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• Is there any self-improving compiler around?

  - by JohnIdol

  I am not aware of any self-improving compiler, but then again I am not much of a compiler-guy. Is there ANY self-improving compiler out there? Please note that I am talking about a compiler that improves itself - not a compiler that improves the code it compiles. Any pointers appreciated! Side-note: in case you're wondering why I am asking have a look at this post. Even if I agree with most of the arguments I am not too sure about the following: We have programs that can improve their code without human input now — they’re called compilers. ... hence my question.

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• File upload using HTML file type.

  - by vaibhav

  I want to upload a file on my aspx page. I am using <form id="frmId" method="post" enctype="Multipart/form-data"> <input type="file" id="file1"/> <input type="submit" id="btnsubmit"/> </form> and in code behind I am trying to get this file. Its not letting me to get the file until I use server side input file control. I don't want to use runat="server" attribute with my file control. Do anyone know how to do this.

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• Avoiding string copying in Lua

  - by Matt Sheppard

  Say I have a C program which wants to call a very simple Lua function with two strings (let's say two comma separated lists, returning true if the lists intersect at all, false if not). The obvious way to do this is to push them onto the stack with lua_pushstring, which works fine, however, from the doc it looks like lua_pushstring but makes a copy of the string for Lua to work with. That means that to cross over to the Lua function is going to require two string copies which I could avoid by rewriting the Lua function in C. Is there any way to arrange things so that the existing C strings could be reused on the Lua side for the sake of performance (or would the strcpy cost pale into insignificance anyway)? From my investigation so far (my first couple of hours looking seriously at Lua), lite userdata seems like the sort of thing I want, but in the form of a string.

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• Bullet physics engine, how to freeze an object?

  - by Markus

  Using Bullet 2.76 I'm trying to freeze an object (rigid body) so that it instantly stops moving, but still responds to collisions. I tried setting it's activation state to DISABLE_SIMULATION, but then it's virtually nonexistent to other objects. Furthermore, if objects "collide" with it when it's disabled, strange things begin to happen (object's falling through static bodies, etc.) I suppose, temporarily converting it to a static rigid body could work, but is there an existing "native" way to achieve this on Bullet's side? Edit: Is there a way to turn off gravity for a specific object?

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• Communication between (Desktop/Smartphone) Application and Web Application

  - by erlord

  Hi all I wonder what is the commonly used method and protocol for a, say, smartphone application to send its data to a web application (where these data should be proceeded and stored). My naive beginner's approach would be something like this: From my smartphone app, use a framework encoding my data object into a json object Send this object via http to a listener addressed by a dedicated URL On the server side, use a JSON parser and store it via ORM etc. into a database Questions: Is this too naive? 2a. If yes: What is the appropiate way to tackle this workflow? 2b. If no: What frameworks to use in JAVA for serializing/deserializing to/from JSON objects? Any example for a json listener in the web? Tutorial for a http-protocol based Java listener? Thanks for all answers and suggestions in advance. Regs Me

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• iPhone OS: Rotate just the button images, not the views

  - by Jongsma

  Hi, I am developing an iPad application which is basically a big drawing canvas with a couple of button at the side. (Doesn't sound very original, does it? :P) No matter how the user holds the device, the canvas should remain in place and should not be rotated. The simplest way to achieve this would be to support just one orientation. However, I would like the images on the buttons to rotate (like in the iPhone camera app) when the device is rotated. UIPopoverControllers should also use the users current orientation (and not appear sideways). What is the best way to achieve this? (I figured I could rotate the canvas back into place with an affineTransform, but I don't think it is ideal.) Thanks in advance!

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• Joomla of ASP.NET

  - by Sakhawat Ali

  Hi all, If i look into PHP they have Joomla, although it was initially build for CMS only but currently it is doing much more then that, like it have Shopping Card module, blogging, forums and many more. In short for PHP guy they have Joomla as opensource, which just need a little customization and the side is ready within 3days. Now what we have in ASP.NET, the most famous opensource here is dotNetNuke but don't support web2.0. My question here is that what do we have in ASP.NET platform or in other word what is Joomla of ASP.NET.

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• blank space on google home page

  - by topgun_ivard

  2 questions, i was doing nothing productive, and tried selecting the google home page (a left click drag and select whole page) on google.com i see that beside the search box, on the left side, there is an empty space &nbsp; i looked up the source code and there indeed was a <td width=25%>&nbsp;</td> stupid as it may sound, but i was still curious to know why the blank space is out there..or is it just a simple typo?? :) also, any idea what window.lol&&lol() does? curious yet again, google search didnt get me any result and i thought i would turn to stackoverflow to enlighten me... thanks, ivar

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• Running a python script in background from a CGI

  - by Cagey

  I have a python CGI which runs some script in the background and shows the stdout in the html page. I run the script when the user clicks some button in the page. My problem is when the script starts running the page becomes busy and the user can't use the other client side features in the page. What I want is: The script should run in background when the user clicks the button and should notify the CGI when run is complete. Then the CGI show should the stdout of the script run. How can this be done?

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• Simple WCF question.

  - by bearrito

  So I am learning WCF and I have run across an issue that I believe has to do with Instance Control/State but I am not sure. Workflow is as follows, Basic client/server paradigm. The client calls a Method RetrieveBusinessObjects(criteria) and the server calls the datalayer and then puts them in an IList on the server side. It does not return this list to the calling Client. The client would then call a method say DisplayBusinessObjects() which would retrieve the IList from the Server, serialize them, bring them across the wire and display them. If i try this using the WCFTestClient it works. If I run it from an actual client then I get back an BusinessObject[] of size 0. Which to me indicates I had no objects to return. Is that a state mgmt issue or am I missing something?

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• Convert wmd editor content in html format

  - by kiran826

  Hi, I am very new to using this wmd editor. In simple way, i am using this editor in my page using asp textbox with "wmd-input" class. It is perfectly behaving like a wmd editor. But when enter some data and do some formatting like bold, italic etc and read editor's content from server side, i can see that the data in plain text. Is there any way i can read the data in html formatted data? Thanks for your help.

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• Date Input in safari

  - by Fresheyeball

  So I am using the HTML5 date input type, primary to trigger the 'wheels' in iOS. Everything is working fine in ie7-9 Chrome and FF. But Safari for OSX is very upset. It sees the need to add little 'up and down' buttons to the right hand side and generally mess up my visual stylings. My attempt to fix this, is to change the date inputs back to text inputs for desktop browsers, and leave it as date inputs for mobile: unless device.is # 'device' is a lib I use to detect mobile browsers dateFields = $ 'input[type="date"]' dateFields.attr 'type', 'text' #this fails dateFields.datepicker() dateFields.on 'keyup', (e) -> e.preventDefault() $(@).val '' Beyond altering the input type with js, I am at a loss for how to fix this little bugger. Have you had to deal with this problem?

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• How can I debug or set a break statement inside an expression tree?

  - by Abel

  When an external library contains a LINQ provider, and it throws an exception when executing a dynamic expression tree, how can I break when that expression is thrown? For example, I use a third party LINQ2CRM provider, which allows me to call the Max<TSource, TResult>() method of IQueryable, but when it throws an InvalidCastException, I fail to break on the spot when the exception is thrown, making it hard to review the stack-trace because it's already unwinded when the debugger breaks it in my code. I've set "break on throw" for the mentioned exception. My debug settings are: Clarification on where exactly I'd want to break. I do not want to break in side the LINQ Expression, but instead, I want to break when the expression tree is executed, or, put in other words, when the IQueryable extension method Max() calls the override provided by the LINQ provider. The top of the stacktrace looks like this, which is where I would like to break inside (or step through, or whatever): at XrmLinq.QueryProviderBase.Execute[T](Expression expression) at System.Linq.Queryable.Max[TSource,TResult](IQueryable`1 source, Expression`1 selector)

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• PHP Scale image and then create image of specific size

  - by Ronny vdb

  The result I am trying to achieve is that the user can upload an image of any size, and the server side script will convert it to an image that has the dimension 1024x512. To save the aspect ratio of the image I first scale the image down by either the width or height to match the wanted dimensions. to do this I am using imagecopyresampled(): imagecopyresampled( $new_img, $src_img, $dst_x, $dst_y, 0, 0, $new_width, $new_height, $img_width, $img_height ) && $write_image($new_img, $new_file_path, $image_quality); If we take an image that is 1920x1200 as an example, the outputted image will be 819x512. However I still need a final result of 1024x512 so I want to add white borders to the image to will the width to 1024. How can I correct my imagecopyresampled function to acheive this?

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• What tools do you use when generating markup from mockups?

  - by Paul

  So I endeavor to spend most of time on the app server side of things but time to time I need to get my hands dirty and generate markup/css/js from a wireframe or mockup. As far as tools go, Ive found browsershots and Litmus app helpful and of course, vm's as well for checking things out live in ie-{6,7,8}. Otherwise I do the heavy lifting in vim. For generating new markup thats not tied to a target design I think some of the css frameworks & tools like sass look useful but Im skeptical of their utility when needing to generate markup to match a photoshop design. So what tips / tools do you keep in your markup generating utility belt when building solid markup from designs? My list so far: Browsershots Browserlab.adobe.com Haml / Less / Sass (not used but will probably explore)

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• ActiveRecord field normalization

  - by Bill

  I feel bad asking this question, as I thought I knew enough about Activerecord to answer this myslef. But such is the way of having SO available ... I'm trying to remove the commas from a field in a model of mine, I want the user to be able to type a number , ie 10,000 and that number be stored in the database as 10000. I was hoping that I could do some model-side normalization to remove the comma. I don't want to depend on the view or controller to properly format my data. I tried ; before_validation :normalize def normalize self['thenumber'] = self['thenumber'].to_s.gsub(',','') end no worky :(

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• File::GlobMapper doesnt seem to be exporting globmap

  - by justintime

  The following is pretty well copied from the documentation. use File::GlobMapper qw( globmap ); for my $pair (globmap '<*.tar.gz>' => '<#1.tgz>' ) { } And it gives String found where operator expected at globmapper_test1.pl line 4, near "globmap '<*.tar.gz>'" (Do you need to predeclare globmap?) (Using ActivePerl 5.10.0 on Windows) Side questions - if GlobMapper only exports one function, why is it set so you have to export it explicitly?

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• ASP.NET Dynamic form generation and submition

  - by d1k_is

  I need to create a form where for each day in the month the user will enter in several different values (Im thinking a grid sort of thing, values along the top, day of the month along the side) using ASP.NET forms with C# backend... So what would be the best way to generate this form? I dont want to hardcode that many controls as it would make the submition a little annoying but i also would need to be able to give it values entered in previous days and have it display them in the textboxes. How would i go about creating this form and also how would i get the values from the textboxes in the backend?

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• Help translating Reflector deconstruction into compilable code

  - by code poet

  So I am Reflector-ing some framework 2.0 code and end up with the following deconstruction fixed (void* voidRef3 = ((void*) &_someMember)) { ... } This won't compile due to 'The right hand side of a fixed statement assignment may not be a cast expression' I understand that Reflector can only approximate and generally I can see a clear path but this is a bit outside my experience. Question: what is Reflector trying to describe to me? Update: Am also seeing the following fixed (IntPtr* ptrRef3 = ((IntPtr*) &this._someMember)) Update: So, as Mitch says, it is not a bitwise operator, but an addressOf operator. Question is now: fixed (IntPtr* ptrRef3 = &_someMember) fails with an 'Cannot implicitly convert type 'xxx*' to 'System.IntPtr*'. An explicit conversion exists (are you missing a cast?)' compilation error. So I seemed to be damned if I do and damned if I dont. Any ideas?

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• OAuth Request token = null in android app

  - by jonney

  Hi, i am trying to authenticate something(in this case LinkedIn) using OAuth but the requested token always returns null? Here is my code below: public void authenticateAppOauthApi() { Log.d(TAG, "authenticateAppOauthApi"); OAuthServiceProvider provider = new OAuthServiceProvider( REQUEST_TOKEN_PATH, AUTHORIZE_PATH, ACCESS_TOKEN_PATH); OAuthConsumer consumer = new OAuthConsumer(CALLBACK_URL, API_KEY, SECRET_KEY, provider); OAuthAccessor accessor = new OAuthAccessor(consumer); Intent intent = new Intent(Intent.ACTION_VIEW); Log.d(TAG, "Intent intent = new Intent(Intent.ACTION_VIEW );"); // intent.setData(Uri.parse(url)); String url = accessor.consumer.serviceProvider.userAuthorizationURL + "?oauth_token=" + accessor.requestToken + "&oauth_callback=" + accessor.consumer.callbackURL; intent.setData(Uri.parse(url)); Log.d(TAG, "intent.setData(Uri.parse(url)); = " + url); mContext.startActivity(intent); Log.d(TAG, "finish authenticateApp"); } I basicaly followed the example here http://donpark.org/blog/2009/01/24/android-client-side-oauth thanks in advance

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• Benefit of outputting JSON as opposed to plain HTML

  - by Franco

  Hey guys, Just wondering which is best here. I want to output data from a table in my DB then put a lot of this data into a html table on the fly on my page. Im working with Java on the server side. Basically I pull the results form the DB and have the raw data..just what next? There is a chance I may want to take data from multiple tables in order to combine it into one table for my site. I retrieve the results of the query from the DB, now do i create a text from it in the form of json which i can parse as json using jquery upon the return of the object to my browser?(kind of a sub question of this question: Is just using a stringbuilder the correct way to make a json object to output?) Or.. Should i build the HTML as a string and output that to the browser instead? Which is better and why? Thanks in advance!

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• Using PUT/POST/DELETE with JSONP and jQuery

  - by ryanzec

  I am working on creating a RESTful API that supports cross-domain requests, JSON/JSONP support, and the main HTTP method (PUT/GET/POST/DELETE). Now while will be easy to accessing this API through server side code , it would nice to exposed it to javascript. From what I can tell, when doing a JSONP requests with jQuery, it only supports the GET method. Is there a way to do a JSONP request using POST/PUT/DELETE? Ideally I would like a way to do this from within jQuery (through a plugin if the core does not support this), but I will take a plain javascript solution too. Any links to working code or how to code it would be helpful, thanks.

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• Where are the function literals in c++?

  - by academicRobot

  First of all, maybe literals is not the right term for this concept, but its the closest I could think of (not literals in the sense of functions as first class citizens). The idea is that when you make a conventional function call, it compiles to something like this: callq <immediate address> But if you make a function call using a function pointer, it compiles to something like this: mov <memory location>,%rax callq *%rax Which is all well and good. However, what if I'm writing a template library that requires a callback of some sort with a specified argument list and the user of the library is expected to know what function they want to call at compile time? Then I would like to write my template to accept a function literal as a template parameter. So, similar to template <int int_literal> struct my_template {...};` I'd like to write template <func_literal_t func_literal> struct my_template {...}; and have calls to func_literal within my_template compile to callq <immediate address>. Is there a facility in C++ for this, or a work around to achieve the same effect? If not, why not (e.g. some cataclysmic side effects)? How about C++0x or another language? Solutions that are not portable are fine. Solutions that include the use of member function pointers would be ideal. I'm not particularly interested in being told "You are a <socially unacceptable term for a person of low IQ>, just use function pointers/functors." This is a curiosity based question, and it seems that it might be useful in some (albeit limited) applications. It seems like this should be possible since function names are just placeholders for a (relative) memory address, so why not allow more liberal use (e.g. aliasing) of this placeholder. p.s. I use function pointers and functions objects all the the time and they are great. But this post got me thinking about the don't pay for what you don't use principle in relation to function calls, and it seems like forcing the use of function pointers or similar facility when the function is known at compile time is a violation of this principle, though a small one.

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• Asp.net (c#) and a JEE 5 webservice

  - by arinte

  We have a asp.net app that talks to a pretty complex JEE 5 web service. Everything works fine except when we throw an exception. We throw a simple exception without any inner/orig exception, but we get this message on the .Net side. Additional XML content is present in the fault detail element. Only a single element is allowed. Works fine with a java client, as in we can get the exception message. What can we do?

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• Interface(s) inheriting other interface(s) in WCF services.

  - by avance70

  In my solution there's a few WCF services, each of them implementing it's own callback interface. Let's say they are called: Subscribe1, with ISubscribe1 and ICallback1, etc. It happens there are a few methods shared among ICallbacks, so I made a following interface: interface ICallback { [OperationContract] CommonlyUsedMethod(); } and i inherited it in all: ICallback1 : ICallback, ICallback2 : ICallback, etc. And deleted the CommonlyUsedMethod() from all callback interfaces. Now, on the service-side code, everything compiles fine and services can start working as usual. But, when I updated the service references for the client, CommonlyUsedMethod() dissapeared from the reference.cs file (the ISubscribeCallback part), and could no longer be used to send data to back to the client.

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