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• Finding out the version of Dojo

  - by Sandeep

  I'm kinda new to Dojo toolkit. There are certain issues which I would like to get enlightened (I googled but I didn't get any appropriate & satisfying answers) I have a dojo.js(Perhaps the uncompressed dojo.js downloaded) in my already running application (Developed by another software developer). How to find out which version of dojo.js he has downloaded and is being used right now? (Its not commented. I checked) a) While I'm trying to run my application in IE-8 (Opening a pop-up on click of a button), I get error which is pointing me to this line of code if(dojo.isIE&&window.location.protocol==="file:") Note: Its working fine in IE6 but the issue is with IE8 & to be even more specific the JS error is displayed only for the first time when I'm clicking the button. b) Is it true that dojo 1.3 & above is the best & stable release for IE8?

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• Which parallel sorting algorithm has the best average case performance?

  - by Craig P. Motlin

  Sorting takes O(n log n) in the serial case. If we have O(n) processors we would hope for a linear speedup. O(log n) parallel algorithms exist but they have a very high constant. They also aren't applicable on commodity hardware which doesn't have anywhere near O(n) processors. With p processors, reasonable algorithms should take O(n/p log n/p) time. In the serial case, quick sort has the best runtime complexity on average. A parallel quick sort algorithm is easy to implement (see here and here). However it doesn't perform well since the very first step is to partition the whole collection on a single core. I have found information on many parallel sort algorithms but so far I have not seen anything pointing to a clear winner. I'm looking to sort lists of 1 million to 100 million elements in a JVM language running on 8 to 32 cores.

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• How do you write a recursive stored procedure

  - by Grayson Mitchell

  I simply want a stored procedure that calculates a unique id and inserts it. If it fails it just calls itself to regenerate said id. I have been looking for an example, but cant find one, and am not sure how I should get the sp to call itself, and set the appropriate output parameter. I would also appreciate someone pointing out how to test this sp also. ALTER PROCEDURE [dbo].[DataContainer_Insert] @SomeData varchar(max), @DataContainerId int out AS BEGIN -- SET NOCOUNT ON added to prevent extra result sets from -- interfering with SELECT statements. SET NOCOUNT ON; BEGIN TRY SELECT @UserId = MAX(UserId) From DataContainer INSERT INTO DataContainer (UserId, SomeData) VALUES (@UserId, SomeData) SELECT @DataContainerId = scope_identity() END TRY BEGIN CATCH --try again exec DataContainer_Insert @DataContainerId, @SomeData END CATCH END

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• App crashes on back button / Activities & Intents

  - by paradroid666

  I have an android application which starts a new activity Intent startAuthorization = new Intent(AndroidActivity, AuthorizeUser.class); startActivityForResult(startAuthorization,4711); When that new activity is done (a ok button is clicked) I call setResult(RESULT_OK, returnResult); finish(); Which works fine. In case the user doesn't click the okay button but uses the return button of the phone (this arrow pointing around to the left) the application has a force close. I have set a breakpoint on the first line of my method onActivityResult but the debugger never stops there. I have no idea where the issue comes up - how can I find out? Is there a method I have to overwrite to handle this back button?

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• Java Servlet framework that does things like rencoding images to preferred format etc.

  - by mP

  Are there any frameworks/libraries that provide servlets/filters etc that handle reencoding on the fly of images. interpret the accept headers and output the file, reencoding into the new format if necessary by checking the actual format of the original image file. provide a low and high quality version of an image. re encode an image into new dimensions. width and height parameters might query string parameters. I could create versions of the file in all the formats, at upload time but the seems overkill. I would rather lazily create the rencoded file and stick it in a cache if it gets served again etc.

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• What git gotchas have you been caught by?

  - by Bob Aman

  The worst one I've been caught by was with git submodules. I had a submodule for a project on github. The project was unmaintained, and I wanted to submit patches, but couldn't, so I forked. Now the submodule was pointing at the original library, and I needed it to point at the fork instead. So I deleted the old submodule and replaced it with a submodule for the new project in the same commit. Turns out that this broke everyone else's repositories. I'm still not sure what the correct way of handling this situation is, but I ended up deleting the submodule, having everyone pull and update, and then I created the new submodule, and had everyone pull and update again. It took the better portion of a day to figure that out. What have other people done to accidentally screw up git repositories in non-obvious ways, and how did you resolve it?

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• Help Fix a bug - Unexpected T_STRING

  - by thecoshman

  So I have just rebuilt my server, just on local network. Stick my site back on it, try to run the code, and I get a anice T_STRING error. This is all very strange, as I have not changed the code :S <?php $window_ID = -1; if(isset($_POST["window_ID"]) AND $_POST["window_ID"] != null){ $window_ID = trim($_POST["window_ID"]); } ?> This is the start of the file, apter this rather loverly snipit of PHP the rest is just XMl, yet on line 6 appertnlty there is an unexpected T_STRING, which is strange considering all that is on that line is the ?>, then the XML starts up... Any one got any ideas what has gone wrong here? Any chance it ould be magic quotes? I had turned it of before, but I want to now update my code to check for the magic quotes and avoid its stupid actions.

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• How can I create a menu in the start menu for my program?

  - by Joe

  This may be an easy question but I am not even sure of the terminology to search, so I have to ask. I want my program to have a menu when it is hovered over if it is pinned to the start menu. I am attaching a screenshot where windows powershell illustrates this function, and presents a list of tasks. Other programs sometimes use this to list recently opened files, etc. I am sure this is standard enough that there is a tutorial on it somewhere, would someone mind pointing me to it, or explaining how to do this? I hope that it doesn't matter too much what language is used, but I am proficient in Delphi, C++, and C#.

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• Use desktop widget to run corporate web application

  - by jonny

  So the question is simple: is it possible to set windows desktop to corporate application page (anybody remembers that active desktop thing?) and use it instead of browser (sic!). My thoughts: Windows 7: I can create giant full-screen widget that will show my page. Still have no idea if I will be able to navigate inside it though. Windows Vista: ???. I know there is still a side bar gadget that hosts a browser. Windows XP: create static html page with iframe pointing to corporate app home page. Problem: clicking links on page still opens default browser.

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• C++ inheritance question

  - by user233973

  Hi guys, I have a C++ inheritance related question. I have a set of classes like this (I have not given the complete class structure coz I am lazy :) ). I want to access chiComponent class public methods using com pointer. How should I go about it? Note that I am having to change the object which "com" is pointing to in a lot of places. So I do not think I can have another chiComponent *ccom = <some_cast> com; ccom.chiComponentMethod() How should I go about it? class Component{ }; class chiComponent : public Component { public: void chiComponentMethod() { cout << "Hi! Chi component function called!!"; } } class parent { protected: Component *com; }; class child : public parent{ public: child() { com = new chiComponent(); } } Regards Arun

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• Layering of CSS with z-index

  - by Matt Hintzke

  I have a created a 3 circle venn diagram using pure CSS3 and each circle has a :hover event attached to it. I also have an image of an arrow which is pointing to the center of the venn diagram. I want the arrow to visually appear to be on top of the circles, so I put the z-index higher on the arrow than the circles. The problem now, is that the :hover event does not trigger on half of the venn diagram now because the arrow image is on top, which causes the hover to be on top of the arrow rather than the circle that I want it to be over. So is it possible to make an element have a high z-index visually but not programmatically?

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• How to display tab bar in UIViewController

  - by Akrambek

  I have created tabbar based project in MT and I have following flow in my storyboard; Tabbarcontroller -> 1) MainViewController -> CustomerViewController; 2) SettingViewController The problem I am having is that when I use PrepareForSegue function in CustomerViewController and pointing it to MainViewController. Tab Bar UI is missing from MainViewController. I know that if I point to TabBarController it is going to be fine. But I need to pass some data exactly to MainViewController. Is there any way to make it. I am new in iOS and monotouch. Any suggestion appreciate.

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• Android Programmatically created Button Persistence

  - by WtLgi

  So in an app I'm messing around with I programmatically create some buttons. Then I setContentView(); to a different page. Then if I come back to the original page (on which I placed the programmatically created buttons), they no longer exist. I guess this makes sense as I am calling setContentView(R.layout.main); again which is just the original xml file with no data pointing to the buttons. So is there a way to have the buttons persist over such screen transitions? Thanks.

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• Adding behaviour to a set of classes

  - by devoured elysium

  I have defined an Event class: Event and all the following classes inherit from Event: SportEventType1 SportEventType2 SportEventType3 SportEventType4 Right now I will only have SportEvents but I don't know if in the future I'll want some other kind of events that doesn't even have anything to do with Sports. Later, I will want to draw some graphics with info taken from Events, and the drawing logic can be a bit complex. But, for the moment, I think I shouldn't think of how the drawing will be done and I believe that maybe it'd be better if that drawing part was not put as an integral part of the Event/SportEventX class chain. I am looking for solutions for this problem. I know I could just make Event have an instance variable(attribute, for the java crowds) pointing to something as an IDrawInterface, but that would make the Event class "assume" it will be later used for drawing. I would like to make the Event class oblivious to this if possible. Thanks!

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• Best way Implement "refferal links" in Django

  - by Murkin

  Intro I am working on an e-commerce website. And we want to add a feature where a user can refer others via a custom link e.g.: http://mysite.com/a1t2312 or http://mysite.com/?ref=a1t2312 (a1t231 being the referral code). A user following such a link, will navigate a few pages on the site. And if he reached the 'buy' page and purchases something - the original referrer will get a discount. The question is: What is the best method to track the referral code ? Put it in the user's cookies ? Stick it somehow into the session ? Other method ? Thanks

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• Create a javascript chome extention that does not execute in 6 months

  - by user1907657

  I have just started learning programming and I would like to make a script into a chrome extension. Its a basic script and I hope to practice more and more and develop bigger projects and set myself bigger tasks This script has to do the following : reload a page every 20 seconds (say google.com) after 6 months the script must not run (maybe prompt a window saying "its over 6 months") The code should be able to go into a small chrome extension and also the 6 month time period should be absolute not relative to the time the script was started; for example should the browser crash and i have to turn on the extension again it should not restart the 6 month counter. Also if anyone could recommend any good sources for JavaScript to learn (preferably books; nothingIi read online ever seems to stick)

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• Using jQuery, how do I way attach a string array as a http parameter to a http request?

  - by predhme

  I have a spring controller with a request mapping as follows @RequestMapping("/downloadSelected") public void downloadSelected(@RequestParam String[] ids) { // retrieve the file and write it to the http response outputstream } I have an html table of objects which for every row has a checkbox with the id of the object as the value. When they submit, I have a jQuery callback to serialize all ids. I want to stick those ids into an http request parameter called, "ids" so that I can grab them easily. I figured I could do the following var ids = $("#downloadall").serializeArray(); Then I would need to take each of the ids and add them to a request param called ids. But is there a "standard" way to do this? Like using jQuery?

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• Handling the distinction between undefined- and null-parameters in JavaScript

  - by Jakob

  I know very well that null and undefined are distinct in JavaScript. However, I can't seem to decide whether or not use that fact when my own functions are passed one of those as its argument. Or, expressed in a different way, should myFoo(undefined) return the same thing as myFoo(null) or is everything fine if it doesn't? Or, in yet another case, since myBar(1, 2, 3) is the same thing as myBar(1, 2, 3, undefined, undefined), should myBar(1, 2, 3, null, null) return the same thing as myBar(1, 2, 3)? I feel that there's potential for confusion in both cases and that a library should probably follow a convention when handling null/undefined. I'm not really asking for personal opinions (so please express those as comments rather than answers). I'm asking if anyone knows if there is a best practice that one should stick to when it comes to handling this distinction. References to external sources are very welcome!

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• Is it possible to run the Android emulator as root from NetBeans on the Mac

  - by catwallader

  I have installed NetBeans 6.8 on my MacOS (Leopard) system and use the Kenai plugin for this platform to create an Android application. The trouble is that I cannot run the Android emulator from NetBeans logged in to the Mac as a normal user. I can run the emulator from the command line and the Eclipse environment when logged in as root. When I try to run NetBeans as root, it displays a message indicating many of components of the Android plugin cannot be loaded because the root user somehow links to Java 1.5 and the plugin needs Java 1.6. There are 3 solutions to this problem as far as I can see: Make the root user environment link to Java 1.6 and use NetBeans as root. Coerce NetBeans to su to root before running the Emulator. Stick to using Eclipse for Android development. If anyone knows how how to do 1 or 2 I would appreciate getting advice from you. Thanks in advance.

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• Where do I put constants file for Codeigniter (PHP)?

  - by wag2639

  I have a list of constants (I'm using them as an enum), some are define statements, and some are just global variables. Where am I suppose to put them in the MVC framework so I can use them for both my model and my controller that needs to reference it? I'd rather not stick it into config/constants.php since they shouldn't be called except for by this model and the controllers that use it. Edit 1: Clarification To be more specific, I have my message_model model and it has a bunch of constants that I need that are stored in message_model_constants.php. Where should I put message_model_constants.php and is there a way to have it automatically included by the controller that loads message_model when message_model is not (and I don't want it to be) auto-loaded. Edit 2: I really don't want to have the constants auto-loaded except for when I use the model

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• Need recommendation for object serialization library in c++

  - by michael

  Hi, I am looking for recommendation for object serialization/deserialization library in c++? Which one are the most advanced and open-sourced? Can it handle Any class that users defined? Object hierarchy (parent and child classes)? A Tree of objects? Class A has an attribute of Class B which has an attribute of Class C? STL containers? Class A has a vector of Class B? A cyclic of objects? Class A has a pointer pointing to B which has a pointer to A? I find boost serialization library. I am not sure what is its limitation from http://www.boost.org/doc/libs/1_42_0/libs/serialization/doc/tutorial.html

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• FKs on all tables for status colunm

  - by Jonarch

  I have a colunm "Status" in every table in my DB. The purpose of it is to show if the given row is in use or if it has been deactivated. So values can be (0=deactive and 1= active). Two ways I see this: I can have enums or I am thinking if it is better to keep this colunm as a FK which references the main system data dictionary table which has all the codes used on the system. (website) The benefit is every table, every row can then be centralized through this FK. So if i ever want to check all rows which are deactive on my system i can from this table as all th child tables will have like status = ID 233, where 233 = deactive in the data dictionary table. Any benefit or should i stick with the old way of enums?. Also I am thinking if i need one more status for deleted or is that same as deactivated?

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• How to integrate "basic" website into Zend Framework

  - by Joel

  Hi guys, I have a website that has around 10 pages. Only one of those pages uses Zend (to integrate with Google gData). Right now, it's just all coded into that one page, but I'm wanting to learn how to use Zend Framework. How do you handle basic-relatively static php pages within Zend Framework? Do you just stick the whole individual pages into their own respective views and then have to common stuff in the layout, and not worry about a model and controller for those pages? in general, is MVC accepted and appropriate technology for general "web-design" work?

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• Is there an ORM that allows a "plugin" to extend the database?

  - by IP

  So, I've been searching for the answer to this, but I can't find anything I have an Entity Framework Model (MyModel1) - for now, we'll say this contains a "Users" table It's part of a big app, that has a references to an "Addresses" project The addresses project contains an Entity Framework Model (MyModel2), this contains a Users table, and an Addresses table (pointing to the same database. The main app has a control that edits the user, and in that control it has an "addresses" control which actually exists in the "Addresses" project. To make this work, the User control passes the User object down to the addresses control, however, as the User that's been passed belongs to MyModel1 and not MyModel2, another User object has to be loaded up, then it can be used. This isn't ideal as I've had to load up the User twice. Is there a way of say, MyModel2 extending MyModel1, which effectively just adds a relationship to "User". Or is there an ORM that would handle this better? Or even a design pattern that would handle this better?

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• Programatically determining file "size on disk" in advance

  - by porkchop

  I need to know how big a given in-memory buffer will be as an on-disk (usb stick) file before I write it. I know that unless the size falls on the block size boundary, its likely to get rounded up, e.g. a 1 byte file takes up 4096 bytes on-disk. I'm currently doing this using GetDiskFreeSpace() to work out the disk block size, then using this to calculate the on-disk size like this: GetDiskFreeSpace(szDrive, &dwSectorsPerCluster, &dwBytesPerSector, NULL, NULL); dwBlockSize = dwSectorsPerCuster * dwBytesPerSector; if (dwInMemorySize % dwBlockSize != 0) { dwSizeOnDisk = ((dwInMemorySize / dwBlockSize) * dwBlockSize) + dwBlockSize; } else { dwSizeOnDisk = dwInMemorySize; } Which seems to work fine, BUT GetDiskFreeSpace() only works on disks up to 2GB according to MSDN. GetDiskFreeSpaceEx() doesn't return the same information, so my question is, how else can I calculate this information for drives 2GB? Is there an API call I've missed? Can I assume some hard values depending on the overall disk size?

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