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Hello, For some reason javac errors when I import any of the Apache-Spark classes. I've gone through a number of setup guides to see if there's some environment variable I'm missing, but most don't have a step where an environment variable is set. Anyone have a clue what I'm missing? …

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Hello, So I'm having trouble figuring out what the correct syntax is for a function with a return type that is a template type and is within a namespace. Anyone see anything wrong with the code below? -------.HPP file: #pragma once #ifndef EC_UTIL_H #define EC_UTIL_H #include "../CommonHeaders.hpp" #include "../core/common/APVertex.hpp" #include …

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Hello, So I was testing my matrix class and the results look questionable and the inverted matrix isn't returning the vertex to it's original value (a seperate issue). Given a perspective projection at 45 degrees with a near of 1 and a far of 1000, the camera at the orgin …

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As all of you can tell from the title, I need help understanding how to communicate to a USB port. Basically I need to send some bits to a usb micro controller and to do so I need to understand how you do it in C for both a Windows …

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First of all I apologize if the title is a bit vague, I couldn't phrase my question to fit in the given space. So given you have an array of floats that you want to cast as a pointer to a struct containing only floats, assuming the array size is …

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Hello, So I'm aware that OpenGL is Column major and DirectX is Row major, but how does that translate into a basic 1D array? So given the below visual matrix, what would the first 3 in the array of each platform and which 3 would be the x,y and z …

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Hello, So I have an option screen where 8 colored squares pop up for the user to select the background color. What I'm stuck at is how to set all of them to that color. Is there a way to bind them to a setting (FYI, this is a windows …

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Hello, So I'm creating the splash screen for my windows phone app, but I can't seem to get it to cover the whole screen. The way I'm doing it is through a popup. As a place holder, the user control xaml splash screen is practically identical to the main screen, …

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Hello, So windows has PPL for multithreading for loops, what's the linux equivalent to that?

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Hello, I'm using pause() to suspend threads until I need them and pthread_kill(thread, SIGCONT) to resume. It works the first time over with the thread unpausing the first time I send SIGCONT, but not the second time around. Does sending the signal cause it to be ignored and if so, …

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Hello, I've confused myself a bit with virtual functions. I know they're useful when you want to call the parents function via casting the class to it's parent, but I've found myself scratching my head on few cases. So... Lets say I have a parent Class P and a child …

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Hello, I'm fairly new to web development and I need a quick start to getting my website up. I'm planning on hosting the site and I don't expect much traffic as it's just for a start up company that I'm starting and I'm just using it as way of saying …

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Hello, I'm working on a project using the arduino board that connects to my computer via USB. Anyway, I opened the "file" (FYI using linux) for the board using the fopen call and I'm wonder if there's a way to check if there's data ready to read in. Also I …

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Hello, I'm working with a team on a program and freeglut is causing trouble for one of team members. He's the only member working under Windows and he's unable to get the scroll wheel to work. Does anyone know a library for windows that'll read in the mouse wheel input …

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Hello, I'm trying to use wxWidgets to get mouse, keyboard and joystick events without creating a window context as I'm using GLUT for that. Can it be done and if so how? All the examples I see have the events tied to some sort of visual context.

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How do I prevent holding when reading stdin? I'm creating a program with glut that uses the terminal for input and using fscanf() is holding up the process. How can I check the stream before calling fscanf()?

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Hello, Does anyone know a good cross platform library that can handle mouse and keyboard (and joystick if possible) events without needing to producing a window?

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Hello, Just recently I learned how to make a game with java using an applet and I was wondering how I’d go about making a java game for cell phones?

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Anyone have a clue what would cause the compiler to complain about static members and functions and virtual functions ? I've written a bunch of stuff with Qt in C++ without this problem. The only new thing is I've overrided a virtual function and created a few static data members …

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Hello, I'm new to QT and I need a little help making a custom widget . Basically I need to subclass QTableWidgetItem and have it draw a translucent image with a set color in the background. In some cases the color in the back ground pulses (dark to bright) so …

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Hello, Does anyone have a clue why using setitimer() and SIGALRM won't work if you modify the terminal using termios.h? Every time I run it I get segfault or the original signal handler (not the one I set). Just having [CODE] struct termios oldTerm, newTerm;[/CODE] seems to cause trouble. If …

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Hello, I know Java and Objective C are totally different languages, but I thought may be since both are object oriented languages, there maybe some similarities between the two to help me make the transition. I also know C, so some of the stuff is looking similar. Could someone help …

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Hello, I'm creating a program that involves coloring an image thats is gray scaled and has a transparent background. How do I do that?

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So I know how to do animation and I know to deal with components, but I don't know how to do both. How can I isolate the drawing of the components from the animation? The particular problem I'm having is when I have an opaque component over the animation? I …

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Hello, So I'm thinking of creating a few programs that don't use the provided components like the Button class. Basically I want to create components like a button, text field... etc, but with their own look and feel to them. I tried overriding methods of existing components and I tried …

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Hello, So I'm following this tutorial ([url]http://www.csharp.com/javacfort.html[/url]) to learn how to link java with C and I want to be able to link java to two C programs (one for linux and one for windows). How do I create a java class that figures out what OS it's on and …

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Hello, This is similar to the thread I did a while back, except this time I need to do it under linux. I'm using the latest version of Ubuntu. Can some some one show me how to send information (an array of char) to the rs232 port (synchronous communication) . …

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Hello, I just started using HTML and I need help making a web page for someone. The trouble I'm having is that I don't know how to change images when the mouse is over a link (the link is not the image, it's only text). Basically whenever the user hovers …

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Hello, I'm new to C++ and I need help figuring out how to send information to the rs232 port. It's going to be one way communication (PC to device). I've tried reading other tutorials, but none of them clearly explain what's going on in each part, so I often get …

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