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@pazdera
pazdera / gist:1098119
Created July 21, 2011 20:25
Singleton example in C++
/*
* Example of a singleton design pattern.
* Copyright (C) 2011 Radek Pazdera
* This program is free software: you can redistribute it and/or modify
* it under the terms of the GNU General Public License as published by
* the Free Software Foundation, either version 3 of the License, or
* (at your option) any later version.
* This program is distributed in the hope that it will be useful,
@mcleonard
mcleonard / vector.py
Last active February 22, 2024 12:30
A vector class in pure python.
import math
class Vector(object):
def __init__(self, *args):
""" Create a vector, example: v = Vector(1,2) """
if len(args)==0: self.values = (0,0)
else: self.values = args
def norm(self):
""" Returns the norm (length, magnitude) of the vector """
@rxaviers
rxaviers / gist:7360908
Last active June 21, 2024 19:08
Complete list of github markdown emoji markup

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git config --global https.proxy http://127.0.0.1:1080
git config --global https.proxy https://127.0.0.1:1080
git config --global --unset http.proxy
git config --global --unset https.proxy
npm config delete proxy
@royshil
royshil / SimpleAdHocTracker.cpp
Created March 15, 2015 18:21
Ad-Hoc AR tracker from a planar scene without need for markers
/*
* SimpleAdHocTracker.cpp
*
* Created on: Mar 15, 2015
* Author: roy_shilkrot
*
* The MIT License (MIT)
*
* Copyright (c) 2015 Roy Shilkrot
*
@RDCH106
RDCH106 / OpenCV_Mouse_Event_Handler.cpp
Last active June 19, 2020 12:16
OpenCV Mouse Event Handler
#include "opencv2/opencv.hpp"
#include <iostream>
using namespace cv;
using namespace std;
Mat frame;
void mouseEventHandler(int event, int x, int y, int flags, void* param)
{
@squarism
squarism / iterm2.md
Last active June 18, 2024 19:42
An iTerm2 Cheatsheet

Tabs and Windows

Function Shortcut
New Tab + T
Close Tab or Window + W (same as many mac apps)
Go to Tab + Number Key (ie: ⌘2 is 2nd tab)
Go to Split Pane by Direction + Option + Arrow Key
Cycle iTerm Windows + backtick (true of all mac apps and works with desktops/mission control)
@gocarlos
gocarlos / Eigen Cheat sheet
Last active May 31, 2024 18:30
Cheat sheet for the linear algebra library Eigen: http://eigen.tuxfamily.org/
// A simple quickref for Eigen. Add anything that's missing.
// Main author: Keir Mierle
#include <Eigen/Dense>
Matrix<double, 3, 3> A; // Fixed rows and cols. Same as Matrix3d.
Matrix<double, 3, Dynamic> B; // Fixed rows, dynamic cols.
Matrix<double, Dynamic, Dynamic> C; // Full dynamic. Same as MatrixXd.
Matrix<double, 3, 3, RowMajor> E; // Row major; default is column-major.
Matrix3f P, Q, R; // 3x3 float matrix.
@omaraflak
omaraflak / main.cpp
Last active March 23, 2024 14:44
Image convolution in C++ + Gaussian blur
#include <iostream>
#include <vector>
#include <assert.h>
#include <cmath>
#include <png++/png.hpp>
using namespace std;
typedef vector<double> Array;
typedef vector<Array> Matrix;
@marten-voorberg
marten-voorberg / Vector3.py
Last active October 5, 2020 19:09
Vector3 Class Python
import math
class Vector3:
def __init__(self, x, y, z):
self.x = x
self.y = y
self.z = z
# Used for debugging. This method is called when you print an instance
def __str__(self):