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• How do I know if I'm being truly clever and not just "clever"?

  - by Covar

  If there's one thing I've learned from programming is that there are clever solutions to problems, and then there are "clever" solutions to problems. One is an intelligent solution to a difficult problem that results in improved efficiency and a better way to to do something and the other will wind up on The Daily WTF, and result in headaches and pain for anyone else involved. My question is how do you distinguish between one and the other? How do you figure out if you've over thought the solution? How do you stop yourself from throwing away truly clever solutions, thinking they were "clever"?

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• Exposing APIs - third party or homegrown?

  - by amelvin

  Parts of the project I'm currently working on (I can't give details) will be exposed as an API at some point over the next few months and I was wondering whether anyone could recommend a third party API 'provider' (possibly Mashery or SO advertiser Webservius). And I mean recommend in the 'I've used these people and they are good' sense because although I can google for an answer to this question it is more difficult to get truly unbiased opinions. As an addendum is there much mileage in creating a bespoke API solution and has anyone had any joy going down that road? Thanks in anticipation.

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• strtod() and sprintf() inconsistency under GCC and MSVC

  - by Dmitry Sapelnikov

  I'm working on a cross-platform app for Windows and Mac OS X, and I have a problem with two standard C library functions: strtod() - string-to-double conversion sprintf() - when used for outputting double-precision floating point numbers) Their GCC and MSVC versions return different results. I'm looking for a well-tested cross-platform open-source implementation of those functions, or just for a pair of functions that would correctly and consistently convert double to string and back. I've already tried the clib GCC implementation, but the code is too long and too dependent on other source files, so I expect the adaptation to be difficult. What implementations of string-to-double and double-to-string functions would you recommend?

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• Can't seem to get Prototype AJAX form validation to work in conjunction with Codeigniter

  - by MattB

  Is there some kind of trick involved? Here's how I would envision it working: 1) User tries submitting the form 2) Event.observe captures this and sends an AJAX request to a special validation URL (PHP using Codeigniter) 3) If no errors were returned, continue submitting the original form 4) If errors were found, cancel form submission and display Mostly, I can't seem to get a separate AJAX validation request to work as the form continues submitting. I could use Event.stop(event), but have not found a way to re-start the process if no validation errors exist from the validation call. I'd post code, but I have about 15 examples of things I've tried and it would just clutter this question. Any ideas? :-( I didn't think form validation would be this difficult. Many thanks, - Matt

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• Screen scraping C application without using OCR or DOM?

  - by Mrgreen

  We have a legacy system that is essentially a glorified telnet interface. We cannot use an alternative telnet client program to connect to the system since there are special features built into the client software they have provided us. I want to be able to screen scrape from this program, however that's proving very difficult. I have tried using WindowSpy and Spy++ to check the window text and it comes up blank. It's a custom C program written by the vendor (they have even disabled selecting text). I'm really looking for a free option and something I may perhaps be able to use in conjuction with a scripting language. It seems the only ways to grab text is directly from the Windows GDI or from memory, but that seems a little extreme. Can anyone recommend any software/DLLs that might be able to accomplish this? I'd be extremely appreciative.

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• Datagrid for Symfony?

  - by Stick it to THE MAN

  I want to use a datagrid in one of my modules (Symfony 1.3, Propel ORM). I have spent a while searching the web, but everything I found expects a direct connection to teh db (mySQL) or is otherwise unsuitable. I found the datagrid plugin (http://symfony.swisscenter.com/datagrid/exemples), but the documentation/examples are in French - and I'm not too keen on learning French just for the sake of using the plugin - besides, if all the users are French speakers, then it will be difficult to get support/help if/when I do hget stuck. So my questions are: Is anyone aware of a good (PHP) datagrid component that I can use with SF? Is anyone out there (English speaker), using the SF datagrid plugin?

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• Using SQLite from PowerShell on Windows 7x64?

  - by jas

  I'm having a difficult time trying to load System.Data.SQLite.dll from PowerShell in Windows 7 x64. # x64 [void][System.Reflection.Assembly]::LoadFrom("C:\projects\PSScripts\lib\System.Data.SQLite.x64.DLL") # x86 #[void][System.Reflection.Assembly]::LoadFrom("C:\projects\PSScripts\lib\System.Data.SQLite.DLL") $conn = New-Object -TypeName System.Data.SQLite.SQLiteConnection $conn.ConnectionString = "Data Source=C:\temp\PSData.db" $conn.Open() $command = $conn.CreateCommand() $command.CommandText = "select DATETIME('NOW') as now, 'Bar' as Foo" $adapter = New-Object -TypeName System.Data.SQLite.SQLiteDataAdapter $command $dataset = New-Object System.Data.DataSet [void]$adapter.Fill($dataset) Trying to open the connection with the x64 assembly results in: Exception calling "Open" with "0" argument(s): "An attempt was made to load a program with an incorrect format. (Exception from HRESULT: 0x8007000B)" Trying to load the x86 assembly results in: Exception calling "LoadFrom" with "1" argument(s): "Could not load file or assembly 'file:///C:\projects\PSScripts\lib\System.Data.SQLite.DLL' or one of its dependencies. An attempt was made to load a program with an incorrect format." Any thoughts or ideas?

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• Is automated source translation seen as beneficial and/or necessary?

  - by busybutwantmore

  I have recently spent several years translating legacy FORTRAN into Java. Prior to that, I found myself translating FORTRAN into C (for which I wrote a simple translation tool). After all this work, I find myself wondering how many others are doing similar language-to-language translations and whether an automated way of doing so would be beneficial. I know about F2C, For_C, F2J and others, as well as some of the translation sites, but none seem to be all that successful. Having seen output from For_C, I can see why it just hasn't taken off. While it is technically correct, it is very difficult to maintain. So, I guess what I am wondering is if there were are tool that produced more maintainable, more grok-able code than the code I have seen, would developers use it? Or are developers as jaded as many posts seem to indicate and unwilling to use generated code as it could never be as good as their manually translated code?

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• Is C# WebAPI worth it? Can I use standart MVC4 to create my API?

  - by Steve

  I need to build a massive API and I'm trying out WebAPI instead of default MVC4 projects and it seems that it just makes things more difficult. Can have only 4 methods in controller Get, Post, Put, Delete, if I want more I need to modify route for that particular method FluentValidation won't work with WebAPI so I need to use DataAnnotations which I really don't want to. Can't use dynamic return data-types My question is: Would it really be that bad if I would use MVC4 project and use default ActionResults that return Json? What are real advantages of using WebAPI, why did they even made them in the first place if you can easily convert your project to API?

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• Add C pointer to NSMutableArray

  - by Georges Oates Larsen

  I am writing an Objective-C program that deals with low level image memory. I am using ANSI-C structs for my data storage -- Full blown objects seem overkill seeing as the data I am storing is 100% data, with no methods to operate on that data. Specifically, I am writing a customizable posterization algorithm which relies on an array of colors -- This is where things get tricky. I am storing my colors as structs of three floats, and an integer flag (related to the posterization algorithm specifically). Everyhting is going well, except for one thing... [actual question] I can't figure out how to add pointers to an NSMutableArray! I know how to add an object, but adding a pointer to a struct seems to be more difficult -- I do not want NSMutableArray dereferencing my pointer and treating the struct as some sort of strange object. I want NSMutableArray to add the pointer its self to its collection. How do I go about doing this? Thanks in advance, G

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• How do you modify a modal popup from ASP codebehind instead of letting it close?

  - by user328422

  I'm using SimpleModal to create a popup on an ASP.net application. The OK button calls a server-side function - and based on the resulta of that function I'd like to modify the popup (make some things visible, etc.) instead of letting it close. If that's too difficult, I'd like to open the popup again without the user having to re-click on anything. I'm just not sure what the best way to do this is. Currently the OK button in the popup looks like this: <asp:ImageButton ID="submitInfoBtn" OnClick="btnSubmitInfo_Click" ImageUrl="css/assets/btn_ok.png" runat="server"/> and there is nothing defined that tells anything that the OK button should close the popup (the Cancel button has class="simplemodal-close", so I would expect it to do just that, but not the OK button) - anyone have any ideas on the best way through this? Thanks in advance!!

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• Is there a way to configure Fiddler to intercept HTTP calls from a Windows service?

  - by Mike Chess

  We're in the process of replacing an old (5+ years) Windows service application built with VS2005 that makes an HTTP GET call. There are several things that make this difficult (such as the web server is on the customer's network and we can't connect directly to it) and, unfortunately, we'd prefer not to take down the running system to replace it with a WinForm version that can be monitored by Fiddler. The new code appears to be doing everything correctly, but, alas, it is failing to authenticate. Is there a way to configure Fiddler (2.2.9.1) to intercept HTTP calls from a Windows service?

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• Alternatives to MS project server

  - by Ajaxx

  I manage a small group and I'd keep my work breakdown in project. However, it's difficult to provide my team with an adequate view into the project and ability to report on their progress. I looked at MS Project Server (the sharepoint webpart) but it's an expensive proposition. Has anyone had any experience with any other tool (commercial is fine) that helps team view and report on their work as managed by MS Project? FWIW, I have looked at OpenProj and it appears to be a decent solution for viewing project files on the desktop. Anything web-based, keeping in mind that I'd like people to report on their work not just view their work.

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• IE Display bug - solved when using the "developer tools"?

  - by nute

  I have some Javascript/CSS issues with IE (no suprises?). So when I see the error in IE8, I go to Tools Developer Tools. Then I navigate to the correct DIV. I click on it, look around ... then I look again at my page, and the problem is fixed! This makes debugging pretty difficult... To see the display error, go to http://www.makemeheal.com/mmh/home.do in IE, and look at the "Your Recent History" module.

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• ASP.Net MVC null reference exception with TextArea name

  - by kingrichard2005

  Hello, I have a TextArea html helper method I'm calling in a foreach loop. Basically, when I initially load the View it works fine, but when i reload the View and load postback data, the same TextArea throws a NullReferencException and yet the variable I'm using in the TextArea as the name of the TextArea is not null. I've attached a picture below for demonstration: Sorry if it's difficult to see, the blue arrow below is pointing to the variable used to name the TextArea. Again, it works on initial load, but it errors out on postback when the page is reloaded. I'm not sure what's going on.

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• Learn Fundamentals of Silverlight 4 Data Binding

  - by Eric J.

  I'm just starting to work with Silverlight (no WPF experience either) and am having a difficult time finding a source that provides a full explanation of Data Binding. There is absolutely no lack of tutorials (starting with the ones on Silverlight.net or Scott Gu's blogs), but everything I have found is "by example". Is there a resource that explains how data binding works in Silverlight, from a Fundamental/Conceptual perspective, and provides end-to-end coverage of data binding features? The desire for a more fundamental source of information is driven by a number of questions that came up this afternoon in reviewing tutorials and writing sample apps, such as: Why can't I bind the value of a slider like this?: Value="{Binding=Age, Mode=TwoWay}" where Age refers to an int property in the object data context I bind in code-behind (the Visual Studio error message is Expected '[]'. How do I use the DataContext property in VS 2010? What's a Path, Relative Source, Static Source, ...?

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• how to deal with a static analyzer output

  - by Jim

  We have started using a static analyzer (Coverity) on our code base. We were promptly stupefied by the sheer amount of warnings we received (its in the hundreds of thousands) , it will take the entire team a few mounts to clear them all (obliviously impossible). the options we discussed so far are 1) hire a contractor to sort out the warning and fix them - he drawback: we will probably need very experiences people to do all these modifications, and no contractor will have required understanding of the code. 2) filter out the warning and deal only with the dangerous ones - the problem here is that our static analysis output will always be cluttered by warning making it difficult for us to isolate problems. also the filtering of the warning is also a major effort. either way, bringing our code to a state when the static analyzer can be a useful tool for us seems a monumental task. so how is it possible to work with the static analyzer without braining current development efforts into a complete stand still?

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• Should I include the binary in a Rails plugin or not?

  - by Nick Gorbikoff

  Hello. I'm trying to roll out a little Rails plugin that is basically is just a wrapper to a 7zip archiver. Should I include the 7zip binaries for windows, mac and linux with it or explain to user that it's a dependency and they need to get it working. I know it's not that difficult to install a 7zip, but what is the best practice in general. The reason I'm asking is cause I've ran so many times into gems that need some sort of dependency that doesn't compile properly or is not available in ready form for the OS in question and then I end up spending have a day hunting down for a binary or a way to compile the program. (Have happened to me both on Mac and Windows, not on Debian so far. )

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• PHP/HTML Strange refresh problem

  - by user270797

  After I upload my PHP files to my web host, I view the page by the URL. So what I usually do as I work on the page is make a change, upload, then refresh the browser to view my changes. What I find is that sometimes I refresh and it shows me a previous version of the page, I hit refresh 5 times and it shows me 5 different versions of the page some old changes some new changes, it makes it really difficult to know which is the latest version. I dont think this is a local caching problem, Ive disabled caching in all browsers, the problem occurs in IE, FF, Chrome I have a feeling it might be the web server. I believe the hosting company uses Zeus (?) web server product.

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• Bulletproof way to DROP and CREATE a database under Continuous Integration.

  - by H. Abraham Chavez

  I am attempting to drop and recreate a database from my CI setup. But I'm finding it difficult to automate the dropping and creation of the database, which is to be expected given the complexities of the db being in use. Sometimes the process hangs, errors out with "db is currently in use" or just takes too long. I don't care if the db is in use, I want to kill it and create it again. Does some one have a straight shot method to do this? alternatively does anyone have experience dropping all objects in the db instead of dropping the db itself? USE master --Create a database IF EXISTS(SELECT name FROM sys.databases WHERE name = 'mydb') BEGIN ALTER DATABASE mydb SET SINGLE_USER --or RESTRICTED_USER --WITH ROLLBACK IMMEDIATE DROP DATABASE uAbraham_MapSifterAuthority END CREATE DATABASE mydb;

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• Is it good to continue as MFC developer or good to know .NET as well?

  - by AKN

  Normally people say MFC is little clumsy. It makes UI developement slightly difficult to maintain since it has lot of auto generated code. It has good architecture (doc/view) but is not transparent like Win32 programming to understand how window program works in the background. So with this situation, is it good to extend the exposure on MFC programming or better to switch to .NET since for faster UI design with ease in maintenance. How globally companies are looking into MFC as a technology for UI developments. Are they comfortable in supporting their developers to continue with MFC or looking for changing their development technology.

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• Is there a language designed for code golf?

  - by J S

  I am not really a fan of code golf, but I have to wonder, is there an esoteric language designed for it? I mean a language with following properties: Common programs may be expressed in very short amount of characters It uses ASCII character set effectively (for example, common operators are not identifiers, so they don't have to be separated by whitespace, character usage is distributed more or less evenly because we cannot use Huffman coding and so on) Except the terse syntax, it should have very expressible and clean semantics (like, let's say, Python or Scheme); it shouldn't be difficult to program in It doesn't need features for large scale programs, such as OOP, but it definitely should allow custom functions and data structures It should have a large standard library, identifiers in this library should be as short as possible Maybe it should be called CG? Languages that can be a source of inspiration are Forth, APL and Joy.

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• VB 2010 Express - Debugger is not breaking on errors, Sub producing error simply terminates

  - by hamlin11

  I'm using VB 2010 Express. When an error occurs in the form load function, the form load function simply terminates. Then, when I click on one of my buttons, the button click sub also terminates if it has an error. I can wrap the code that produces the errors in try/catch blocks, but I'd very much rather the debugger to throw an immediate break point (like usual) or at least exit the program. It's making it very difficult to program, not knowing whether or not previous Subs executed fully. Any thoughts on what might be going on? Thanks

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• Data Model Evolution

  - by redleafong

  Hey guys, When writing code I am seeing requirements to change data models (e.g. adding/changing/removing data members from a class). When these data models belong to an interface, it seems difficult to change without breaking the existing client codes. So I am wondering if there is any best practice of designing interfaces/data models in a way to minimize the impact during evolution. The closest thing I can find from google is data contract versioning. But that seems to be a .net specific topic. I am wondering if the same practice applies to the Java world, or there is a different or generic way to deal with data model evolution. Thanks

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• Call function in query in Entity framework 3.5

  - by Ashwani K

  Hello All: I am trying to run following query in entity framework 3.5 var test = from e in customers where IsValid(e) select e; Here IsValid function takes current customer and validate against some conditions and returns false or true. But when I am trying to run the query it is giving error "LINQ Method cannot be translated into a store expression." Can any body tell me any other approach? One approach I can think of is to write all validation conditions here, but that will make the code difficult to read. Thanks Ashwani

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