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  • How to automatically scroll ScrollViewer - only if the user did not change scroll position

    - by Elad
    I would like to create the following behaviour in a ScrollViewer that wraps ContentControl: When the ContentControl height grows , the ScrollViewer should automatically scroll to the end. This is easy to achive by using ScrollViewer.ScrollToEnd(). However, if the user uses the scroll bar, the automatic scrolling shouldn't happen anymore. This is similar to what happens in VS output window for example. The problem is to know when a scrolling has happened because of user scrolling and when it happened because the content size changed. I tried to play with the ScrollChangedEventArgsof ScrollChangedEvent, but couldn't get it to work. Ideally, I do not want to handle all possible Mouse and keyboard events.

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  • c++ FFT Beat detection library?

    - by mokaschitta
    Hi, I am currently looking around for a good allround beat detection library / source code in C++ since I found it really hard to achieve satisfying results with the beat detection code I wrote myself using this tutorial: http://www.gamedev.net/reference/programming/features/beatdetection/ It's especially really hard if you want to make it work with any kind of music so I was wondering if there is something usable out there allready? Thanks!

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  • Looking for a good book on microprocessor internals

    - by David Holm
    I'm looking for a good book on how modern microprocessors are designed and work as I would like to increase my understanding of what makes them tick. Something that covers pipelines, superscalar architectures, caches etc. A book that is suitable for a programmer with several years of experience and has done and understands assembly programming and machine language, so basically not "CPUs for Dummies" or anything such. What books do people who design today's processors read for instance?

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  • What are interesting ideas for experimenting with Artificial Neural Networks?

    - by Gerald Kaszuba
    I'm after a list of possible neural network implementations that one can do to learn how to use it. What other possibilities are there? Here's the list so far: Games tic-tac-toe Connect 4 Chess Go Visual recognition Character recognition (typefaces, letters, numbers, etc) Facial recognition Audio recognition Language detection Male vs female Word recognition Language detection (natural, programming)

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  • Open-stackoverflow installation/download info

    - by fmsf
    Hey, You probably already know about this I guess it's a programming question. I've been trying to find with google the info, but the amount of results using "open stackoverflow" pointing to questions here in stackoverflow is making the search a bit hard. So what better place to ask than here. Where can i find information/documentation on how to install/use/extend the SO q&a system? I want to create a clone for a local community from my city.

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  • What is the easiest way to have a local LAMP installation for web development on mac OS X ?

    - by pixeline
    I'm new to mac os x. In the Windows XP world, there are packages available, like easyPHP, wampserver, uniformserver, that enable you to have a local webserver complete with php, mysql configured via an automatic installer. Really handy. I need the same on my new mac. I know mac os x comes with a local webserver. Is this already with php, mysql preinstalled? I'd like to have you guys advise on the easiest way to have this local lamp so that i can continue developing on this nice and shiny machine. thanks!

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  • Are there people using scheme out there?

    - by Nick
    Hey, I have just started to study computer sciences at the university where they teach us programming in scheme. Since i have learned c++ for the last 6 years, scheme appears a little odd to me. But they tell me you can write any program you can write in C or Java with it. Is anybody really using this language?

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  • Haskell newbie on types

    - by garulfo
    I'm completely new to Haskell (and more generally to functional programming), so forgive me if this is really basic stuff. To get more than a taste, I try to implement in Haskell some algorithmic stuff I'm working on. I have a simple module Interval that implements intervals on the line. It contains the type data Interval t = Interval t t the helper function makeInterval :: (Ord t) => t -> t -> Interval t makeInterval l r | l <= r = Interval l r | otherwise = error "bad interval" and some utility functions about intervals. Here, my interest lies in multidimensional intervals (d-intervals), those objects that are composed of d intervals. I want to separately consider d-intervals that are the union of d disjoint intervals on the line (multiple interval) from those that are the union of d interval on d separate lines (track interval). With distinct algorithmic treatments in mind, I think it would be nice to have two distinct types (even if both are lists of intervals here) such as import qualified Interval as I -- Multilple interval newtype MInterval t = MInterval [I.Interval t] -- Track interval newtype TInterval t = TInterval [I.Interval t] to allow for distinct sanity checks, e.g. makeMInterval :: (Ord t) => [I.Interval t] -> MInterval t makeMInterval is = if foldr (&&) True [I.precedes i i' | (i, i') <- zip is (tail is)] then (MInterval is) else error "bad multiple interval" makeTInterval :: (Ord t) => [I.Interval t] -> TInterval t makeTInterval = TInterval I now get to the point, at last! But some functions are naturally concerned with both multiple intervals and track intervals. For example, a function order would return the number of intervals in a multiple interval or a track interval. What can I do? Adding -- Dimensional interval data DInterval t = MIntervalStuff (MInterval t) | TIntervalStuff (TInterval t) does not help much, since, if I understand well (correct me if I'm wrong), I would have to write order :: DInterval t -> Int order (MIntervalStuff (MInterval is)) = length is order (TIntervalStuff (TInterval is)) = length is and call order as order (MIntervalStuff is) or order (TIntervalStuff is) when is is a MInterval or a TInterval. Not that great, it looks odd. Neither I want to duplicate the function (I have many functions that are concerned with both multiple and track intevals, and some other d-interval definitions such as equal length multiple and track intervals). I'm left with the feeling that I'm completely wrong and have missed some important point about types in Haskell (and/or can't forget enough here about OO programming). So, quite a newbie question, what would be the best way in Haskell to deal with such a situation? Do I have to forget about introducing MInterval and TInterval and go with one type only? Thanks a lot for your help, Garulfo

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  • Software tools for allowing end users to reprogram interfaces

    - by iceman
    What would be the examples of commercial software products (specially web-services) which allow the end user to reprogram their user-interface? I mean end users who do not know programming and they are allowed to add more functionality. One way of doing it is allowing XML gadgets like iGoogle does. What are the other approaches and also the technologies enabling them? This would be a futuristic application like collaborative software development for users.

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  • scp via java

    - by Lloyd Meinholz
    What is the best method of performing an scp transfer via the Java programming language? It seems I may be able to perform this via JSSE, JSch or the bouncy castle java libraries. None of these solutions seem to have an easy answer.

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  • What's your all-time creativity problem?

    - by furtelwart
    Sometimes, you stumble with programming. Sometimes, it's a lack of creativity, sometimes, you need a new solution. But there are a lot of situations, you stick in, every time they occur. For myself, it's when I have to create the interface between model and viewer. I designed my data structure very well and drew a GUI prototype, but the missing link won't be written. What are your personal barricades in developing projects?

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  • Fixing LOD gaps, T-junctions

    - by Jaka Jancar
    I'm creating a heightmap renderer. One of the examples for solving gaps when doing LOD I found is this: (from Game Programming Gems 2 - Greg Snook - Simplified Terrain using Interlocking Tiles) Wouldn't this still produce a gap, if the three vertices encircled with red were not co-linear? Shouldn't the middle triangle be split into two, as I marked with the orange line? Am I misunderstanding the problem, or is there a mistake in the example?

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  • How to get statistical distributions out of C++ Code?

    - by Bader
    I want some help in programming a random generator for different types of distribution using C++ language. for the following: Geometric distribution Hypergeometric distribution Weibull distribution Rayleigh distribution Erlang distribution Gamma distribution Poisson distribution Thanks.

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  • What was your most useful/inspiring computer science course?

    - by MPelletier
    I'm currently taking one course per semester, remotely, in a short 5 year program. My aim is to get better at my trade (programming and analysis, not surprisingly). However, I find that I'm not inspired by my choice of classes for next semester. Maybe I'm being too judgmental. I'd like to know what positive experience was gained from a course in particular. Have ou had a course that turned out to be an idea catalyst?

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  • How to Force a Method Call on a Property or Method of an Object in PHP?

    - by Noah Goodrich
    In my View (using Zend_View so the the view is an object), I make calls to object properties and methods to populate the template like so: <?= $this->user->name ?> // Outputs John Doe <br/> <?= $this->user->getCompany()->name ?> // Outputs Acme <br/> <?= $this->method() ?> // Outputs foobar If I make it so that all property requests (like for 'user') go through __get() is there any way that I can catch the subsequent calls so that I can force a method call on the final outputted value? For example so that I could do automatic escaping of output. As I see it right now, I either have to escape the input as it goes into the database or use compiled templates like Smarty does, or switch to assigning every variable to the View object so that it has direct control to force escaping before outputting the data.

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  • Neon toolkit and Gate Web Service

    - by blueomega
    I am trying to run any of the services from gate web service, in neon 2.3. Even Annie that runs so well in gate doesn't run, or better, it stay for indefinite time processing, a thing that should take no more than a couple of seconds. I run wizard, set input directory, leave file pattern as default and set a folder and name for the output ontology, shouldn't it be enough? Shouldn't i get something, even an error? I think its the location who's giving me problems. http://safekeeper1.dcs.shef.ac.uk/neon/services/sardine http://safekeeper1.dcs.shef.ac.uk/neon/services/sprat http://safekeeper1.dcs.shef.ac.uk/neon/services/annie http://safekeeper1.dcs.shef.ac.uk/neon/services/termraider How can i confirm it? Can i run it offline? Can anyone give me a hand? Also, i've seen sprat running on gate, on "SPRAT: a tool for automatic semantic pattern-based ontology population" Can anyone teach me how, and with what versions? Thx, Celso Costa

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  • C++ OpenSource project for beginner programmer?

    - by VeminZ
    I`m a beginner C++ programmer. And I want to pursue my career in system- and driver-programming. Can you suggest me an opensource projects to I improve my skills in low-level development? I am looking for a project with the following characteristic: - on C\C++ language based - a small project with a small amount of code, yet - UNIX-based systems designed Do you know that something like this?

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  • Receiving data with Winsock

    - by Tamir
    Right now, I'm programming the networking for my online game, and I'm not really sure what to do about receiving data. The problem is that I can't really guess the packet's size, so I thought of reading just 4 bytes from the packet and converting them to an int to know what's the packet's size. Then I'll just create a buffer in that size and receive the rest of the packet, is that a good idea? For your information, I'm using non-blocking i/o.

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  • Communicating with a MW-3170 magnetic card reader

    - by stukelly
    One of our customers has asked if we can interface with a serial magnetic card reader/encoder from a old EPOS system. The device has no make only the MW-3170 model number. Does anybody know how I can communicate with the device? I am currently looking for a programming manual on Google, without much success.

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  • .Net Library for parsing source code files?

    - by Jörg Battermann
    Does anyone know of a good .NET library that allows me to parse source code files, but not only .NET source code files (like java, perl, ruby, etc)? I need programmatic access to the contents of various source code files (e.g. class/method /parameter names, types, etc.). Has anyone come across something like this? I know within .NET it is reasonably possible and there are some libraries out there, but I need that to be abstracted to more types of programming languages.

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