yrps’s gists

yrps / MPAE_04_17.m

Created January 3, 2016 01:20

"MATLAB Programming with Applications for Engineers" exercises from 2014

	%{
	"MATLAB Programming with Applications for Engineers", Stephen Chapman, 2013
	Chapter 4: Branching Statements and Program Design; Exercise 17

	Purpose:
	- For a ray or light passing between two regions, calculate the angle of
	incidence into the second region given the indices of refraction.
	- Properly handle cases where no light is refracted into the second region.
	- Plot the incident ray, the boundary, and the refracted ray.

yrps / TOCmaker.html

Created January 3, 2016 01:24

generate a table of contents index from a collection of scraped html pages

	<!DOCTYPE html>
	<html>
	<head lang="en">
	<meta charset="UTF-8">
	<title>TOC maker</title>

	<style type="text/css">
	body {
	font-family: sans-serif;
	background-color: lightgreen;

yrps / diag.php

Created January 3, 2016 01:27

some simple $_SERVER diagnostics

	<?php

	function dumpSERVER() {
	$ary = $_SERVER;
	echo "<hr>\n<h3>\$_SERVER: ".count($ary)."-entry array</h3>";
	echo "<dl>\n";
	foreach (array_keys($ary) as $key) {
	echo "<dt>$key</dt>";
	echo "<dd>$ary[$key]</dd>";
	}

yrps / listTest.py

Created January 3, 2016 01:30

poking lists in Python (2014)

yrps / Arrays.rb

Created January 3, 2016 02:06

exploring the Enumerable API in Ruby (2014)

	# Experiments with the Array library, including the Enumerable mixins

	################################################################################
	# initialization

	# Array.[] denotes array literally, or can be used as factory method
	[-2, 'a string', __FILE__] # => [-2, "a string", "(irb)"]
	Array.[](-2, 'a string', __FILE__) # => [-2, "a string", "(irb)"]

	# empty

yrps / ContainerDemo.java

Created January 3, 2016 02:10

anonymous Components in Swing can be recovered with getComponents (2014)

	import javax.swing.*;
	import java.awt.*;

	/**
	* Class to demonstrate creation and manipulation of a Container's anonymous Components.
	* We can use methods like getComponent, getComponents, getComponentCount and getContentPane to
	* extract components that have been added to a container.
	*/
	public class ContainerDemo extends JApplet {
	/**

yrps / stats.c

Created January 3, 2016 02:37

simple statistics package in vanilla C (2014)

	#include <stdio.h>
	#include <stdlib.h>
	#include <libgen.h> // basename
	#include <math.h> // sqrt

	double get_sum(const double vals[], const size_t n);
	double get_mean(const double sum, const size_t n);
	double get_median(const double sorted[], const size_t n);
	double get_mode(const double sorted[], const size_t n, int* has_mode);
	double get_variance(const double vals[], const size_t n, const double mean);

yrps / linkedList.c

Created January 3, 2016 02:39

linked list implementation in vanilla C (2014)

	#include <stdio.h>
	#include <stdlib.h>

	// define a struct for a single node: two data fields and a next pointer
	struct listNode {
	int number;
	char *name;
	struct listNode *next;
	};

yrps / m3u8_to_m3u.sh

Created January 23, 2016 00:43

m3u8 to m3u

	#!/bin/sh

	# convert all m3u8 playlists (UTF-8 encoding) in current dir to m3u (ASCII)
	# required for compatibility with some media players
	for pl in *.m3u8
	do iconv -f UTF-8 -t ASCII//TRANSLIT "$pl" > "${pl%\.m3u8}.m3u"
	echo "converted $pl"
	done

yrps / favicon.sh

Last active February 15, 2016 18:28

use ImageMagick to convert the given image to a favicon

	#!/bin/sh
	# use ImageMagick to convert the given image to a favicon
	# http://www.imagemagick.org/Usage/thumbnails/#favicon

	usage() {
	>&2 echo "usage: $(basename "$0") input [output]"
	}
	set -eu
	input="${1:-}"
	output="${2:=favicon}"