calebreister’s gists

calebreister / delay.cpp

Created December 18, 2013 06:34

This is just a simple delay function I found on the internet.

	#include<stdio.h>
	#include<time.h>
	void delay(unsigned int mseconds)
	{
	clock_t goal = mseconds + clock();
	while (goal > clock());
	}
	int main()
	{
	int i;

calebreister / IOissues.cpp

Last active December 31, 2015 17:09

If an invalid operation is attempted on a stream, the stream variable will subsequently evaluate to false. This can be used to allow the programmer to detect and handle errors as follows...

	#include <fstream>
	#include <string>
	using namespace std;

	int main() {

	string fileName = "myfile.txt";
	ifstream inputData;

	//open the file, if error, bail out

calebreister / EnvironVars.py

Created December 18, 2013 06:38

Python script for accessing environment variables.

	>>> import os
	>>> os.environ.keys()
	KeysView(<os._Environ object at 0x013B8C70>)

	>>> list(os.environ.keys())
	['TMP', 'COMPUTERNAME', 'USERDOMAIN', 'PSMODULEPATH', 'COMMONPROGRAMFILES',
	...many more deleted...
	'NUMBER_OF_PROCESSORS', 'PROCESSOR_LEVEL', 'USERPROFILE', 'OS', 'PUBLIC', 'QTJAVA']

	>>> os.environ['TEMP']

calebreister / xBoxBind.cpp

Created December 18, 2013 06:46

Code for joystick bindings for xbox controller using WPILib for FRC (copied from https://github.com/bobwolff68/FRCTeam1967). "Team 1967 created a Janky Joystick Investigator that puts button and axis values on SmartDashboard. That way when you click a button or move a thumbstick you will be able to figure out which button number/axis that physic…

	#include "WPILib.h"

	/*******************************
	* RobotDemo.cpp *
	* *
	* Created on: Jan 20, 2013 *
	* Author: Team1967 *
	*******************************/

	/**********************************************************************************************

calebreister / SSHscp.sh

Created December 18, 2013 16:48

This is how you use the scp (secure copy) command to move a file to your SSH server, for instance a --bare Git repo.

	scp -P22 -r local_file username@remote_url:/remote/directory/
	#P22 is port 22, which SSH uses

calebreister / ArrayString.cpp

Last active January 3, 2016 06:09

Simple program to convert an array to a string.

	#include <iostream>
	#include <string>

	using namespace std;

	int main()
	{
	int array[2][2] =
	{ 1, 2, 3, 4 };
	string converted = "{";

calebreister / CD.cpp

Last active August 29, 2015 13:56

	#ifdef WINDOWS
	#include <direct.h>
	#define GetCurrentDir _getcwd
	#else
	#include <unistd.h>
	#define GetCurrentDir getcwd
	#endif

	int main()
	{

calebreister / GetHome.cpp

Created March 6, 2014 05:49

Simple code to get the user's home directory. With that information, it is much easier to get to a location on the hard drive such as documents or customization storage.

	#include <unistd.h>
	#include <sys/types.h>
	#include <pwd.h>
	#include <iostream>
	#include <fstream>
	using namespace std;

	int main()
	{
	int myuid;

calebreister / ConfigFile.json

Created March 9, 2014 07:10

JSON parsing example written in C++, it uses the JSON++ library (https://bitbucket.org/tunnuz/json/src). I will post my asteroids project once I have completed it and the CS-162 class.

	{
	"FRAME_RATE": 120,
	"LASER": {
	"COLOR": [
	255,
	255,
	255
	],
	"EDGE_DEATH": true,
	"PULSE_LIFE": 100

calebreister / CPP-CLI-Parameters.cc

Created March 9, 2014 07:21

Simple example of a use of argc and argv.

	#include <iostream>
	#include <fstream>

	using namespace std;

	const int WIDTH = 2000;
	const int HEIGHT = 300;
	const int COLOR = 3; //0=red, 1=green, 2=blue

	//void main(int argc, char** args[])

Caleb Reister calebreister