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EyalAr / gist:3018471
Created Jun 29, 2012
An explanation + examples about Java generics and bounded wildcards.
View gist:3018471
* Java Generics, Wildcards and Bounded Wildcards.
* ...Can be confusing. Here's a small explanation + examples.
import java.util.LinkedList;
import java.util.List;
EyalAr / registerS3ProtocolStreamWrapper.php
Last active Jan 29, 2019
Registering and using S3 protocol with AWS S3 stream wrapper for PHP
View registerS3ProtocolStreamWrapper.php
$s3 = new AmazonS3(array(
'key' => AWS_KEY,
EyalAr / hello_world_opencv.cpp
Created Oct 23, 2012
Hello World in OpenCV
View hello_world_opencv.cpp
#include "opencv2/opencv.hpp"
#include "opencv2/highgui/highgui.hpp"
using namespace cv;
int main(int argc, char** argv) {
//create a gui window:
EyalAr / ExtractEigenfaces.m
Last active Aug 17, 2017
Matlab script which extracts to files the eigenfaces of a set of face images.
View ExtractEigenfaces.m
% Extract the eigen-faces of a set of face images.
start_index = 1;
end_index = 10;
base_name = '';
extension = '.jpg';
in_dir = 'in';
out_dir = 'ef';
images = [];
EyalAr / InitPersonRecognizer.cpp
Last active Dec 1, 2016
Code snippets for my OpenCV face recognition tutorial, in which I show how to build an application which recognizes a specific person in a video. Full code at:
View InitPersonRecognizer.cpp
#define PERSON_LABEL = 10 //some arbitrary label
//LBPH face recognizer parameters:
#define RADIUS 1
#define NEIGHBORS 8
#define GRID_X 8
#define GRID_Y 8
#define THRESHOLD 130.0
//create a LBPH face recognizer model:
EyalAr / CsvWriter.hpp
Last active Dec 15, 2015
Code samples for my face detection and recognition with OpenCV tutorial.
View CsvWriter.hpp
class CsvWriter {
CsvWriter(const string &csvPath);
virtual ~CsvWriter();
void nextLine();
void addEntry(const string &s);
ofstream _fs;
bool _isFirstEntry;
EyalAr /
Created Dec 11, 2013
Demo code for my post about python's blocking stream reading functions.
from subprocess import Popen, PIPE
from time import sleep
# run the shell as a subprocess:
p = Popen(['python', ''],
stdin = PIPE, stdout = PIPE, stderr = PIPE, shell = False)
# issue command:
# let the shell output the result:
EyalAr /
Last active Jan 27, 2020
Count words in selection - plugin for Sublime Text 3. Full blog post:
import sublime, sublime_plugin, re
class CountWordsInSelectionCommand(sublime_plugin.EventListener):
def on_selection_modified(self, view):
listen to event 'on_selection_modified' and count words in all selected
regions when invoked.
EyalAr / 1.generator_example.js
Created May 9, 2014
Code snippets for Javascript generators and asynchronous code presentation. Based on
View 1.generator_example.js
// generate a series of even numbers,
// but be able to to reverse the order of iteration
function * generateEvens(start) {
var dir = 1; // up
if (start % 2 !== 0) start++;
while (true) {
var tmp = yield start;
if (tmp === 'up') dir = 1;
if (tmp === 'down') dir = -1;
EyalAr /
Last active Jun 3, 2020
Shell script to easily export mongo collections into JSON files
#!/usr/bin/env bash
if [ -n "$1" -a "$1" = "--help" ]
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