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  • What makes a bad programming language bad?

    - by sub
    We have all seen things like the typing system of JavaScript (There is a funny post including a truth table somewhere around here). I consider this one of the main things that makes a programming language bad. Other things that spring to mind: Bad Error messages (Either obfuscated so you can't figure out whats wrong, not existing or simply too long and red) The language wasn't planned and just grew uncontrolled in all directions (PHP?) The language encourages bad programm(er/ing) habits such as: Global variables everywhere, bad variable names Inconsistent naming conventions inside the language I can't come up with any more at the moment and would be very happy to read what you think about this. What shouldn't be missing in a language created to be as bad (from the perspectives of the programmer, the company that hires to programmer, the team leader and the customer) as possible? (I ask this because I'm designing a bad, experimental language at the moment)

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  • Ways to generate database full structure based on Fluent NHibernate mappings

    - by Mendy
    I'm looking for ways to generate the application database full structure based on the NHibernate mapping data. The idea is to give the user an option to supply a database-connection string and then to build their a database with the structure that the application needs. The database need to independent - it means that it needs to work with any database that are supported by NHibernate. By full structure I mean that I want to generate also the index fields, and the relationship between tables. Is their few ways to accomplish this with NHibernate? Is so, what are they?

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  • What good technology/programming vodcasts are out there?

    - by Sam Saffron
    I'm trying to round up a list of programming/technology related Vodcasts. Related Question: What good technology podcasts are out there? Here I am looking for podcasts which include Video content like: dnr tv : http://www.dnrtv.com/ Channel 9 : http://channel9.msdn.com/ Dimecasts : http://dimecasts.net/ Railscasts : http://railscasts.com/ Zendcasts : http://www.zendcasts.com/ Net Tuts : http://net.tutsplus.com/category/videos/screencasts/ Feel free to edit this post, and improve the list. (with perhaps university lectures in RSS formats etc etc... ) For the voting to have even a slight amount of meaning please include only one vodcast per post. If this is a dupe, let me know and ill delete it.

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  • Language Agnositc Basic Programming Question

    - by Rachel
    This is very basic question from programming point of view but as I am in learning phase, I thought I would better ask this question rather than having an misunderstanding or narrow knowledge about the topic. So do excuse me if somehow I mess it up. Question: Let say I have class A,B,C and D now class A has some piece of code which I need to have in class B,C and D so I am extending class A in class B, class C, and class D Now how can I access the function of class A in other classes, do I need to create an object of class A and than access the function of class A or as am extending A in other classes than I can internally call the function using this parameter. If possible I would really appreciate if someone can explain this concept with code sample explaining how the logic flows.

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  • Separating weakly linked database schemas

    - by jldugger
    I've been tasked with revisiting a database schema we designed and use internally for various ticketing and reporting systems. Currently there exists about 40 tables in one Oracle database schema supporting perhaps six webapps. However, there's one unifying relationship amongst them all: a rooms table describing the room. Room name, purpose and other data are thrown into a shared table for each app. My initial idea was to pull each of these applications into a separate database, and perform joins between a given database and the room database. But I've discovered this solution prevents foreign key constraints in SQL Server 2005. It seems silly to duplicate one table for each app and keep those multiple copies synchronized. Should I just leave everything in one large DB, or is there something else I can do separate the tables without losing FK constraints?

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  • Using Flex to keep local SQLite database in sync with live server database

    - by DaveC
    I want to create a Flex 3 application running in Adobe Air that accesses an SQLite database and I need to keep this database in sync with an SQL server 2005 database running a website. Is this something that Flex supports or is it going to be a custom script? Also, has anybody done anything like this? Edit: The synchronisation can be done on a daily basis rather than real time. The data will be read only from a front end perspective with a CMS to do updates on the website.

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  • Which are your favorite programming language gadgets?

    - by FerranB
    There are some gadgets/features for programming languages that I like a lot because they save a lot of coding or simply because they are magical or nice. Some of my favorites are: C++ increment/decrement operator: my_array[++c]; C++ assign and sum or substract (...): a += b C# yield return: yield return 1; C# foreach: foreach (MyClass x in MyCollection) PLSQL for loop: for c in (select col1, col2 from mytable) PLSQL pipe row: for i in 1..x loop pipe row(i); end loop; Python Array access operator: a[:1] PLSQL ref cursors. Which are yours?

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  • Moderating computer-addiction through programming

    - by every_answer_gets_a_point
    i have an addiction to be on the computer all the time. it doesn't matter what i am doing as long as i am in front of it. i feel like the whole world is here and this is all that matters. i found that through some intellectual stimulation, like writing algorithms, it has helped me to be more satisfied with the time on the computer and i dont need it as much. if any of you have had experience with reliving your computer anxiety through writing code, can you tell me exactly what you wrote, and what you may recommend i work on? thank you for your programming advice

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  • Chained inequality notation in programming languages

    - by Davorin
    Is there a programming language that supports chained notation a < b < c to be used instead of a < b and b < c in conditional statements? Example: if ( 2 < x < 5 ) if ( 2 < x && x < 5 ) First statementlooks better to me, it's easier to understand and the compiler could use transitivity property to warn about mistakes (e.g. 5 < x < 2 would give a warning).

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  • How to securely communicate with a database using a java applet

    - by WarmWaffles
    I have been writing web applications for quite sometime in PHP with MySQL. I always stored my database connection information into a configuration variable and connected to the database that way. A client wants a java applet for their website to communicate with their database. I'm very hesitant on this because the applet is going to be public and I am not sure how I would go about storing the database connection information. I'm paranoid that someone would decompile my application or find some way to extract my database connection information and use it maliciously. Any suggestions on how to do this securely?

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  • Portable Programming IDE

    - by Click Ok
    Frequently I'm brainstormed with programming ideas that I would like to directly code. More or less like "Wow, that algorithm will rock! I need to write it now!". For this kind of "impulse" to write, I use http://www.jarte.com/ that is a cool portable text editor. If I'm near a cybecafe or a friend computer, I just plug the usb pen drive and start to write... So, I would like: 1) a portable minimalist IDE 2) with minimal OS requirement (ie.: I want run from XP, Vista, etc...) 3) any modern language (I can learn a new language if needed. I just want write/test the algoritm) 4) Syntax Highlight/intellisense is good, but not required 5) Free Is there something like this?

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  • Secure database connection. DAL .net architecture best practice

    - by Andrew Florko
    We have several applications that are installed in several departments that interact with database via Intranet. Users tend to use weak passwords or store login/password written on a shits of paper where everybody can see them. I'm worried about login/password leakage & want to minimize consequences. Minimizing database-server attack surface by hiding database-server from Intranet access would be a great idea also. I'm thinking about intermediary data access service method-based security. It seems more flexible than table-based or connection-based database-server one. This approach also allows to hide database-server from public Intranet. What kind of .net technologies and best practices would you suggest? Thank in you in advance!

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  • Genetic programming in c++, library suggestions?

    - by shuttle87
    I'm looking to add some genetic algorithms to an Operations research project I have been involved in. Currently we have a program that aids in optimizing some scheduling and we want to add in some heuristics in the form of genetic algorithms. Are there any good libraries for generic genetic programming/algorithms in c++? Or would you recommend I just code my own? I should add that while I am not new to c++ I am fairly new to doing this sort of mathematical optimization work in c++ as the group I worked with previously had tended to use a proprietary optimization package. We have a fitness function that is fairly computationally intensive to evaluate and we have a cluster to run this on so parallelized code is highly desirable. So is c++ a good language for this? If not please recommend some other ones as I am willing to learn another language if it makes life easier. thanks!

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  • Error in qsort function in Programming Pearls?

    - by Dervin Thunk
    Hello, is it just me or this code in Programming Pearls is wrong (quicksort wants 2 const voids, no?) If so, is my solution right? Apologies, just learning... int wordncmp(char *p, char* q) { int n = k; for ( ; *p == *q; p++, q++) if (*p == 0 && --n == 0) return 0; return *p - *q; } int sortcmp(char **p, char **q) { return wordncmp(*p, *q); } ... qsort(word, nword, sizeof(word[0]), sortcmp); Is this a solution? int sortcmp(const void *p, const void *q) { return wordncmp(* (char * const *) p, * (char * const *) q); }

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  • How does one advance in programming?

    - by Joe Barr
    I really have the felling as if I'm stuck in my own craft. I've been developing and learning for a while now and keep having the feeling that I should advance more, or even be more knowledgeable. I've started projects I didn't finish because I thought I lacked the knowledge and the skill to make that feature work just right, or to make that code magically appear on my screen. I've read books I didn't finish, thinking I wasn't advanced enough for the subjects they covered. I've been around long enough to know that everything comes with experience, hard work and dedication. Having said this, I just want to be able to work without getting stuck on a particular problem that involves my cluelessness of a language or a tool feature. My question to you would be, how does one advance in programming? What are the secrets (if any) to advance to the point of fluency in a particular language or a task. Thank you!

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  • Programming Contest Question: Counting Polyominos

    - by Martijn Courteaux
    Hi, An example question for a programming contest was to write a program that finds out how much polyominos are possible with a given number of stones. So for two stones (n = 2) there is only one polyominos: XX You might think this is a second solution: X X But it isn't. The polyominos are not unique if you can rotate them. So, for 4 stones (n = 4), there are 7 solutions: X X XX X X X X X X XX X XX XX XX X X X XX X X XX The application has to be able to find the solution for 1 <= n <=10 PS: Using the list of polyominos on Wikipedia isn't allowed ;) EDIT: Of course the question is: How to do this in Java, C/C++, C#

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  • Practical Python-based visual programming environment?

    - by Who8MyLunch
    I am looking for a practical visual programming environment based on Python. My primary application is algorithm development for processing remote-sensing imagery. I was initially inspired by LabVIEW from National Instruments, but that is more geared towards laboratory measurements and simulations. I write a lot of prototype code in Python and do a lot of interactive analysis with IPython. Does there exist a visual framework where a "program" is represented by connected nodes which each read data, do some work, and output data to the next node? I would like to use Python to write the code residing in each node. So far the best I've seen is Orange http://www.ailab.si/orange/, but it does not have the ability to start/stop individual nodes.

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  • Creating a Programming Language

    - by Lucifer
    Don't worry, I'm not going to ask that question, yet again... I am wanting to create my own programming language, just for learning sake. I don't want anything other than possibly a few links to head me into the right direction. MSDN Documentation on C# that is specific to what is required to create a language would be great! For the time being, all I am wanting to create is a very simple language that allows me to Create a Form, add a control to it, give that control a location, and maybe even some properties like a Text property, or maybe even a Color property. That's it! Any help / advice at all is greatly appreciated! Thank you :)

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  • Please suggest me the best way to design my database.

    - by Raymond Ho
    I have a table named "Pages" and a table named "Categories". Each entry of the table "Pages" is linked to the table "Categories". The "Categories" table have 5 entries, they are: "Car", "Websites", "Technology", "Mobile Phones", and "Interest". So each time I put an entry to the "Pages" table, I need to map it to the "Categories" table so are arranged properly. Here's my table: Pages ______ id [PK] name url Categories ______ id [PK] Categoryname Pages2Categories ______ Pages.id Categories.id So my question is, is this the most efficient way to create this kind of relationships between tables? It seems very amateur

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  • Map null column as 0 in a legacy database (JPA)

    - by Indrek
    Using Play! framework and it's JPASupport class I have run into a problem with a legacy database. I have the following class: @Entity @Table(name="product_catalog") public class ProductCatalog extends JPASupport { @Id @GeneratedValue(strategy = GenerationType.IDENTITY) public Integer product_catalog; @OneToOne @JoinColumn(name="upper_catalog") public ProductCatalog upper_catalog; public String name; } Some product catalogs don't have an upper catalog, and this is referenced as 0 in a legacy database. If I supply the upper_catalog as NULL, then expectedly JPA inserts a NULL value to that database column. How could I force the null values to be 0 when writing to the database and the other way around when reading from the database?

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  • Is there a database with git-like qualities?

    - by Mat
    I'm looking for a database where multiple users can contribute and commit new data; other users can then pull that data into their own database repository, all in a git-like manner. A transcriptional database, if you like; does such a thing exist? My current thinking is to dump the database to a single file as SQL, but that could well get unwieldy once it is of any size. Another option is to dump the database and use the filesystem, but again it gets unwieldy once of any size.

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  • How to Design Programs: An Introduction to Programming and Computing -- teacher guide access

    - by user295683
    Hello -- I'm a biologist switching careers, and trying to learn programming as a result. I stumbled upon the aforementioned book on Amazon, which jived with my liberal arts background. Despite my great satisfaction with the didactic approach, I was frustrated to see that the answers to the exercises are restricted to teachers only. As I am pursuing this endeavor on my own, this restriction dramatically cripples the value of this book. My request to the author's website for access to the answers has not been answered, and I would desperately like to continue with this book. Anyone have any experience dealing with the book's website, or at the very least a torrent of the answers? Otherwise, I suspect I will be relegated to using JavaScript for everything! Thanks!

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