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  • Repeater vs. ListView

    - by MoezMousavi
    I do really hate repeater. I was more a GridView lover but after 3.5 be born, I prefer ListView.  The first problem with Repeater is paging. You will need to write code to handle paging. Second common problem is empty data template. Have a look at this:             if (rptMyRepeater.Items.Count < 1)             {                 if (e.Item.ItemType == ListItemType.Footer)                 {                     Label lblFooter = (Label)e.Item.FindControl("lblEmpty");                     lblFooter.Visible = true;                 }             }   I found the above code is usefull if you need to show something like "There is no record" is your data source has no records. Although the ListView has a template.   If you combine ListView with a DataPager, you will be in heaven as it is sorting the paging for you without writing code. (http://msdn.microsoft.com/en-us/library/system.web.ui.webcontrols.datapager.aspx)     Note: You have got to bind ListView in PreRender, it doesn't work properly in PageLoad   More: http://www.4guysfromrolla.com/articles/061009-1.aspx

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  • How to start programming in Windows?

    - by ilhan
    I've made simple programs in C and C++ with simple compilers (learned it in university; I'm Statistics student). Also I'm amateur PHP programer. Now I want to start programming for Windows. apps with user interface apps without user interface My aim is just to see how it is done. And I might make a basic app that interacts with a database which is in a web server. Where should I start? Windows Visual Studio? .NET? What should I know?

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  • Non-mathematical Project Euler (or similar)?

    - by Juha Untinen
    I checked the post (Where can I find programming puzzles and challenges?) where there's a lot of programming challenges and such, but after checking several of them, they all seem to be about algorithms and mathematics. Is there a similar site for purely logic/functionality-based challenges? For example: - Retrieve data using a web service - Generate output X from a CSV file - Protect this code against SQL injection - Make this code more secure - What is wrong with this code (where the error is in logic, not syntax) - Make this loop more efficient Does a challenge site like that exist? Especially one that provides hints and/or correct solutions. That would be a very helpful learning site.

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  • How to organize functional programs

    - by bleakcabal
    In OOP, your basic unit of organization for code is the class. A frequently used methodology in Java, C# and similar languages is to organize your code around having one file for each class with the file name following the class name. You can consider each of these class as a unit of organization to group a single concept. These classes are in in namespaces which often follow the directory structure of the files in the solution/project. Namespaces are another level of organization. How are large projects in functional languages typically organized? How to you determine how to split your functions into different files? Are other units of grouping beside files used? How is code typically organized within a single file?

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  • Google analytics not provided for 55% of total traffic

    - by Neolisk
    I've been here and here to learn what (not provided) means. Now the question is if what I am seeing in my Google Analytics stats for my website is considered normal (and whether I can/should do anything about it). Here are the statistics from one day, but other days are similar: 102 visits, 57 is from (not provided), that's over 55% of unknown keywords. Is it normal to have it like that? Does google plan to do anything about it? In other words, what's the perspective? In my understanding, with this approach, as people switch to https, Analytics will stop being useful. Please correct me if I am wrong in my assumptions.

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  • How to get experience in large scale databases?

    - by Justin
    I have written applications that are very small scale and the code I write works fine for them. But I have often wondered how the server side code I write would scale up from 100s of queries per day to millions. Also when looking at possible jobs/projects, people are often looking for developers with experience in this sort of high traffic database design so I would at least like to be able to say, I havent gotten to work on a project that was this popular, but I at least have tried to simulate it. Are there tools or frameworks that can generate a lot of traffic or at least simulate what would happen with traffic on different orders of magnitude so I could get some practice writing optimized code for higher traffic applicaitons?

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  • Java Error Using Loops [migrated]

    - by Shaun
    I am facing a error in Java using the method Loops. I am a basic user learning Java and I am following a book with teaches you the basics of Java. I have this problem when I use this code in my Java Program. It gives me an red line under my code. Here's my code: public class Game{ public static void main(String[] args){ for (int dex = 0; dex < 1000; dex++) { if (dex % 12 == 0) { System.out.println(“#: “ + dex); } } } } I have been following the tutorials correctly. I am a bit lost where I have gone or done wrong. I have my public static codes and such as you'd require in any Java programming. Here's are the error given): Cannot resolve method: 'Println(? , ?)' Expression expected ',' or ')' expected Unexpected Token ';' expected

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  • How often do CPUs make calculation errors?

    - by veryfoolish
    In Dijkstra's Notes on Structured Programming he talks a lot about the provability of computer programs as abstract entities. As a corollary, he remarks how testing isn't enough. E.g., he points out the fact that it would be impossible to test a multiplication function f(x,y) = x*y for any large values of x and y across the entire ranges of x and y. My question concerns his misc. remarks on "lousy hardware". I know the essay was written in the 1970s when computer hardware was less reliable, but computers still aren't perfect, so they must make calculation mistakes sometimes. Does anybody know how often this happens or if there are any statistics on this?

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  • Script to calculate the Median value for SQL Server data

    The standard SQL language has a number of aggregate functions like: SUM, MIN, MAX, AVG, but a common statistics function that SQL Server does not have is a built-in aggregate function for median. The median is the value that falls in the middle of a sorted resultset with equal parts that are smaller and equal parts that are greater. Since there is no built-in implementation for the median, the following is a simple solution I put together to find the median. Get smart with SQL Backup ProPowerful centralised management, encryption and more.SQL Backup Pro was the smartest kid at school. Discover why.

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  • Continuous Integration, what are the strategies to manage binary content?

    - by sebas
    Currently we are testing various configurations between Feature Branching and CI with Feature toggling. I can see there are several viable options out there for the code, but I also know that CI totally relies on the possibility to merge the code. So I wonder, how do you manage CI with binary data, like art assets? I can also see another problem: all the code can be tested before to commit, I can even validate the data before to commit, but how can I test the art?! Should I use another methodology for art content?

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  • How to write loosely coupled classes in node.js

    - by lortabac
    I am trying to understand how to design node.js applications, but it seems there is something I can't grasp about asynchronous programming. Let's say my application needs to access a database. In a synchronous environment I would implement a data access class with a read() method, returning an associative array. In node.js, because code is executed asynchronously, this method can't return a value, so, after execution, it will have to "do" something as a side effect. It will then contain at least 1 line of extraneous code which has nothing to do with data access. Multiply this for all methods and all classes and you will very soon have an unmanageable "code soup". What is the proper way to handle this problem? Am I approaching it the wrong way?

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  • Why is Prolog associated with Natural Language Processing?

    - by kyphos
    I have recently started learning about NLP with python, and NLP seems to be based mostly on statistics/machine-learning. What does a logic programming language bring to the table with respect to NLP? Is the declarative nature of prolog used to define grammars? Is it used to define associations between words? That is, somehow mine logical relationships between words (this I imagine would be pretty hard to do)? Any examples of what prolog uniquely brings to NLP would be highly appreciated.

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  • Wordpress Multisite (Subfolders) - Google Analytics Tracking

    - by mmundiff
    I have a Wordpress multisite subfolder instance that I would like to track via Google Analytics. I guess optimally this would be a plugin which I could track each site in two places The Main Tracking Code which totals all traffic from the Multisite instance The Individual Site tracking code to see how each site specifically is doing. I think this plugin would have worked for me if I had a subdomain multisite instance: http://wordpress.org/extend/plugins/google-analytics-multisite-async/installation/ I know I can manually place the dual tracking code (http://www.markinns.com/articles/full/adding_two_google_analytics_accounts_to_one_page) but that would involve editing a theme and I have multiple sites using TwentyEleven template. I don't think I can edit the theme and not have it wreak havoc on the rest of the sites using TwentyEleven. So has anyone done this? Is there a a technique I'm missing? Is there a plugin available to do this in Multisite Subfolder installations? Is there a way to manually insert GA codes into themes which are used by multiple sites? Any insight is appreciated.

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  • Android 2.2 repéré sur le Net, la prochaine version de l'OS mobile de Google pourrait arriver offici

    Android 2.2 repéré sur le Net La prochaine version de l'OS mobile de Google pourrait arriver officiellement en mai "Froyo", nom de code de la future version d'Android, a été repéré sur le Net. Google serait donc en train de tester Android 2.2 en interne. C'est en tout cas ce que croit savoir Android and Me, un site spécialisé - entre autre - dans la mesure du trafic d'Android. [IMG]http://ftp-developpez.com/gordon-fowler/android22.png[/IMG] Cette nouvelle version proposera un compilateur JIT (pour Just In Time), une méthode qui permet la compilation en temps réel d'un code vers le code natif de l'appareil et de garder le résultat en ...

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  • Creating an Interface To a Language's Standard Library?

    - by Nathan Arthur
    In the process of learning test-driven development, I've been introduced to dependency injection and the use of interfaces, and have started using these concepts in my own PHP code in order to make it more testable. There have been times when I've needed to test code that was doing things like calling the PHP time() function. In order to make these tests predictable, it seemed logical to create an interface to the standard PHP functions I use so that I can mock them out in my tests. Is this good software design? What are the pros and cons of doing this? I've found myself groaning at how quickly my PHP interface can stick its fingers into everything I do. Is there a better way to make code that relies on PHP-accessed state and functions more testable?

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  • Learning the nuances of a language (C++)

    - by prelic
    So I'm a recent college graduate, and I really enjoy working in C++; I worked with it a lot in school, and would like to pursue a career writing in C or C++. The problem I'm having is that I'm trying to learn the nuances of C++. I'm not talking about the basics, or even advanced concepts like templates, namespaces, etc...I'm talking about the real nitty-gritty stuff like undefined behavior and stuff like that. When I'm interviewing, and they put a bizarre piece of C++ code in front of me, and ask me what the output will be, I want to be able to nail those questions. Obviously experience is a great way to learn, but when I write code for practice, I [obviously] know what it does. Reading open-source projects have been good practice, but I find that there tends to be an enormous learning curve just understanding the organization of the code (because the projects tend to be large). So basically what I'm asking is, what should I do now? Any tips are greatly appreciated!

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  • Help on PHP CURL script [closed]

    - by Sumeet Jain
    This script uses a cookie.txt in the same folder chmoded to 777... The problem i am facing is i hav many accounts to login... Say if i hav 5 accounts...i created cookie1.txt,cookie2.txt an so on.. then the script worked..with the post data But i want this to be always logged in and post data.. Can anyone tell me how to do this????? Code which works for login and post data is http://pastebin.com/zn3gfdF2 Code which i require should be something like this ( i tried with using the same cookie.txt but i guess it expires :( ) http://pastebin.com/45bRENLN Please help me with dealing with cookies... Or suggest how to modify the code without using cookie files...

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  • Master Data Management - The Trend Towards Multi-Domain and Other Realities

    - by Mala Narasimharajan
    In my quest to keep my fingers on the pulse of MDM, I recently found a pretty interesting article.  The article was published in Information Week and provides some interesting statistics from a recent survey conducted by the analyst firm, The Information Difference.  Let's take a look: Of the 130 organizations surveyed, 53% have live operational MDM implementations 81% of those with live operational MDM implementations report broad success - a huge improvement over 2011's 54% 64% developed a business case prior to their MDM deployment, while a daring 32% went ahead without a business case.    The article goes on to talk about the shift in vendors from focusing on customer data and product information management to one that is oriented around multi-domain master data management as well as other realities around MDM.  Take a look at the article. For more information on Oracle's master data management suite, click here. 

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  • How do I implement powerups for my Breakout clone?

    - by Eva
    I'm making a simple Breakout clone in Python that will have very many powerups/powerdowns (so far I came up with 26). Some will affect the paddle (paddle missile, two paddles, short paddle, etc.), some will affect the ball (slow ball, destructo-ball, invisible ball, etc.), some will affect the bricks (brick scramble, move up, bricks indestructible, etc.), and some will affect other game aspects (extra life, more points, less points, etc.). I'm pretty sure I have the code to draw the falling powerups and test for collisions with the paddle down, but I'm confused about how to code the effects of the powerups. Since there are very many powerups, it seemed inefficient to add specific methods to each component as done in this tutorial. However, I can't think of an other ways to implement the powerups. I found a page that hints at some way to design powerup behavior using classes, but I'm at a loss for how to do that. (A short example would help.) Please give me a short code example of another way to implement the effects of the powerups.

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  • php request youtube video is not working [closed]

    - by m3tsys
    what is wrong to this code? header('Content-type: application/x-shockwave-flash'); $video_id = $_REQUEST['id']; $content = readfile("http://www.youtube.com/watch?v=$video_id"); echo $content; or header('Content-type: application/x-shockwave-flash'); $video_id = $_REQUEST['id']; $content = readfile("http://localhost/embed/player.swf?file=http://www.youtube.com/watch?v=$video_id"); echo $content; Why this code is not working? How should look the code?

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  • In what stage of development should comments be written?

    - by CurtisHx
    I'm a student working an internship at a larger company, writing small business apps in C#. I've noticed that I don't comment my code as I write it. Rather, I comment my code when I'm in the debugging stage of development. As I'm tracking down bugs, I'll run across a block that makes me think "hmm...that might confuse someone in the future. I'd better comment that", and I'll add the appropriate comments. All of my comments are done this way. Is this an appropriate way of commenting? Should comments be written as the code is written? Or does it really matter when the comments are written, as long as they adequately explain why this block is used?

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  • Is "convention over configuration" not violating basic programming principles?

    - by Geerten
    I was looking at the WPF MVVM framework Caliburn.Micro and read that a lot of standard things are based on naming conventions. For example, automatic binding of properties in the View to properties in the ViewModel. Although this seems to be convenient (removes some boilerplate code), my first instinct reaction is that it isn't completely obvious to a new programmer that will read this code. In other words, the functionality of the application is not completely explained by its own code, but also by the documentation of the framework. EDIT: So this approach is called convention over configuration. Since I could not find any questions concerning this, I altered my question: My question is: Is convention over configuration a correct way of simplifying things, or is it violating some programming principles (and if so, which ones)?

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  • When/how to use Node with PHP or Ruby [closed]

    - by mbuurman
    For fun, I am creating a sort of microblogging webapp where people can comment on certain things. The basic "What is your opinion on this?" should be easy doable with just PHP (input the data in the database). Along with that I want to create a statistics page, also easy doable with PHP. But what if I want to update that page in realtime? How would I integrate Node on that page? Or shouldn't I use Node for that? When would you use Node?

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  • Is it OK to mix C and C++ in an interview?

    - by John Pell
    If I am asked in an interview to write down some code, should I completely stick with C++ or is it acceptable to "mix" the two to write easy code as it comes to my mind? I'll explain it: if I'm asked to create a "stack" data type, a C++ class is perfectly suited, while if I need to parse some strings a strtok/sscanf is far easier than STL. On the other hand, if I need a generic container STL and templates are the way to go. Everything can be done in C or in C++, but in an interview I can't code everything or remember every standard/STL function. What is an acceptable tradeoff?

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  • Alternatives to using cookies?

    - by theclueless1
    Whate are alternatives to using cookies/client-side storage for a PHP/MySQL based site on Apache. Scenario/Requirements: I want to try using some anti-bot code to prevent specific scrapers etc. from accessing the site. I would like to run this code before launching the rest of the site (before DB access etc.). I don't want to constantly run the same code on every page-load after a visitor has passed the initial check. I'd like to avoid the use of Cookies/Client side storage if at all possible. The only solution I can currently think of is to write files to the server based on the visitors IP/UA, or to write a list of them to a single file. Yet this has the limitation of multiple users through a proxy/same connection, etc ... So, any ideas/suggestions? Or am I simply over working the issue?

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