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• CodePlex Daily Summary for Sunday, November 25, 2012

  CodePlex Daily Summary for Sunday, November 25, 2012Popular ReleasesMath.NET Numerics: Math.NET Numerics v2.3.0: Common: Continued major linear algebra storage rework, in this release focusing on vectors (previous release was on matrices) Static CreateRandom for all dense matrix and vector types Thin QR decomposition (in additin to existing…

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• Matrix Multiplication with C++ AMP

  - by Daniel Moth

  As part of our API tour of C++ AMP, we looked recently at parallel_for_each. I ended that post by saying we would revisit parallel_for_each after introducing array and array_view. Now is the time, so this is part 2 of parallel_for_each, and also a post that brings together everything we've seen until now. The code for serial and accelerated …

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• CodePlex Daily Summary for Thursday, November 29, 2012

  CodePlex Daily Summary for Thursday, November 29, 2012Popular ReleasesJayData - The cross-platform HTML5 data-management library for JavaScript: JayData 1.2.5: What's new in JayData 1.2.5For detailed release notes check the release notes. Handlebars template engine supportImplement data manager applications with JayData using Handlebars.js…

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• boost fusion: strange problem depending on number of elements on a vector

  - by ChAoS

  I am trying to use Boost::Fusion (Boost v1.42.0) in a personal project. I get an interesting error with this code: #include "boost/fusion/include/sequence.hpp" #include "boost/fusion/include/make_vector.hpp" #include "boost/fusion/include/insert.hpp" #include "boost/fusion/include/invoke_procedure.hpp" #include…

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• Java PHP posting using URLConnector, PHP file doesn't seem to receive parameters

  - by Emdiesse

  Hi there, I am trying to post some simple string data to my php script via a java application. My PHP script works fine when I enter the data myself using a web browser (newvector.php?x1=&y1=...) However using my java application the php file does not seem to pick up these parameters, in fact I don't even…

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• Faster method for Matrix vector product for large matrix in C or C++ for use in GMRES

  - by user35959

  I have a large, dense matrix A, and I aim to find the solution to the linear system Ax=b using an iterative method (in MATLAB was the plan using its built in GMRES). For more than 10,000 rows, this is too much for my computer to store in memory, but I know that the entries in A are constructed by two known…

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• Multidimensional array problem in VHDL?

  - by Nektarios

  I'm trying to use a multidimensional array in VHDL and I'm having a lot of trouble getting it to work properly. My issue is that I've got an array of 17, of 16 vectors, of a given size. What I want to do is create 17 registers that are array of 16 * std_logic_vector of 32 bits (which = my b, 512). So,…

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• Boost::Spirit::Qi autorules -- avoiding repeated copying of AST data structures

  - by phooji

  I've been using Qi and Karma to do some processing on several small languages. Most of the grammars are pretty small (20-40 rules). I've been able to use autorules almost exclusively, so my parse trees consist entirely of variants, structs, and std::vectors. This setup works great for the common case:…

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• Join and sum not compatible matrices through data.table

  - by leodido

  My goal is to "sum" two not compatible matrices (matrices with different dimensions) using (and preserving) row and column names. I've figured this approach: convert the matrices to data.table objects, join them and then sum columns vectors. An example: > M1 1 3 4 5 7 8 1 0 0 1 0 0 0 3 0 0 0 0 0…

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• Accessing a vector<vector<int>> as a flat array

  - by user1762276

  For this array: vector<vector<int> > v; v.push_back(vector<int>(0)); v.back().push_back(1); v.back().push_back(2); v.back().push_back(3); v.back().push_back(4); I can output {1, 2, 3, 4} easily enough: cout << v[0][0] << endl; cout << v[0][1] << endl; cout…

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• Reading serialised object from file

  - by nico

  Hi everyone. I'm writing a little Java program (it's an ImageJ plugin, but the problem is not specifically ImageJ related) and I have some problem, most probably due to the fact that I never really programmed in Java before... So, I have a Vector of Vectors and I'm trying to save it to a file and read…

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• Effective optimization strategies on modern C++ compilers

  - by user168715

  I'm working on scientific code that is very performance-critical. An initial version of the code has been written and tested, and now, with profiler in hand, it's time to start shaving cycles from the hot spots. It's well-known that some optimizations, e.g. loop unrolling, are handled these days much…

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• CodePlex Daily Summary for Wednesday, May 26, 2010

  CodePlex Daily Summary for Wednesday, May 26, 2010New Projects3D File Manager: 3D File manager is an application that aims to show how could look file manager in 3D. It´s developed in C# and XNA frameworkAcies: Acies is a dungeon crawler game done with C# and XNA.ActiveWinery: The open source winery…

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• CodePlex Daily Summary for Monday, June 27, 2011

  CodePlex Daily Summary for Monday, June 27, 2011Popular ReleasesSQL Compact Bulk Insert Library: beta 2.0: Update, with ColumnMappings and support for IEnumerable implemented (for most data types, anyway).MiniTwitter: 1.71: MiniTwitter 1.71 ???? ?? OAuth ???????????? ????????、??????????????????? …

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• CodePlex Daily Summary for Monday, November 26, 2012

  CodePlex Daily Summary for Monday, November 26, 2012Popular ReleasesRedmine Reports: Redmine Reports V 1.0.7: added new sample report added new DateRange feature for report generation (see issue Tracker ID 15372) updated to latest MySql (6.6.4.0)sb0t v.5: sb0t 5.00 alpha 4: First public alpha…

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• CodePlex Daily Summary for Wednesday, November 28, 2012

  CodePlex Daily Summary for Wednesday, November 28, 2012Popular ReleasesCommand Line Parser Library: 1.9.3.23 beta: Fixes an issue notified by github user sbambrick about parsing negative numbers.MCEBuddy 2.x: MCEBuddy 2.3.10: Critical Update to 2.3.9: Changelog for 2.3.10 (32bit and 64bit) 1.…

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• Compilation problems with vector<auto_ptr<> >

  - by petersohn

  Consider the following code: #include <iostream> #include <memory> #include <vector> using namespace std; struct A { int a; A(int a_):a(a_) {} }; int main() { vector<auto_ptr<A> > as; for (int i = 0; i < 10; i++) { …

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• Compilng problems with vector<auto_ptr<> >

  - by petersohn

  Consider the following code: #include <iostream> #include <memory> #include <vector> using namespace std; struct A { int a; A(int a_):a(a_) {} }; int main() { vector<auto_ptr<A> > as; for (int i = 0; i < 10; i++) { …

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• CodePlex Daily Summary for Saturday, December 01, 2012

  CodePlex Daily Summary for Saturday, December 01, 2012Popular ReleasesCleverBobCat: CleverBobCat 1.1.1: Fix for 1.1.1.0 - Energy usage on back drive -> fixed - Breaking energy recharge -> fixed - Not stopped when energy disabled -> fixed - Area transfer range ->…

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• Problem implementing Blinn–Phong shading model

  - by Joe Hopfgartner

  I did this very simple, perfectly working, implementation of Phong Relflection Model (There is no ambience implemented yet, but that doesn't bother me for now). The functions should be self explaining. /** * Implements the classic Phong illumination Model using a…

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• Mass Ball-to-Ball Collision Handling (as in, lots of balls)

  - by BlueThen

  Update: Found out that I was using the radius as the diameter, which was why the mtd was overcompensating. Hi, StackOverflow. I've written a Processing program awhile back simulating ball physics. Basically, I have a large number of balls (1000), with gravity…

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• CodePlex Daily Summary for Tuesday, November 27, 2012

  CodePlex Daily Summary for Tuesday, November 27, 2012Popular ReleasesCodeGen Code Generator: CodeGen 4.2.6: IMPORTANT: If you are using CodeGen in conjunction with Symphony Framework then it is important that you do not upgrade to this version of CodeGen until…

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• How to maintain encapsulation with composition in C++?

  - by iFreilicht

  I am designing a class Master that is composed from multiple other classes, A, Base, C and D. These four classes have absolutely no use outside of Master and are meant to split up its functionality into manageable and logically divided packages. They also…

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• OpenGL directional light creating black spots

  - by AnonymousDeveloper

  I probably ought to start by saying that I suspect the problem is that one of my vectors is not in the correct "space", but I don't know for sure. I am having a strange problem with a directional light. When I move the camera away from (0.0, 0.0, 0.0) it…

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• Vector of Object Pointers, general help and confusion

  - by Staypuft

  Have a homework assignment in which I'm supposed to create a vector of pointers to objects Later on down the load, I'll be using inheritance/polymorphism to extend the class to include fees for two-day delivery, next day air, etc. However, that is not my…

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