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• Java2D: Capturing an event on a Line object

  - by Algorist

  I have a JPanel which has a line, circle etc..Now when I click on the line, will the event get reported as a line event or a general jframe event. I need to be able to move the line, if the user clicks on the line and moves it. Is this possible in Java2d. Thank you.

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• I'm trying to ressurrect UnderC C/C++ interpreter [closed]

  - by Domingo

  Hello ! I'm trying to ressurrect UnderC C/C++ interpreter https://code.google.com/p/underc-fltk/ and I got it to compile with modern mingw compilers 3.4.5 and up, I need some experts advice on some topics: -Yacc/Bison grammar (example some problems with recognizing "unsigned" alone and "friend class") -ARM assembler only one function to call native os functions (X86 already there for windows and linux) -General improvements I expect it to work on WINCE, IPHONE, SYMBIAN in the near future. Thanks in advance for your expertize, time and attention !

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• Create a new output file in ant replace task

  - by Sathish

  Ant replace task does a in-place replacement without creating a new file. The below snippet replaces tokens in any of the *.xml files with the corresponding values from my.properties file. <replace dir="${projects.prj.dir}/config" replacefilterfile="${projects.prj.dir}/my.properties" includes="*.xml" summary="true"/'> I want those *.xml files that had their tokens replaced be created as *.xml.filtered (for e.g.) and still have the original *.xml. Is this possible in Ant with some smart combination of tasks and concepts ?

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• Neural Network Basics

  - by Stat Onetwothree

  I'm a computer science student and for this years project, I need to create and apply a Genetic Algorithm to something. I think Neural Networks would be a good thing to apply it to, but I'm having trouble understanding them. I fully understand the concepts but none of the websites out there really explain the following which is blocking my understanding: How the decision is made for how many nodes there are. What the nodes actually represent and do. What part the weights and bias actually play in classification. Could someone please shed some light on this for me? Also, I'd really appreciate it if you have any similar ideas for what I could apply a GA to. Thanks very much! :)

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• base-n series generator for a given number in java,,

  - by Senthil

  I want to create a program for generating the series for the given base-n. , for example if my input is 2,then series shuould be, 00,01,10,11,etc.,(binary) if my input is 10,then series shuould be,1,2,3,4,5,etc.,(decimal) is there any general mechanism to find these numbers so that I can program for base-n.,

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• Octave / Matlab: Extend a vector making it repeat itself?

  - by Tom

  Hi everyone, Is there a way to extend a vector by making it repeat itself? >v = [1 2]; >v10 = v x 5; %x represents some function. Something like "1 2" x 5 in perl Then v10 would be: >v10 1 2 1 2 1 2 1 2 1 2 This should work for the general case, not just for [1 2] Thanks in advance !

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• Values of Variables Matrix NumPy

  - by Max Mines

  I'm working on a program that determines if lines intersect. I'm using matrices to do this. I understand all the math concepts, but I'm new to Python and NumPy. I want to add my slope variables and yint variables to a new matrix. They are all floats. I can't seem to figure out the correct format for entering them. Here's an example: import numpy as np x = 2 y = 5 w = 9 z = 12 I understand that if I were to just be entering the raw numbers, it would look something like this: matr = np.matrix('2 5; 9 12') My goal, though, is to enter the variable names instead of the ints.

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• Learning OpenGL ES 1.x

  - by Kristopher Johnson

  What is the quickest way to come up to speed on OpenGL ES 1.x? Let's assume I know nothing about OpenGL (which is not entirely true, but it's been a while since I last used OpenGL). I am most interested in learning this for iPhone-related development, but I'm interested in learning how it works on other platforms as well. I've found the book OpenGL ES 2.0 Programming Guide, but I am concerned that it might not be the best approach because it focuses on 2.0 rather than 1.x. My understanding is that 2.0 is not backwards-compatible with 1.x, so I may miss out on some important concepts. Note: For answers about learning general OpenGL, see http://stackoverflow.com/questions/62540/learning-opengl Some resources I've found: http://khronos.org/opengles/1_X/ http://www.imgtec.com/powervr/insider/sdk/KhronosOpenGLES1xMBX.asp OpenGL Distilled by Paul Martz (a good refresher on OpenGL basics)

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• Including the functionality of a tool within another program?

  - by darren

  Hi there I would like to write an application, for my own interest, that graphically visualizes some network concepts. Basically I would like to show the output from tools like ping, traceroute and nmap. The most obvious approach seems to be to use pipes to call out to these tools from my C program, and process the information they return. However, I would like to avoid this heavy-handed approach if possible. My question is, is it possible to somehow link against these tools, or are there APIs that can be used to gain programatic access instead? If so, is this behavior available on a tool-by-tool basis only? One reason for wanting to do this is to keep everything in a single process / address space and to avoid dependance on these external tools. For example, if I wrote an iphone application, I would not be able to spawn processes to call out to the external tools themselves. Thanks for any advice or suggestions.

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• Best free, online Python tutorials and references for an experienced programmer?

  - by Jacques Bosch

  I have been doing Java, and C# for many years. Starting on my first big Python program now. I have written a few, very small, text processing scripts in Python years ago. I would like to know what is the best, free, online Python tutorial for experienced programmers. Python in general, but then also web programming with Python. Will be using Django. Thanx much.

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• Windows must have utilities [closed]

  - by Marcus

  What are your must have Windows utilities to help you with development? For me it's Unlocker This is about general Windows utilities, nothing specific to any language.

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• cannot assign <null> to implicit types local variable using asp.net

  - by rockers

  I have this var result = general.GetInformation(int.Parse(ID), F_account, F_Info, Types); this GetInformation is my Entity.Getinformation class.. when I am trying to assign result globly I am getting Cannot Assign to implicit typed local variable? var result = ? what should I assign in global? thanks

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• Right rotate of tree in Haskell: how is it work?

  - by Roman

  I don't know haskell syntax, but I know some FP concepts (like algebraic data types, pattern matching, higher-order functions ect). Can someone explain please, what does this code mean: data Tree ? = Leaf ? | Fork ? (Tree ?) (Tree ?) rotateR tree = case tree of Fork q (Fork p a b) c -> Fork p a (Fork q b c) As I understand, first line is something like Tree-type declaration (but I don't understand it exactly). Second line includes pattern matching (I don't understand as well why do we need to use pattern matching here). And third line does something absolutely unreadable for non-haskell developer. I've found definition of Fork as fork (f,g) x = (f x, g x) but I can't move further anymore.

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• Microsoft Fax Routing

  - by Gerard

  Hi All, I have a general question about MS Fax Routing service in Server 2008. Is it possible to have multiple extensions on the fax server. For example if the fax number is 90081000, can there be an extension for 1001, 1002 etc etc. Are we able to create these extension from within the MS Fax software and then route the different extensions to different email addresses? Thanks Regards g

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• Does anyone use the PL/SQL Web Toolkit?

  - by colinjameswebb

  Does anyone use the PL/SQL Web Toolkit at all? We use it for internal reporting where I work. However, does anyone have any experiences of it for producing client-facing websites? General advantages/disadvantages compared to other web languages, such as JSP, PHP etc

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• Unicode Regex; Invalid XML characters

  - by Ambush Commander

  The list of valid XML characters is well known, as defined by the spec it's: #x9 | #xA | #xD | [#x20-#xD7FF] | [#xE000-#xFFFD] | [#x10000-#x10FFFF] My question is whether or not it's possible to make a PCRE regular expression for this (or its inverse) without actually hard-coding the codepoints, by using Unicode general categories. An inverse might be something like [\p{Cc}\p{Cs}\p{Cn}], except that improperly covers linefeeds and tabs and misses some other invalid characters.

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• Ways to identify a particular exception from exception class

  - by Jibu P C_Adoor

  Hiii. Is there any way to uniquely identify a particular exception from the general exception class. i.e any property or method that retrieves a unique identifier that to identify a particular exception.

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• How can I quickly set the iPhone deployment target in Xcode?

  - by nevan

  I was reading this great article about Base SDK and Deployment targets and decided to try it out myself. The Deployment target seems to be buried in the Build settings, and not that easy to access compared to the Base SDK target (which is right there in the General tab of the project settings). To get to the Deployment settings now I have to Get Info, go to the Build tab, then search for "Deployment". Is there a quick way to check and access the Deployment target in Xcode that I'm missing?

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• Create thread is not accepting the member functon

  - by prabhakaran

  I am trying to create a class for network programming. This will create a general purpose socket with thread. But when I tried to creat the thread using createthread(). The third argument is producing errors. And from the net I came to know that I can't use the member functions as a argument to the createthread(). Is there any thing by which I can achieve this.

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• Client Server Communication and Persistence Frameworks

  - by soontobeared

  Hi, When using Persistence frameworks like Hibernate, JPA etc. on the server side, what are the general practices of passing on the data between client and server ? Are there any existing design patterns for the same ? Thanks.

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• What is the best way to organize object oriented code?

  - by Adam

  I haven't coded in java for a long time, and after coding in C, I'm having issued organizing my code for OOP. More specifically I'm not sure when to create a new method, and when to create a new class, and when to just lump everything together. Are there some general rules or guidelines on how it should be done?

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• How do i run the Android command line tools?

  - by fordays

  I'm still pretty new to Android and programming in general, and I can't seem to get the command line tools packaged with the Android SDK to work. I'm running Mac OSX and each time I try to run layoutopt, for example, the terminal returns, *-bash: cmd: command not found * Also, is it okay to have my SDK located in the Developer directory and my android project in some unrelated directory when using these tools?

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• Simple PHP form Validation and the validation symbols

  - by Cool Hand Luke UK

  Hi have some forms that I want to use some basic php validation (regular expressions) on, how do you go about doing it? I have just general text input, usernames, passwords and date to validate. I would also like to know how to check for empty input boxes. I have looked on the interenet for this stuff but I haven't found any good tutorials. Thanks

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• Can processor cores thrash each other's caches?

  - by Jørgen Fogh

  If more than one core on a processor is accessing the same memory address, will they thrash each other's caches or will some snooping protocol allow each to keep the data in L1-cache? I am interested in a general answer as well as answers for specific processors. How many layers of cache are invalidated? Will accessing another address within the same cache-line invalidate the entire line? What can you do to alleviate these problems?

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• Is there a recommended logging path/folder for ASP.NEt applications?

  - by the-locster

  Currently we use log4net and create a new folder (usually below C:) with write and create access rights for the worker process user. Is there perhaps a standard windows folder we should or could be using such as LOCALAPPDATA? I'm guessing that LOCALAPPDATA is a bad choice in the general case because IIS users tend to be non-interactive users and thus I don't think they have the usual user folder structrues available.

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