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• Test Application Guide for Winforms

  - by Jonathan

  I'm a c# developer in a medium/small company. I use to do quick test of the apps that my workmates made and they use to test my applications. We test each form based in our experience. (yes, I know this is not a very formal method) Now a new guy without experience are going to join our team. We think now is the momento to make a little list of things that all we should test in each form. Divided by categories. For example usability: Test that the taborder of each control are properly setted, or Valitacion: Test that the max lenght of each textbox match with the max lenght of a field in the DB...etc We don't one to Reinvent the Wheels, so I want to know if such kind of document already exists. Thanks

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• iPad Orientation Paradigm

  - by JustinXXVII

  I'm not a super awesome designer so this new paradigm has me a little cranky. The iPad is not supposed to have a standard orientation, and should/shall display screen contents at whichever orientation the user decides. This has me sort of stumped. I can keep my UI designed the way I want it in landscape mode, but switching to portrait, I just can't determine the best way to present app content. I know it's all speculation at this point, but what are the chances we can override the autoRotateToOrientation to only include the orientation of our choice? Apple ignored the HIG on a lot of issues for iPhone, including splash screens, saving state, etc. I know we can't really argue with Apple, but doesn't it sound slightly ridiculous to reject an app because it won't rotate to portrait? I've come a long way porting some code to iPad and it works great in landscape mode. I guess only time will tell. What do you all think?

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• CSS size transition to stay inside parent div

  - by IlyaD

  I want to have an image frame that when I hove over it the image inside will zoom in a little (I am using size transition), but the frame will stay the same size. What happens now that even if the frame has a fixed width and height it is stilled zoomed with the image HTML: <div class="img-wrapper"> <img class="thumbnail" src="http://placekitten.com/400/200"> </div> and CSS .img-wrapper { width: 400px; } .thumbnail { width: 400px; } .thumbnail { -webkit-transition: all 0.2s ease-out; -moz-transition: all 0.2s ease-out; transition: all 0.2s ease-out; } .thumbnail:hover { width: 500px; -webkit-transition: all 0.2s ease-out; -moz-transition: all 0.2s ease-out; transition: all 0.2s ease-out; } http://codepen.io/pen/KCJny

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• Perl system call

  - by claferri

  I'm a beginner in Perl and I have some trouble using the "system" call. Here is a little piece of code where I try to execute 2 shell commands : # First command is : # dot -Tpng $dottmpfile > $pngfile # Second command is : # rm $dottmpfile if (!($pngfile eq "")) { my @args = ("dot", "-Tpng", $dottmpfile, " > ", $pngfile); system (join (' ' , @args )) or die "system @args failed : $!"; unlink $dottmpfile; } EDIT : Here is my code now, and I still get an error : system dot -Tpng toto.dot > toto.png failed : Inappropriate ioctl for device at /home/claferri/bin/fractal.pl line 79. I've used this to produce this piece of code.

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• Using malloc/free in Objective-C object

  - by Itamar Katz

  I have a class AudioManager with a member of type AudioBufferList *. (This is a struct declared in the CoreAudio framework). Since AudioBufferList is not a NSObject, I cannot retain it, so I have to alloc/free it (correct me if I'm wrong). My question is, where is the 'right' place to free it? Currently I am doing it in the dealloc method of AudioManager. If I understand correctly, this method is invoked automatically once the release message is sent to the instance of AudioManager --- is that true? Is there any other recommended practice regarding using alloc/free on non-objects members of Objective-C objects? Edit: From Apples documentation: Subclasses must implement their own versions of dealloc to allow the release of any additional memory consumed by the object—such as dynamically allocated storage for data or object instance variables owned by the deallocated object. After performing the class-specific deallocation, the subclass method should incorporate superclass versions of dealloc through a message to super: Which makes things a little bit clearer - but more insights are appreciated.

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• How to set Android Google Maps API v2 map to show whole world map?

  - by Joao

  I am developing an android application that uses a google map in the background. When I start the application, I want to display a map of the hole word. According to the android google maps API v2: https://developers.google.com/maps/documentation/android/views the way to set a specific zoom value is "CameraUpdateFactory.zoomTo(float)" and the same api https://developers.google.com/maps/documentation/android/reference/com/google/android/gms/maps/CameraUpdateFactory#zoomTo(float) tells that the minimum argument to this function is 2. but when I call the function: mMap.moveCamera(CameraUpdateFactory.zoomTo(2)); The viewport of the world map is just a little bigger than Australia... How can I display the entire world map at once? Thanks in advance, João

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• newbie: how to upload images from a form with PHP and mySQL

  - by paracaudex

  I'm creating a web app (locally, so security doesn't matter) in PHP where the user uploads a set of information and a small .jpeg, which is then inserted into a mySQL table. I can do this no problem with all the text data, but I'm not sure how to cause the image to upload alongside it. I assume I will have to use the blob data type and input type="file", but I fooled around with that a little bit and the solution doesn't seem to be an intuitive extension of how input type="text" works. Do I need to do a lot more PHP scripting to get this to work? Is it possible to upload an image with a form, or is there a necessary intermediate step?

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• Is there an easy to script 2d game world?

  - by Sandro

  For a school project we're developing a game that's a little like Conway's game of life, with different organisms taking up slots in the world and then eating each other. I would like to see this take place in a 2d world. Like being able to take starcraft and have zergling and marines play roles. The problem with starcraft is that the whole algorithm would have to be written inside of the game editor, and starcraft isn't free or open source. So is there another engine that is starcraft/warcraft/AOE-ish that can be scripted from outside of the game and is freely available? (I'm asking a lot here I know)

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• Web Services vs Persistent Sockets

  - by dsquires

  I plan on doing a little benchmarking around this question, myself. But I thought it would be good to get some initial feedback from "the community". Has anyone out there done any analysis regarding the pros and cons of these two technologies? My thoughts: Opening and closing TCP/IP connections for web service calls is relatively expensive compared to persistent connections. Dealing with intermittent connection errors and state, etc... would be easier with a web service based framework. You don't see World of Warcraft using web services. One question that I can't seem to find much of answer for anywhere (even on here)... are the limits on the # of persistent connections a single network card can support, etc?

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• Should Java IOException have been an unchecked RuntimeException?

  - by Derek Mahar

  Do you agree that the designers of Java class java.io.IOException should have made it an unchecked run-time exception derived from java.lang.RuntimeException instead of a checked exception derived only from java.lang.Exception? I think that class IOException should have been an unchecked exception because there is little that an application can do to resolve problems like file system errors. However, in When You Can't Throw An Exception, Elliotte Rusty Harold claims that most I/O errors are transient and so you can retry an I/O operation several times before giving up: For instance, an IOComparator might not take an I/O error lying down, but — because many I/O problems are transient — you can retry a few times, as shown in Listing 7: Is this generally the case? Can a Java application correct I/O errors or wait for the system to recover? If so, then it is reasonable for IOException to be checked, but if it is not the case, then IOException should be unchecked so that business logic can delegate handling this exception to a separate system error handler.

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• MonoDevelop/GTK OS X Usability Issues?

  - by Tylo

  Does anyone else have infuriating usability issues while trying to work with MonoDevelop in OS X Snow Leopard? The ones that interrupt my flow the most are associated with button clicks not responding until I move the window around a little bit. Afterwards, I can get maybe one or two button presses in before I have to repeat moving the window around. I've heard this is a GTK problem that has nothing to do with MonoDevelop in the past and would like to know if anyone else experiences this or has found a way to fix it?

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• how big should your controllers be in asp.net-mvc

  - by ooo

  i see the new feature of areas in asp.net-mvc 2. it got me thinking. why would i need this? i did some reading on the use cases and it came down to a specific point to me around how big and how broad scope should my controllers should be? should i try to have many little controllers? one big controller? how do people determine the sweet spot for number of controllers? i think mine are maybe too large (which had me questioning areas in the first place as maybe my controller name should really be an area and have a number of smaller controllers)

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• Handy F# snippets

  - by Benjol

  There are already two questions about F#/functional snippets. However what I'm looking for here are useful snippets, little 'helper' functions that are reusable. Or obscure but nifty patterns that you can never quite remember. Something like: open System.IO let rec visitor dir filter= seq { yield! Directory.GetFiles(dir, filter) for subdir in Directory.GetDirectories(dir) do yield! visitor subdir filter} I'd like to make this a kind of handy reference page. As such there will be no right answer, but hopefully lots of good ones.

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• How does NHibernate handle cascade="all-delete-orphan"?

  - by Johannes Rudolph

  I've been digging around the NHibernate sources a little, trying to understand how NHibernate implements removing child elements from a collection. I think I've already found the answer, but I'd ideally like this to be confirmed by someone familiar with the matter. So far I've found AbstractPersistentCollection (base class for all collection proxies) has a static helper method called GetOrphans to find orphans by comparing the current collection with a snapshot. The existence of this method suggests NHibernate tries to find all oprhaned elements and then deletes them by key. Is this correct, in terms of the generated SQL?

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• Does Extreme Programming Need Diagramming Tools?

  - by Ygam

  I have been experimenting with some concepts from XP, like the following: Pair Programming Test First Programming Incremental Deliveries Ruthless Refactoring So far so good until I had a major stump: How do I design my test cases when there aren't any code yet? From what basis do I have to design them? From simple assumptions? From the initial requirements? Or is this where UML diagrams and the "analysis phase" fits in? Just had to ask because in some XP books I've read, there was little to no discussion of any diagramming tool (there was one which suggested I come up with pseudocodes and some sort of a flowchart...but it did not help me in writing my tests)

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• Interfacing my application with existing authentication systems

  - by Karan Bhangui

  I'm writing a web based application that will have its own authorization/authentication mechanism (traditional cookie/session based user/pass). However, depending on the organization that licenses the software, I want them to be able to plug in their own existing internal authentication system as a way to replace mine. Ideally, they'd have to run as little code as possible on their end; I'm trying to make this a mostly hosted service. I'm aware of the existence of OAuth, but don't entirely understand how I would go about implementing the system at a higher level. Any tips would be appreciated.

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• How dangerous can javascript be?

  - by CrazyJugglerDrummer

  I have recently started using noscript (in addition to ABP). It took a little while to get used to it and can occasionally require some clicking when visiting a new site to investigate why the site's not working and where I need to allow javascript from. Is the extra security worth it? Some of the controversy is discussed here. I suppose it boils down to a matter of whether javascript is a genuine threat to your computer or not. Any thoughts on this?

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• Tuning OS X Virtual Memory

  - by dcolish

  I've noticed some really odd results form vm_stat on OSX 10.6. According to this, its barely hitting the cache. Searches of pretty much everywhere I could think of turn up little to explain why the rate is so low. I asked a few friends and they're seeing the same thing. What gives and how can I make it better? Mach Virtual Memory Statistics: (page size of 4096 bytes) Pages free: 78609. Pages active: 553411. Pages inactive: 191116. Pages speculative: 6198. Pages wired down: 153998. "Translation faults": 116031508. Pages copy-on-write: 2274338. Pages zero filled: 33360804. Pages reactivated: 264378. Pageins: 1197683. Pageouts: 43756. Object cache: 20 hits of 1550639 lookups (0% hit rate)

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• Avoid Internet Explorer Warning when embedding Youtube on HTTPS site?

  - by pellepim

  On a HTTPS site embedding youtube clips works great in all browser, except Internet Explorer where I get this famous little warning message: "Do you want to view only the webpage content that was delivered securely? This page contains content that will not be delivered using a secure HTTPS ... etc" I've tried to solve this in several ways. The most promising one was to use the ProxyPass functionality in Apache to map to YouTube. Like this: ProxyPass: /youtube/ http://www.youtube.com ProxyPassReverse: /youtube/ http://www.youtube.com This gets rid of the annoying warning. However, the youtube SWF fails to start streaming The SWF i manage to load into the browser simply states : "An error occurred, please try again later". Potential solutions are perhaps: Download youtube FLV:s and serve them out of own domain (gah) Use custom FLV-player and stream only FLV:s from youtube over a https proxy?

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• Issue with child of custom Decorator class in WPF

  - by galacticgrug

  I need a custom border that renders a little differently than a normal border. I made a class that inherited from Decorator as follows class BetterBorder : Decorator { protected override Size ArrangeOverride(Size arrangeSize) { return arrangeSize; } protected override void OnRender(DrawingContext dc) { //these values are calculated elsewhere dc.DrawGeometry(backgroundBrush, borderPen, pathGeometry); } } //Properties and helper methods below this All of this works fine until I try to add a child to the control, the control can be added but is not visible and seems to be moved off BetterBorders visible client area. If I inherit from Border everything works fine, what am I missing?

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• Reading file resource in Unix and MacOS

  - by Sanjeev

  Hi, I am writing my first wxWidgets application which aims to be cross-platform. The program uses dll file for plugins and in Windows, reads dll resource part for information regarding plugin name, author name etc. I have never used Unix or MacOS (little Linux though) and am wondering whether compiling binary for these other OSes will require changes to the code written for Windows. For instance, is there a DLL equivalent in Unix and MacOS? Are there any provisions of compiling resource strings and files into a such files? Thanks, Sanjeev

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• Continous integration with .net and svn

  - by stiank81

  We're currently not applying the automated building and testing of continous integration in our project. We haven't bothered this far as we're only 2 developers working on it, but even with a team of 2 I still think it would be valuable to use continous integration and get a confirmation that our builds don't break or tests start failing. We're using .Net with C# and WPF. We have created Python-scripts for building the application - using MSbuild - and for running all tests. Our source is in SVN. What would be the best approach to apply continous integration with this setup? What tool should we get? It should be one which doesn't require alot of setup. Simple procedures to get started and little maintanance is a must.

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• Embedding Ruby, calling a function from C

  - by ThePower

  Hi, I'm writing an app that calls ruby code from c. I am having a little difficulty and wondered if anyone could point me in the rite direction. I currently have in my C. #include ruby.h main() { ruby_init(); rb_require("myRubyFile"); rb_funcall(rb_module_new(), rb_intern("RubyFunction"), 0, NULL); } My ruby file is in the same directory as my c file and is called myRubyFile.rb and contains a definition of the function RubyFunction(). This is a cut down of what I actually want to do, just making it more readable for others. I just require some feedback as to whether this is the correct method to call ruby code from my c file. Regards

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• can you help me with 8068 project for Delphi .net please

  - by Lex Dean

  To find an Assembly programmer is very hard to help me I'm a established Delphi programmer that has an old copy of Delphi that is not .net And I have a *.dll that I'm converting into Delphi code for .net I'm on a big learning curve hear as i know little of .net yet. I've just got a computer with .net today!!!!!! I've run the *.dll through a dissembler and started putting jump links in as writing in Delphi assembly you do not do any addressing, just reference links. The file has fixed string structures (i think C++) ASCII & ANSI strings 1/ I do not know how to identify how the code references these structures 2/ and I do not know were the functions begin and what shape they look like The code is free for any one to look at their is not many functions in it. but I have to email it as stack over flow will not allow me to display it. Can you tech me or can you refer me to a friend you may know please to tech me lexdeanair at hotmail.com Best regards, Lex Dean from New Zealand I do not wish to pester any one

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• Why does appending "" to a String save memory?

  - by hsmit

  I used a variable with a lot of data in it, say String data. I wanted to use a small part of this string in the following way: this.smallpart = data.substring(12,18); After some hours of debugging (with a memory visualizer) I found out that the objects field smallpart remembered all the data from data, although it only contained the substring. When I changed the code into: this.smallpart = data.substring(12,18)+""; ..the problem was solved! Now my application uses very little memory now! How is that possible? Can anyone explain this? I think this.smallpart kept referencing towards data, but why? UPDATE: How can I clear the big String then? Will data = new String(data.substring(0,100)) do the thing?

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