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• correct technical term for this pattern

  - by Oliver A.

  sometimes I use a pattern which is very similar to the singleton pattern: There is one default instance which and a static get method to aces it. But you may create other instances and pass it as optional parameter and if you want to and you can even replace the default instance with a instance from a child class. So it is NO SINGLETON at all but it is used like one singleton in most cases. Anyone got an idea who to call something like this ? Maybe half*** singleton? domiton?

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• Correct way to clear/release an array of arrays

  - by iFloh

  And again my array of arrays .... When I have an array "x" that contains multiple instances of an array "y", how do I clear/release it without risking memory leaks? are the following calls sufficient? (a) clearing the array [x removeAllObjects]; (b) releasing the array [x release]; or do I need to enumerate the array, such as: (c) clearing the array for(int i=0;i<x.count;i++) [[x objectAtIndex:i] release]; [x removeAllObjects]; (d) releasing the array for(int i=0;i<x.count;i++) [[x objectAtIndex:i] release]; [x release]; thanks in advance

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• Updating the collections of entities with NHibernate the correct way

  - by karel_evzen

  A simple question regarding how NHibernate works: I have a parent entity that has a collection of other child entities. Those child entities have a reference to the parent entity they belong to. Now I want to implement an Add method to the parent entity that would add a child to it. Should that Add method only add the child to its new parents collection, or should it also update the parent reference of the child or should it also remove the added entity from its previous parents collection? Do I have to do all these things in that method or will NHibernate do something for me? Thanks.

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• Correct way to take absolute value of INT_MIN

  - by aka.nice

  I want to perform some arithmetic in unsigned, and need to take absolute value of negative int, something like do_some_arithmetic_in_unsigned_mode(int some_signed_value) { unsigned int magnitude; int negative; if(some_signed_value<0) { magnitude = 0 - some_signed_value; negative = 1; } else { magnitude = some_signed_value; negative = 0; } ...snip... } But INT_MIN might be problematic, 0 - INT_MIN is UB if performed in signed arithmetic. What is a standard/robust/safe/efficient way to do this in C?

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• find Image correct width and height

  - by Jeny

  now i get the image's width and height when onload function of img . my problem is, the image original width = 500px but document.getElementId(id).offsetWidth gives only 300px and also for height. Please help me how can i get original width and height of image

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• MySQL - What is the correct primary key method

  - by Hammerstein

  I'm starting to develop an application using MySQL and although I've developed apps before using databases, I've normally gone to the incrementing id method. The other day I was reading a posting somewhere and saw someone being picked apart for this, for not properly "normalising the database". I'm not a big database person, but I wanted to make sure I'm doing this right. Any ideas, help / guidance?

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• What is the correct way to fix this Javascript closure

  - by sujoe

  I have been familiarizing myself with javascript closures and ran across this article http://blog.morrisjohns.com/javascript_closures_for_dummies.html Due to the closure, Example 5 does not work as expected. How would one modify result.push( function() {alert(item + ' ' + list[i])} ); to make the code work? function buildList(list) { var result = []; for (var i = 0; i < list.length; i++) { var item = 'item' + list[i]; result.push( function() {alert(item + ' ' + list[i])} ); } return result; } function testList() { var fnlist = buildList([1,2,3]); // using j only to help prevent confusion - could use i for (var j = 0; j < fnlist.length; j++) { fnlist[j](); } } testList(); Thanks!

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• jQuery on/delegate correct syntax

  - by KryptoniteDove

  As the jQuery API is currently down, is anyone able to assist me with the below? I am ajax loading an unordered list into the web page and need to be able to attach hover and click events to the list items. <ul> <li class="option">Item 1</li> <li class="option">Item 1</li> <li class="option">Item 1</li> </ul> So far I have tried a few variations of the below jQuery code using .on for version 1.7+ $("ul").on("click", "li .option", function(){ alert($(this).text()); }); Can anyone point me in the right direction? I'm aware that .live has been depreciated and that .delegate has been superceeded so really only looking for a solution that will allow me to use .on. Thanks as always!

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• How can i use the Orientation correct for images

  - by user3578109

  I´m learning android/java by myself @the moment and i have a problem with a part of my app i´m learning on. I made the code with help of the www and my problem is that if i open an image from the gallery it´s send to the edit activity but in the activity pictures what are made in portrait mode are displayed always wrong (90° to the right side).... The codes are Matrix private Bitmap rotateBitmapToOrientation(Bitmap b, int orientation){ Matrix matrix = new Matrix(); matrix.postRotate(orientation); Canvas offscreenCanvas = new Canvas(); offscreenCanvas.drawBitmap(b, matrix, null); return b; } and the other one @Override protected void onActivityResult(int requestCode, int resultCode, Intent data) { super.onActivityResult(requestCode, resultCode, data); switch (requestCode) { case PICK_IMAGE_FROM_GALLERY: { if (resultCode == RESULT_OK) { Log.d(TAG, "Got Picture!"); Log.d(TAG,"File type - " + data.getType()); Uri photoUri = data.getData(); if (photoUri != null) { try { String[] filePathColumn = {MediaStore.Images.Media.DATA}; String[] orientationColumn = {MediaStore.Images.Media.ORIENTATION}; int orientation = -1; Cursor cursor = getContentResolver().query(photoUri, filePathColumn, null, null, null); cursor.moveToFirst(); int columnIndex = cursor.getColumnIndex(filePathColumn[0]); String filePath = cursor.getString(columnIndex); cursor.close(); cursor = getContentResolver().query(photoUri, orientationColumn, null, null, null); if(cursor != null && cursor.moveToFirst()){ orientation = cursor.getInt(cursor.getColumnIndex(orientationColumn[0])); } cursor.close(); HashMap<String, Integer> pRes = this.getImageResolutionSetting(); Bitmap shrunkenBitmap = FileUtilsHelper.shrinkBitmap(filePath, pRes.get("width"), pRes.get("height")); shrunkenBitmap = rotateBitmapToOrientation(shrunkenBitmap, orientation); String res = FileUtilsHelper.saveBitmapAsJpeg(shrunkenBitmap, this); Log.d(TAG,"File Path: " + res); shrunkenBitmap.recycle(); Intent editImage = new Intent(this, EditImage.class); editImage.addFlags(Intent.FLAG_ACTIVITY_FORWARD_RESULT); editImage.putExtra("stuff.path", res); startActivity(editImage); }catch(Exception e){ Toast.makeText(this, R.string.cant_save_image,Toast.LENGTH_SHORT).show(); } } } } break; } }} I don´t know what i´m doing wrong... I could really need a teacher on that :) Thx for your help dudes!!

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• javascript popup window with correct data

  - by Christian

  I want this code below open in a popup window. How do I do? html- <td align="right"><a onclick="confirmSubmit();" target="paywin" class="button"><span><?php echo $button_continue; ?></span></a></td> Java - var newwin = null; function confirmSubmit() { $.ajax({ type: 'GET', url: 'index.php?route=payment/dibs/confirm', success: function() { $('#checkout-form').submit(); } }); } //--></script> I tried something like this: var newwin = null; function confirmSubmit() { $.ajax({ type: 'GET', url: 'index.php?route=payment/dibs/confirm', success: window.onload = function() { $('#checkout-form').submit(); } }); window.open('http://www.melacs.com/index.php?route=payment/dibs/confirm') } //--></script>

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• Displaying text in correct column

  - by wrongusername

  After getting a helpful answer here, I have run into yet another problem: displaying two or more strings in the column I want it to be displayed in. For an example of the problem I have, I want this output: Come here! where? not here! but instead get Come here! where? not here! when I use the code cout << left << setw(30) << "Come here!" << " where? " << setw(20) << "not here!" << endl; I made sure (I think) that the width of both columns could contain the two strings, but no matter how large I set the width of the columns to be, the error is still there.

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• Get div and the correct close tag preg

  - by Barkermn01

  hi all, Now preg has always been a tool to me that i like but i cant figure out for the life if me if what i want to do is possible let and how to do it is going over my head What i want is preg_match to be able to return me a div's innerHTML the problem is the div im tring to read has more divs in it and my preg keeps closing on the first tag it find Here is my Actual code $scrape_address = "http://isohunt.com/torrent_details/133831593/98e034bd6382e0f4ecaa9fe2b5eac01614edc3c6?tab=summary"; $ch = curl_init($scrape_address); curl_setopt ($ch, CURLOPT_RETURNTRANSFER, '1'); curl_setopt($ch, CURLOPT_HEADER, 0); curl_setopt($ch, CURLOPT_ENCODING, ""); $data = curl_exec($ch); preg_match('% <div id="torrent_details">(.*)</div> %six', $data, $match); print_r($match); This has been updated for TomcatExodus's help Live at :: http://megatorrentz.com/beta/details.php?hash=98e034bd6382e0f4ecaa9fe2b5eac01614edc3c6

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• .NET & Worflow, SqlTrackingQuery.GetWorkflows() on wire correct - presented object not

  - by UKShots

  With windows workflow when using the tracking service, the SqlTrackingQuery.GetWorkflows() method returns correctly the workflow type and assembly version on the wire from the DB query - but when one comes to query the returned SqlTrackingWorkflowInstance object it's WorkflowType.AssemblyQualifiedName property is returned as the current assembly version of the workflow type (i.e. it looks to matching on FQ type name only and not version). Anyone know how to get to the actual returned data (other than either a custom query or hook)?

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• Java Error When correct code is put together

  - by Eric

  I have a few string problems that I need to put together for a complete homework assignment. They all work correctly by themselves, but when I put them together in the main function, the last one that finds the smallest word in a string gives an error. Anyone know why? public static void main(String[] args){ Scanner sc = new Scanner(System.in); //Length of Word String word1 = sc.next(); System.out.println(word1.length()); //Evens in one string odds in the other String word2 = sc.next(); StringBuilder even = new StringBuilder(); StringBuilder odd = new StringBuilder(); for(int i = 0; i < word2.length(); i++){ if(i % 2 == 0){ even.append(word2.charAt(i)); } else{ odd.append(word2.charAt(i)); } } System.out.println(even + " " + odd); //Diminishing Suffix String word3 = sc.next(); for(int j = 0; j < word3.length(); j++){ System.out.print(word3.substring(j, word3.length()) + " "); } System.out.printf("\n"); //Letter Replacement String word4 = sc.next(); String word5 = sc.next(); String word6 = sc.next(); String word7 = word4.replace(word5, word6); System.out.println(word7); //How many times x appears in xstring String word8 = sc.next(); String word9 = sc.next(); int index = word8.indexOf(word9); int count = 0; while (index != -1) { count++; word8 = word8.substring(index + 1); index = word8.indexOf(word9); } System.out.println(count); System.out.println(); //Lexicographically smallest word String Sentence = sc.nextLine(); String[] myWords = Sentence.split(" "); int shortestLengths, shortestLocation; shortestLengths=(myWords[1]).length(); shortestLocation=1; for (int i = 1; i <myWords.length; i++) { if ((myWords[i]).length() < shortestLengths) { shortestLengths=(myWords[i]).length(); shortestLocation=i; } } System.out.println(myWords[shortestLocation]); } } Talking about the lexicographically smallest one

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• correct method "get next value"

  - by kapec

  Hello!! i need your help! this is my code, it not so good as i wander - it is not working. i have not idea anymore. </code>// need to get next parameter static double getParametr(){ Scanner scanner = new Scanner(System.in); param = scanner.nextDouble(); return param; } .......... ................ if (i==1){ System.out.println("vvedite storoni pryamougolnika: "); Shape parA = new Rectangle(); parA.a = Shape.getParametr(); --- this is ok double aa = parA.a; Shape parB = new Rectangle(); parB.b = Shape.getParametr(); ------ this is no work!!! double bb = parB.b; Rectangle rec = new Rectangle(aa, bb); arrayFigur[i] = rec.area(); } how fix mistake?

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• Correct usage(s) of const_cast<>

  - by ereOn

  Hi, As a common rule, it is very often considered a bad practice to use const_cast<>() in C++ code as it reveals (most of the time) a flaw in the design. While I totally agree with this, I however wonder what are the cases were using const_cast<>() is ok and the only solution. Could you guys please give me some examples you know/you encountered ? Thank you very much.

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• Is this syntactically correct?

  - by Borrito

  I have code in one of the source file as follows: #include <stdio.h> #include <math.h> int a ; int b = 256 ; int c = 16 ; int d = 4 ; int main() { if ((d <= (b) && (d == ( c / sizeof(a)))) { printf("%d",sizeof(a) ); } return 0; } I have removed the casts and have simplified on the data names. The sizeof(a) can be taken as 4. I want to know if the the if syntax is a valid one and if so why doesn't it execute? PS : I haven't sat down on this for long due to time constraints. Pardon me if you find a childish error in the code.

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• correct mysql syntax error

  - by user2981651

  please could someone tell me the problem with this syntax because mysql 5.5.32 keeps tell me about an error CREATE TABLE `clients` ( `ID` tinyint(11) NOT NULL auto_increment, `title` varchar(10) NOT NULL default '', `firstName` varchar(30) NOT NULL default '', `lastName` varchar(30) NOT NULL default '', `address1` varchar(100) NOT NULL default '', `address2` varchar(100) NOT NULL default '', `town` varchar(100) NOT NULL default '', `province` varchar(100) NOT NULL default '', `country` varchar(40) NOT NULL default '', `postCode` varchar(20) NOT NULL default '', `telephone` varchar(20) NOT NULL default '', `email` varchar(100) NOT NULL default '', `cardNo` varchar(16) NOT NULL default '0000-00-00', `expiryDate` date NOT NULL default '0000-00-00', PRIMARY KEY (`ID`) ) TYPE=MyISAM COMMENT='customer table' AUTO_INCREMENT=1 ;

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• jQuery: correct syntax for ':not()'

  - by user304299

  I'm trying to filter a list of elements via ':not()', and jQuery seems to be ignoring my filter. here is the code: myElements.filter(':not(.someclass)'); jquery still selects all of myElements...

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• W: Duplicate sources.list entry : You may want to run apt-get update to correct these problems [closed]

  - by Peter Schriver

  Possible Duplicate: W: Duplicate sources.list entry http://archive.ubuntu.com/ubuntu/ precise-updates/main i386 Packages W: Duplicate sources.list entry http://us.archive.ubuntu.com/ubuntu/ quantal-updates/multiverse i386 Packages (/var/lib/apt/lists/us.archive.ubuntu.com_ubuntu_dists_quantal-updates_multiverse_binary-i386_Packages) W: You may want to run apt-get update to correct these problems I keep getting this message and sudo apt-get update doesn't fix it. I am running 64-bit 12.10. Is there a way to correct this problem?

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• What combination of soft to select? (your advice/opinion) [on hold]

  - by Flyer

  I'm thinking of upgrading my server soft along with OS. As of now, my VPS is running on Debian 6 with nginx (1.2.4) - apache (2.2.16). My VPS specs are 1Gb RAM, 2 cores of Intel(R) Xeon(R) CPU E5520 @ 2.27GHz. Now, here is the question. Which combo should I run? - nginx - apache (2.4.x) - PHP-fpm 5.5.x - nginx - apache (2.4.x) - mod_php 5.5.x - apache (2.4.x) - mod_php 5.5.x - apache (2.4.x) - PHP-fpm 5.5.x - nginx - PHP-fpm 5.5.x - nginx - mod_php 5.5.x I would really like some advice/opinion of people who are more experienced than me with these things. It's nothing big. Around 100-200k pageviews per month. I can also provide some screenshots of munin stats if needed.

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• What are the common pitfalls that would stop Authorised Key SSH access, and how do I find and correct for them?

  - by Ashimema

  EDIT: This question was reworked to make it more useful to the community and less specific to me. Questions seem to come up reasonably often regarding ssh and problems with authorised keys access, but very few seem to have a clear answer anywhere; Server keeps asking for password after I've copied my SSH Public Key to authorized_keys ssh not accepting public key how do I use ssh with key access in 11.10 passwordless ssh not working So, In the communities opinion, what is the tried and tested method for getting to the bottom of such problems?

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• What is the correct way to install ATI Catalyst Video Drivers?

  - by Stephen Myall

  I am planning on doing a fresh install of 12.04 LTS and want to know what is the correct way to install ATI Catalyst Video Drivers in 12.04 LTS? In a previous AU question relating to 11.10 (here) NOT 12.04 the accepted response stated that ia32-libs was a dependency (even for 64bit machines). I studied other Q&A on AU and the reason for asking this specific question is that I wasn't sure about some of the dependencies needed. I was also receiving conflicting advice on other reputable websites which put doubts in my mind on what the correct approach was.

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• What is the correct way to handle debug output in Java?

  - by Federico Zancan

  As my current Java projects grow bigger and bigger, I feel a likewise growing need to insert debug output in several points of my code. To enable or disable this feature appropriately, depending on the opening or closure of the test sessions, I usually put a private static final boolean DEBUG = false at the beginning of the classes my tests are inspecting, and trivially use it this way (for example): public MyClass { private static final boolean DEBUG = false; ... some code ... public void myMethod(String s) { if (DEBUG) { System.out.println(s); } } } and the like. But that doesn't bliss me out, because of course it works but there could be too many classes in which to set DEBUG to true, if you are not staring at just a couple of them. Conversely, I (like - I think - many others) wouldn't love to put the whole application in debug mode, as the amount of text being output could be overwhelming. So, is there a correct way to architecturally handle such situation or the most correct way is to use the DEBUG class member?

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• What is the correct way to install ATI Catalyst Video Drivers in 12.04 LTS?

  - by Stephen Myall

  I am planning on doing a fresh install of 12.04 LTS next weekend (I am currently on Beta) and want to know what is the correct way to install ATI Catalyst Video Drivers in 12.04 LTS? I have been reviewing all the Q&A on AU and the reason for asking this specific question is that I maybe be missing some dependencies from my planned coding. In a previous AU question relating to 11.10 (here) NOT 12.04 the accepted response stated that this was a dependency. sudo apt-get install ia32-libs I was also receiving conflicting advice on other websites which put doubts on what the correct approach was.

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