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• Moving a C# Program to a different language

  - by waiwai933

  I am currently in charge of the development of the second version of program that was created in Microsoft .NET C#. I'm not doing any actual programming, but I am writing the specification for the programmer. I'd like to take it off the .NET codebase, but since Joel said on his blog never to rewrite code, and he does provide good reasoning, I'm inclined to think carefully. So my question is, (1) Are there any easy ways to transition? (Languages like .NET C#) (2) Would you take it off .NET? (3) If so, what language would you use? The reason I want to take it off of .NET is as far as my understanding of .NET, it has to be installed on the client. I'd prefer not to inconvenience my customers when there's a better way.

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• can i change membership provider GetAllUsers method?

  - by Tones

  Hi i am using vb.net and the .net membership provider. i want to bring back a gridview with user account information, like GetAllUsers() does. However i want to only bring back users with certain profile information, that will be users whos profile information matches the selected value in a dropdownlist on the same page. I am using profile provider to record just one extra piece of user information. Can i change or override the GetAllUsers method for this? Adding an extra parameter so its GetAllUsers by Profile. Membership has a FindUsersByName method, i want to do something similar with users by Profile. I am very much a noob with .net programming so i hope i have explained this ok.

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• Continuing education with Visual Basic 9

  - by TSSH

  I am completely new to programming and starting my education with visual basic 9 and SQL. I have read Visual Basic, in easy steps, 2nd edition by Mike Mcgrath. Although it was very easy to understand, it only gave me an introduction to learning VB. I'm looking for something more in depth, albeit for a beginner. I've read through the questions with a VB and book tag. Unfortunately, most of what I've found here references VB 6 and VB 8. Any recommendations? I cannot afford to create a library or college at the moment. So, I need to make sure that what I do buy counts. Thanks for any suggestions!

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• Why the good append syntax is so ugly, asks python newbie

  - by Cawas

  Now following my series of "python newbie questions" and based on another question. Go to http://python.net/~goodger/projects/pycon/2007/idiomatic/handout.html#other-languages-have-variables and scroll down to "Default Parameter Values". There you can find the following: def bad_append(new_item, a_list=[]): a_list.append(new_item) return a_list def good_append(new_item, a_list=None): if a_list is None: a_list = [] a_list.append(new_item) return a_list So, question here is: why is the "good" syntax over a known issue ugly like that in a programming language that promotes "elegant syntax" and "easy-to-use"? Why not just something in the definition itself, that the "argument" name is attached to a "localized" mutable object like: def better_append(new_item, a_list=[].local): a_list.append(new_item) return a_list I'm sure there would be a better way to do this syntax, but I'm also almost positive there's a good reason to why it hasn't been done. So, anyone happens to know why?

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• Windows Azure Platform, latest version?

  - by Vimvq1987

  I searched through internet but found nothing. The whitepapers of Windows Azure Platform say something like that: In its first release, the maximum size of a single database in SQL Azure Database is 10 gigabytes A few things are omitted in the technology’s first release, however, such as the SQL Common Language Runtime (CLR) and support for spatial data. (Microsoft says that both will be available in a future version.) I want to know that Microsoft had updated Windows Azure Platform and removed these limits or not? I decided to post this question here instead of Serverfault.com because it's more relative to programming than administration. Thank you

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• USB interface barcode scanners

  - by Nimbuz

  Not exactly a programming question, but close. I'll try my luck anyway. The keyboard wedge barcode scanner inserts the translation device between the reader and the keyboard. Data sent through a wedge appears as if it was typed into the computer, while the keyboard itself remains fully functional. Because a computer using a keyboard wedge can't tell the difference between data that is entered by a scanning device, or data that is entered by keyboard typing, a wedge can be used to easily add barcode reading capability to an existing computer without modifying software applications. I'd like to know if all USB interface barcode scanners automatically translate digital signals from a barcode reader into keyboard strokes for a applications just like wedge or is USB different from wedge? Many thanks

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• Does an IFilter Exist for Indexing Source Code Files?

  - by AMissico

  Anybody know of an IFilter that can index source code files beyond what the "Plain Text" filter can provide, with possibly a custom "Property Set" specific to programming? For example, I have 835MB in 41,000 files and 8,200 folders in my "Code Library" folder. I would like to perform searches such as "select distinct attributes on properties" or "select class exceptions" or "select classes with nested private classes". Preferrably, the IFilter can distinguish between various languages, so I can perform a query like "select class exceptions in VB.NET" or "select 'resume next' in VBScript". Other Examples "select all enum from folder('microsoft source code') in namespace 'system.io'"

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• word frequency problem

  - by davit-datuashvili

  hi in programming pearls i have meet following problem question is this:print words in decreasing frequency or as i understand probllem is this suppose there is given string array let call it s words i have taken randomly it does not matter String s[]={"cat","cat","dog","fox","cat","fox","dog","cat","fox}; and we see that string cat occurs 4 times fox 3 times and dog 2 times so result will be such cat fox dog i have following code in java mport java.util.*; public class string { public static void main(String[] args){ String s[]={"fox","cat","cat","fox","dog","cat","fox","dog","cat"}; Arrays.sort(s); int counts; int count[]=new int[s.length]; for (int i=0;i } } or i have sorted array and create count array where i write number of each word in array problem is that somehow index of integer array element and string array element is not same how to do such that print words according tu maximum elements of integer array? please help me

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• Aptify (.NET CRM Solution) to MailChimp Synchronization

  - by Cord Blomquist

  I'm trying to determine what is involved in synchronizing MailChimp, the popular bulk email service, with Aptify, the .NET-powered CRM my company uses. MailChimp supplies a .NET wrapper DLL which should make this process much easier. They also advertise a 3rd-party solution: Sync Module for .Net systems - MailChimp Sync Module makes it easier for developers to synchronize their lists from any datasource to mailchimp. It has been developed in C# on the mailchimp .NET wrapper. Check it out here. Provided by Wim De Coninck. What steps would have to take to use these tools to get MailChimp and Aptify playing nicely together?

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• How to make an existing socket fail?

  - by Huckphin

  OK. So, this is exactly the opposite of what everyone asks about in network programming. Usually, people ask how to make a broken socket work. I, on the other hand am looking for the opposite. I currently have sockets working fine, and want them to break to re-create this problem we are seeing. I am not sure how to go about intentionally making the socket fail by having a bad read. The trick is this: The socket needs to be a working, established connection, and then it must fail for whatever reason. I'm writing this in C and the drivers are running on a Linux system. The sockets are handled by a non-IP Level 3 protocol in Linux by a Linux Device Driver. I have full access to all of the code-base, I just need to find a way to tease it out so that it can fail. Any ideas?

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• Unit Testing Codeigniter Classes with fooStack - clashes

  - by DrPep

  I'm having 'fun' testing interactions in a CodeIgniter based web app. It seems when running the entire test suite "phpunit AllTests.php" it loads all of the test classes, their targets (Systems under Test) and creates a PHPUnit_Framework_TestSuite instance which presumably iterates over the classes which extend CIUnit_TestCase and runs them. The problem comes where you have multiple classes referencing another class (such as a library). As all the classes are loaded into the same process space, PHP reports "cannot redefine class xyz". Have I missed something here or doing something haenously wrong? In my test class i'm doing something like: include_once dirname(__FILE__).'/../CIUnit.php'; include_once dirname(__FILE__).'/../../libraries/ProductsService.php'; class testProductsService extends CIUnit_TestCase { public function testGetProducts_ReturnsArrayOfProducts(){ $service = new ProductsService(); $products = $service->getProducts(); $this->assertTrue(is_array($products)); } } The problem manifests as I have a controller which does: $this->load->library('ProductsService');

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• designing an API wrapper for Twitter, Facebook, Youtube etc...

  - by John Stewart

  I am looking at some pointers on how to design a wrapper for these social networking sites. Ideally what I want to do is create a black box where I am able to create an interface for other libraries to call certain functions to interact with these social networking sites. I am planning on using oAuth for most of these sites, I already have this layer designed in PHP. The other layer that I need for these social sites is the ability to push and pull content. For example, the ability to pull feeds for users from each of these networks and then should I cache them on my end? how would I cache all twitter, facebook etc activity feed and be able to account for resync etc? The networks that I am looking at are: Twitter Youtube Facebook LinkedIN Vimeo Flickr I am looking for ideas on how to tackle this in php? Any suggestions, opensource systems that I can learn from?

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• Best language to learn complementing java

  - by danielrutledge

  Hi all, I'm a somewhat experienced java ee developer, and I wish to complement my background by learning a newish language. I'm recently out of school where I did a ton of scientific computing and some functional programming, so I'm pretty comfortable with those families of languages. If at all possible, I'd like to pick a language with some market value, though I know this is tough to gauge. After snooping around a bit, the consensus seems to be one of Python/Ruby/Perl; how would each of these work with java in a web application environment, and in your opinion which complements it best? Any other suggestions for languages would also be welcome.

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• What is a good motivating example for dataflow concurrency?

  - by Alex Miller

  I understand the basics of dataflow programming and have encountered it a bit in Clojure APIs, talks from Jonas Boner, GPars in Groovy, etc. I know it's prevalent in languages like Io (although I have not studied Io). What I am missing is a compelling reason to care about dataflow as a paradigm when building a concurrent program. Why would I use a dataflow model instead of a mutable state+threads+locks model (common in Java, C++, etc) or an actor model (common in Erlang or Scala) or something else? In particular, while I know of library support in the languages above (and Scala and Ruby), I don't know of a single program or library that is a poster child user of this model. Who is using it? Why do they find it better than the other models I mentioned?

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• ruby syntactic sugar: dealing with nils..

  - by luca

  probably asked already but I couldn't find it.. here are 2 common situation (for me while programming rails..) that are frustrating to write in ruby: "a string".match(/abc(.+)abc/)[1] in this case I get an error because the string doesn't match, therefore the [] operator is called upon nil. What I'd like to find is a nicer alternative to the following: temp="a string".match(/abc(.+)abc/); temp.nil? ? nil : temp[1] in brief, if it didn't match simply return nil without the error The second situation is this one: var = something.very.long.and.tedious.to.write var = something.other if var.nil? In this case I want to assign something to var only if it's not nil, in case it's nil I'll assign something.other.. Any suggestion? Thanks!

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• Light-weight client/server DB?

  - by OverTheRainbow

  Hello, (This question falls between programming and finding a tool, so I guess I'll ask here in SO since it has more activity than SuperUser.) I like the simplicity of SQLite, but by design, it doesn't support concurrent access. The apps I write don't have heavy needs, so I'd like to avoid heavier solutions like MySQL that are more difficult to deploy (remote customers with usually no computer personnel). Does someone know of a good solution that would offer the following features? Client available for VB.Net applications The server itself doesn't have to be a .Net application. Actually, I'd rather a bare-metal server so that it can run even on embedded Linux hosts with less RAM/CPU than regular PC's Easy install: the client part should either be statically linked inside the client application or be available as a single DLL, and the server should just be a single EXE listening for queries, à la Fossil (http://www.fossil-scm.org) clients can locate the server on the LAN by broadcasting data picked up by the server, so users don't have to write down the IP address and paste it into each client open-source, or moderately priced closed-source Thank you.

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• Classical Round Table algorithm?

  - by user1795954

  Coins with different value are spread in circle around a round table . We can choose any coin such that for any two adjacent pair of coins , atleast one must be selected (both maybe selected too) . In such condition we have to find minimum possible value of coins selected . I have to respect time complexity so instead of using naive recursive bruteforce , i tried doing it using dynamic programming . But i get Wrong Answer - my algorithm is incorrect . If someone could suggest an algorithm to do it dynamically , i could code myself in c++ . Also maximum number of coins is 10^6 , so i think O(n) solution exists .

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• Using boost unordered map

  - by Amrish

  Guys, I am using dynamic programming approach to solve a problem. Here is a brief overview of the approach Each value generated is identified using 25 unique keys. I use the boost::hash_combine to generate the seed for the hash table using these 25 keys. I store the values in a hash table declared as boost::unordered_map<Key_Object, Data_Object, HashFunction> hashState; I did a time profiling on my algorithm and found that nearly 95% of the run time is spent towards retrieving/inserting data into the hash table. These were the details of my hash table hashState.size() 1880 hashState.load_factor() 0.610588 hashState.bucket_count() 3079 hashState.max_size() 805306456 hashState.max_load_factor() 1 hashState.max_bucket_count() 805306457 I have the following two questions Is there anything which I can do to improve the performance of the Hash Table's insert/retrieve operations? C++ STL has hash_multimap which would also suit my requirement. How does boost libraries unordered_map compare with hash_multimap in terms of insert/retrieve performance.

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• How To: Referencing LAPACK library from FORTRAN 95 in Cygwin

  - by cholmgreen

  I have a FORTRAN 95 program that needs to make some calls to the LAPACK library. I recently found out that Cygwin because it can install LAPACK as an extra option. Well, LAPACK exists in the /lib/lapack/ directory as "cyglapack.dll". Having only a very informal training in Fortran programming, I have no idea how to reference a .dll library as opposed to a .mod module. Any suggestions or directions to articles answering my question are GREATLY appreciated! (P.S. I did search first.. I don't think I know the proper terms to get a useful article.)

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• What some good books on software testing/quality?

  - by mjh2007

  I'm looking for a good book on software quality. It would be helpful if the book covered: The software development process (requirements, design, coding, testing, maintenance) Testing roles (who performs each step in the process) Testing methods (white box and black box) Testing levels (unit testing, integration testing, etc) Testing process (Agile, waterfall, spiral) Testing tools (simulators, fixtures, and reporting software) Testing of embedded systems The goal here is to find an easy to read book that summarizes the best practices for ensuring software quality in an embedded system. It seems most texts cover the testing of application software where it is simpler to generate automated test cases or run a debugger. A book that provided solutions for improving quality in a system where the tests must be performed manually and therefore minimized would be ideal.

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• Changing value of a Numeric Stepper

  - by REDDY

  Hi, I am a newbie to Flex and programming. I am trying something where I have 2 Numeric Steppers. One numeric stepper holds values from 0-230 and the other from 0.00-0.99. My question is how to change the value of the first numeric stepper when the second numeric stepper goes from 0.99 to 0.00. Suppose the first numeric stepper has a value 10 and the second numeric stepper is being incremented continuously. As it reaches 0.99 and on mouse up on the up arrow, 10 should change to 11 and this numeric stepper goes to 0.00. Could anyone help me out with some code or suggestion? Thanks is advance, REDDY

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• How do I detect the environment in Salesforce?

  - by Craig Harris

  I am integrating our back end systems with Salesforce using the web services. I have production and stage environments running on different URLs. I need to be able to have the endpoint of the web service call be different depending on whether the code is running in the production or sandbox Salesforce instance. How do I detect the environment. Currently I am considering looking up a user to see if there user name ends in 'devsandbox' as I have been unable to identify a system object that I can query to get the environment. Further clarification: The location I need to determine this is within the Apex code that is invoked when I select a button in Salesforce. My custom controller needs to know if it running in the production or sandbox Salesforce environment.

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• How to log with Ruby and eventmachine?

  - by Justin

  I'm writing an application using Ruby and the Eventmachine library. I really like the idea of non blocking I/O and event driven systems, the problem I'm running into is logging. I'm using Ruby's standard logger library. Its not that logging takes forever but it seems like something that shouldn't block and it does. Is there a library out there somewhere that extends Ruby's standard logger implementation to be non-blocking or should I just call EM::defer for my logging calls? Is there a way I can make eventmachine do this for me already?

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• How to know what you don't know?

  - by Ivo Danihelka

  Is there a way how to recognize that you don't know something? For example, I had some hard realizations: I didn't know that criticism isn't a good way to teach your friends. I realized that after reading How to Win Friends & Influence People. I didn't know about the fundamental needed for an indutive bias in machine learning. If I have read Mitchell's Machine Learning book early, I would know it. I haven't found it mentioned in other books and papers. Sorry if the question is too generic. The question could also mean: How to know that you are missing something important about your programming language?

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• What are the pro and cons of statically linking a library?

  - by Mathieu Pagé

  Hi, I want to release an application I developed as a hobby both for Linux and Windows. This application depends on boost (and possibly other libraries). The norm for this kind of application (a chess engine) is to provide only an executable file and possibly some helper files. I tough it would be a good idea to statically link the libraries so the executable would not have any dependencies. So the end user can just put the executable in a directory and start using it. However, while doing some research online I found some negative comments about statically linking libraries, some even arguing that an application with statically linked libraries would be hardly portable, meaning that it would only run on my system of highly similar systems. So what are the pros and cons of statically linking library? I already know that the executable will be bigger. But I can't see why it would make my application less portable.

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