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• HTTP compression - can I configure a client to compress the data sent to a server?

  - by lgomide

  Hello, I'm using IIS 7 as web server for my application. If I enable dynamic content compression in the server, will this also enable clients to send compressed data to the server, if they can? I mean, my application uses SOAP webservices, and clients usually send large chunks of data to the server. The clients are written in C#/.NET. Is there any kind of configuration I can do in a web reference / serice reference in order to tell them to compress the content before they send it to IIS? And do I have to do any kind of configuration in IIS in order for this to work? Thanks in advance

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• Web services Authentication Jungle

  - by redben

  I have been doing some research lately about best approaches to authenticating web services calls (REST SOAP or whatever). But none of the Approaches convinced me... But i still can't a make a choise... Some talk about SSL and http basic authentication -login/password- which just seems weird for a machine (i mean having to assign a login/password to a machine, or is it not ?). Some others say API keys (seems like these scheme is more used for tracking and not realy for securing). Some say tokens (like session IDs) but shouldn't we stay stateless (especially if in REST style) ? In my use case, when a remote app is calling one of our web services, i have to authenticate the calling application obviously, and the call must - if applicable - tell me which user it impersonates so i can deal with authorization later. Any thoughts ?

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• Wordpress slideshow plugin with scrollbar, autoplay and lightbox

  - by user350276

  I have been asked to build a portfolio website for a photographer. The main page contains a slideshow of the photographer's best work, I have used an autoplaying NextGEN SmoothGallery with Lytebox. After some customization of the plugin, this works. However, the client has requested a category selection above the main slideshow and a scrollbar below the image. They also want part of the previous and next images to be visible, not just the image in focus. The image here illustrates what I mean. I have searched and searched, but cannot find a plugin that would do this. Can anybody help, please?

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• Problem with averaging corrupted images to eliminate the noise in MATLAB

  - by Mertie Pertie

  I want to average some .jpg images which are corrupted by zero-mean Gaussian additive noise. After searching around, I figured out to add the image matrices and divide the sum by the number of matrices. However, the resultant image is totally black. Normally when the number of image increases then the resultant image gets better. But when I use more images it gets darker. I am using 800x600 black and white .jpg images. Here is the script I used: image1 = imread ('PIC1.jpg'); image2 = imread ('PIC2.jpg'); image3 = imread ('PIC3.jpg'); image4 = imread ('PIC4.jpg'); sum = image1 + image2 + image3 + image4; av = sum / 4; imshow(av);

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• The String source is unknown while using the parse methode!

  - by kawtousse

  Hi everyone, to parse a string to a date sql valid: SimpleDateFormat df = new SimpleDateFormat("yyyy-MM-dd"); java.util.Date date = null; try { date = df.parse(dateimput); } catch (ParseException e2) { // TODO Auto-generated catch block e2.printStackTrace(); } with dateimput is what i get from my form like that: String dateimput=request.getParameter("datepicker"); but when running see the error: java.text.ParseException: Format.parseObject(String) failed at java.text.Format.parseObject(Unknown Source) at ServletEdition.doPost(ServletEdition.java:70) so it mean that dateimput is not known + I note that it is correctly dislayed when: System.out.println("datepicker:" +dateimput); Thanks.

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• Can I embed video on external sites while still using tokens to protect the content?

  - by JKS

  On our own website, it's easy to protect against direct links to our video content by grabbing a token through AJAX and verifying the token through PHP before the file download is started. However I'm also researching how I could provide an embed feature, like YouTube or vimeo etc., without compromising this security feature. The problem is that the embed code I want to provide should look something like <object>...<embed>...</embed></object> -- but I don't know how to grab and append the token to the filename. I mean, I guess I could attach a script that did some gnarly JNOP business, but that's too dirty. I'm using JW Player for the actual video container. Huge thanks to anyone who can help...

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• Does C++11 offer a better way to concatenate strings on the fly?

  - by Lohoris

  I've seen this answer, and I wonder (I hope) if C++11 has come up with a native better method to concatenate, and possibly format, strings. With "better" I mean actually really one-line, like in pretty much all higher level languages (bonus points if it supports something like python's "formatted string"%(tuple) syntax but I guess that's really hoping for too much). The ideal result should be something like: my_func("bla bla bla" << int(my_int) << "bla bla bla"); The only barely acceptable methods listed in that answer are the fastformat ones, but I wonder if C++11 managed to do better.

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• jQuery - Slideshow with different sized images and text

  - by NicoJuicy

  I need some sort of slideshow, with text (something like moving boxes would be nice). I have tried several, but i'm always having problems with different sized images (the images can be for eg. 500px x 300px, but the next one can be 500px, 300px), this gives some problems with the pictures ... I hope you understand what i mean. It's very irritating to find a good jquery plugin that can deal with this problem... :( Can anyone find me a good working one or an alternative to jQuery?

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• If you were developing shareware softwares for windows, would you target the .Net Framework or use n

  - by bohoo

  For the sake of the question, by 'shareware' I mean a software which is relatively small in size (up to few dozens of mb) and available for download and evaluation through a web site. I'm asking this question, because I don't understand something regarding the current state of windows commercial desktop development. It seems to me that: There is no reliable statistic regarding the extent of windows systems with .Net Framework installed. It makes no sense to force the end user to install the 20-60mb .Net for an application which may be smaller. Applications conforms to the term 'shareware' above have a big share on the win os market. Much of them don't need the capabilities of low level languages like c++, and therefore ideally they should be developed with a RAD enviroment. So, One would suppose there will be a blossom of RAD enviroments for native win code. But I know about only one - Delphi, and Delphi is so unpopular. How is that?

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• How to parse JSON to receive a Date object in JavaScript?

  - by Piotr Owsiak

  I have a following piece of JSON: \/Date(1293034567877)\/ which is a result of this .NET code: var obj = DateTime.Now; var serializer = new System.Web.Script.Serialization.JavaScriptSerializer(); serializer.Serialize(obj).Dump(); Now the problem I am facing is how to create a Date object from this in JavaScript. All I could find was incredible regex solution (many containing bugs). It is hard to believe there is no elegant solution as this is all in JavaScrip, I mean JavaScript code trying to read JSON (JavaScript Object Notation) which is supposed to be a JavaScript code and at this moment it turns out it's not cause JavaScript cannot do a good job here. I've also seen some eval solutions which I could not make to work (besides being pointed out as security threat). Is there really no way to do it in an elegant way? Similar question with no real answer: How to parse ASP.NET JSON Date format with GWT

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• Reverse Bredth First Search in C#

  - by Ngu Soon Hui

  Anyone has a ready implementation of the Reverse Bredth First Search algorithm in C#? By Reverse Bredth First Search, I mean instead of searching a tree starting from a common node, I want to search the tree from the bottom and gradually converged to a common node. Let's see the below figure, this is the output of a Bredth First Search: In my reverse bredth first search, 9,10,11 and 12 will be the first few nodes found ( the order of them are not important as they are all first order). 5, 6, 7 and 8 are the second few nodes found, and so on. 1 would be the last node found. Any ideas or pointers?

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• List of fundamental data structures - what am I missing?

  - by jboxer

  I've been studying my fundamental data structures a bunch recently, trying to make sure I've got them down cold. By "fundamental", I mean the real basic ones. Fancy ones like Red-Black Trees and Bloom Filters are clearly worth knowing, but they're usually either enhancements of fundamental ones (Red-Black Trees are binary search trees with special properties to keep them balanced) or they're only useful in very specific situations (Bloom Filters). So far, I'm "fluent" in the following data structures: Arrays Linked Lists Stacks/Queues Binary Search Trees Heaps/Priority Queues Hash Tables However, I feel like I'm missing something. Are there any fundamental ones that I'm forgetting about? EDIT: Added these after posting the question Strings (suggested by catchmeifyoutry) Sets (suggested by Peter) Graphs (suggested by Nick D and aJ) B-Trees (Suggested by tloach) I'm a little on-the-fence about whether these are too fancy or not, but I think they're different enough from the fundamental structures (and important enough) to be worth studying as fundamental.

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• Do invariant assertions fit into C# programming?

  - by P.Brian.Mackey

  In the book coders at work, the author asks "How do you use invariants in your code". Please explain what this question means. I saw class invariants on wiki, but the example is in Java and I am not skilled enough in Java to relate this example to C#. .NET 4.0 introduces invariance, covariance, and contravariance and is well explained here. Invariance is so broad. The authors usage of the word seems unit test related. For those that read the book, what does the author mean? Are we talking about making an assumption and simply testing the validity after the unit test?

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• How RPG characters are made

  - by user365314

  If RPG with the ability to change armors and clothes are made, how is it done? I mean the 3d side mostly If i make normal character, that has flat clothes, it would be easy, just change textures, but question is about armors, which have totally different models. So are only armor models recreated or character model with armor? How is it imported into game engine, only armor or character model with new armor? If person changes armor in game, will game swap the hole model or only the armor part? if only the armor part, then how the movement animations are done, are armor models animated on characters in 3d programs or what... :D

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• NSString sizeWithAttributes: Inaccuracy

  - by dave-gennel

  I want to know the width of an NSString displayed on the screen in pixels. So I can fit an NSTextField its bounds to be exactly the length of the string itself. So I used IB's "Label" NSTextField and for those who don't know what I mean, I got a label with title "Label", font "Lucida Grande 13px", not selectable, not editable, regular size, no background and according to IB its width is 38px wide. If I want to get its width programatically I use [@"Label" sizeWithAttributes: [NSDictionary dictionaryWithObject: [NSFont fontWithName: @"Lucida Grande" size: 13] forKey: NSFontAttributeName]].width Which will give me 33.293457 . So that's about 5 px of the real width..

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• Reverse Breadth First traversal in C#

  - by Ngu Soon Hui

  Anyone has a ready implementation of the Reverse Breadth First traversal algorithm in C#? By Reverse Breadth First traversal , I mean instead of searching a tree starting from a common node, I want to search the tree from the bottom and gradually converged to a common node. Let's see the below figure, this is the output of a Breadth First traversal : In my reverse breadth first traversal , 9,10,11 and 12 will be the first few nodes found ( the order of them are not important as they are all first order). 5, 6, 7 and 8 are the second few nodes found, and so on. 1 would be the last node found. Any ideas or pointers? Edit: Change "Breadth First Search" to "Breadth First traversal" to clarify the question

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• VWD Express won't let me add one table!

  - by user530809

  Sorry if this question is too trivial but I really haven't found any related questions and I am shaking too much to think logically. I spent like few hours waiting for SQL Server to finally install (you know, it's Microsoft) and now when I want to add new table to database it says "this feature is not supported by Microsoft Visual Web Developer Express". How could this happen? I mean, what's the point of even letting me use this if I can't even add one table to database, and I won't even know about it until I actually need to do it? Are they really serious or is it just some mistake? Is there any way to get around this problem? I need to create just one simple project with one small table in database but it won't let me, but I can't believe they could actually have nerves to make express edition without such a trivial function, so maybe I just made something wrong and there's actually some way to add this table? Sorry for being so whiny but I'm just fed up with this environment.

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• How does dereferencing of a function pointer happen?

  - by eSKay

  Why and how does dereferencing a function pointer just "do nothing"? This is what I am talking about: #include<stdio.h> void hello() { printf("hello"); } int main(void) { (*****hello)(); } From a comment over here: function pointers dereference just fine, but the resulting function designator will be immediately converted back to a function pointer And from an answer here: Dereferencing (in way you think) a function's pointer means: accessing a CODE memory as it would be a DATA memory. Function pointer isn't suppose to be dereferenced in that way. Instead, it is called. I would use a name "dereference" side by side with "call". It's OK. Anyway: C is designed in such a way that both function name identifier as well as variable holding function's pointer mean the same: address to CODE memory. And it allows to jump to that memory by using call () syntax either on an identifier or variable. How exactly does dereferencing of a function pointer work?

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• Designing a frontend/backend architecture

  - by wrp

  What are some good information sources on designing programs with a client/server architecture? This is for development of a desktop application, not a Web service. The only books I have found on client/server apps deal with the case of a thin client connecting to a remote database. Two good examples of what I mean are Mathematica and SuperCollider. I'm looking for platform- and language-agnostic discussion of the issues in developing a frontend/backend system. Especially useful topics would be allocation of responsibilities and options for message passing.

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• Trying to right click on code in VS2008 causes lockup.

  - by Adam Haile

  Working on a Win32 DLL using Visual Studio 2008 SP1 and, since yesterday, whenever I try to right click on code, to go to a variable definition for example, VS completely locks up and I have to manually kill the process. To make it even weirder, whenever this happens the devenv.exe process uses exactly 25% of the CPU. And I mean exactly, never 24%, never 26%, always 25% Also, I've run ProcMon to see if devenv is actually doing something, but it's doing absolutely nothing external of the process. No disk, network, registry access. Nothing. This is getting really aggravating because I have a large code base to deal with and the only other way of jumping to the definition is to first search for it. Has anyone run into a similar issue? And, better yet, know a fix?

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• Using MinGW to compile a SFML project

  - by Kyle Martin

  Okay, so I have a C++ project that uses SFML, and I want to be able to compile it from the CMD using MinGW. I have it so I can compile.cpp's, however, I just need to know what more I have to do in order for it to work with SFML. I tried compiling it with CodeBlocks and MinGW, and it works fine, until I try to run it, at which point it tells me that sfml-system.dll is missing from my computer. Does this mean I installed it incorrectly? I followed the CodeBlocks installation down to the letter, from what I could tell... I put the include\SFML in the include\ of MinGW, and I put all the *.a's from lib\ into the \lib of MinGW as well. Thank you for the help you can give! Kyle

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• How to generate graphs and statistics from SQLAlchemy tables [Python]?

  - by Az

  Hi all, After running a bunch of simulations I'm going to be outputting the results into a table created using SQLAlchemy. I plan to use this data to generatw statistics - mean and variance being key. These, in turn, will be used to generate some graphs - histograms/line graphs, pie-charts and box-and-whisker plots specifically. I'm aware of the Python graphing libraries like matplotlib. The thing is, I'm not sure how to have this integrate with the information contained within the database tables. Any suggestions on how to make these two play with each other? The main problem is that I'm not sure how to supply the information as "data sets" to the graphing library. Thanks in advance.

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• Learning how to program real things.

  - by Sean

  How would you guys recommend I actually learn to program real things? I mean, I know how to do basic academic things. I can implement a templated stack/queue/map/etc. data structure in C++ or Java or whatever. I can make a text-based hangman game or whatever. Etc etc. But how can I learn to program something real, something useful? I've done project Euler up to question 100 or so, and I feel like that's given me more mathematical maturity but not programming maturity. Should I buy a book and follow exercises, struggle through interesting projects, etc, ? In short, how did you guys transition from academic exercises to real, fun and/or useful programs?

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• C / JSON Library in popular Linux distros?

  - by Tim Post

  I have a program written in C that has to input and output JSON over a local domain socket. I've found several C / JSON libraries that 'almost work' through searches. Prior to taking one of the libraries that I found .. I want to be sure that I'm not over-looking a library that is commonly found on modern Linux distros. I'd also really appreciate links to libraries that you use. Most likely, I'll just drop it in tree, unless I realize that I've over looked something widely distributed. I am tagging this as subjective because the answer that I select is the one linking to a library that works for me, that does not mean its the 'best' library. I want to take an existing array and easily convert it to a buffer that can be sent, or take a buffer and easily convert it into an allocated array. Thanks in advance!

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• looking for information on porting Linux apps to windows

  - by claws

  Today I've encountered a very good book : UNIX to Linux® Porting: A Comprehensive Reference By Alfredo Mendoza, Chakarat Skawratananond, Artis Walker This reminded me of the thing I always wanted to know. "Porting Linux apps to Windows". I mean porting native Linux apps to native Windows with no platforms involved. If I can find any good book which explains this topic. I've lot of amazing linux command line tools in mind which needs a windows port. Please point me to relevant articles/tutorials/books. PS: please don't tell me to use linux emulation platforms like Cygwin.

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