say, last 5 of all children?

  - by Randuin

  Let's say that Post has_many :comments and that Comment has_many :ratings How can I grab the last 5 comment ratings for each Post? I've been thinking of just looping through comment for each post but that wouldn't solve the Last 5 part.

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• Is it possible to use CSS round-corners and still pass validation?

  - by John

  IIRC the situation is that IE simply doesn't support rounded corners, but some other browsers need browser-specific extensions... either FF or web-kit, I don't recall. I'm happy to use it in some cases and let IE fall-back to square corners, but does using browser-extension CSS break validation... I quite like having my site validate AND work on IE6.

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• What is the first ORM framework?

  - by user1014315

  I'm doing a presentation about history of software engineering and stuck at this question due to the lack of available information. According to my quick research, TopLink is the first ORM framework ever created (in 1990s, certainly before 1996). If anyone else has a different opinion, please let me know. (Please also provide a link to the reference sources) Ref: http://en.wikipedia.org/wiki/List_of_object-relational_mapping_software http://en.wikipedia.org/wiki/TopLink

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• What's the best way to display a blown-up image using minimal JQuery?

  - by TkTech

  The Goal: On mouseover (or :hover), enlarge the preview image by about 400% and display it in the center of the page Remove the preview when the mouse leaves The Problem: Solutions like FancyBox are too bloated in FancyBox's case it ignores width and height for image elements, which makes it useless Most of these "lightboxes" steal focus when they're called Really, I'm just looking for a simple, efficient solution. Oops - StackOverflow won't let me post images yet, mockup - http://img685.imageshack.us/img685/7649/idae.png

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• How do I uninstall the .NET framework?

  - by spelunk

  I'm having a problem running a VS 2005 app on some machines and not others. I looked up the error message on google and found a post by someone who had the same error and fixed it by uninstalling and reinstalling the .NET framework. When I try to do that, Windows won't let me because it is in use. Am I expected to uninstall everything that is using the framework first, then uninstall the framework, then reinstall, etc.? Does anyone know of an easier way?

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• Number of the different elements in an array.

  - by AB

  Is it possible to compute the number of the different elements in an array in linear time and constant space? Let us say it's an array of long integers, and you can not allocate an array of length sizeof(long). P.S. Not homework, just curious. I've got a book that sort of implies that it is possible.

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• Best way to add/change 1 GET value while keeping others?

  - by John Isaacks

  How can I make a link that justs adds or changes 1 GET var while maintaining all others? I have a page that is created using different GET vars. So it will be like mypage.php?color=red&size=7&brand=some%20brand So I want to have a link that sets it to page=2 or size=8. Whats the easiest way to have a link do that without reseting all the other vars? I hope that makes sense, let me know if I need to further explain anything

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• Accessing Ember component scope from block form?

  - by user3009816

  I want to let a user pass a custom text field, App.CustomTextField, in a Ember component using block form. However, that App.CustomTextField needs access to the component to manipulate its properties. How can I pass the component to the textfield using block form? I would like to pass the component as a property to App.CustomTextField, but how do I access the component's scope? {{#blog-post}} {{view App.CustomTextField component=?}} {{/blog-post}}

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