Ian Channing ianchanning

This is my attempt at converting a solution to a pascal's triangle problem that I'd written in an imperitive manner into a functional one. I kind of hope that anyone reading this is also trying to figure out the meanings behind functional programming, I'm trying to describe all the steps that I go through.

It is a mini way of me trying to discover what being 'declarative' actually means.

I know the kind of definition e.g.:

"say what you want" not "how to do it"
picture vs recipie
sqrt(2) vs looping from x = 1 finding the mean of x and 2/x
SQL, Haskell vs C++, Java

Segment Trees

Wow they seem overly complex to learn about. They're a very easy concept, but there is a paucity of resources for explaining them.

Have a gander at the resources at the bottom for the ones I came across. Took me ages to figure out the differences between them.

Here, I assume you know about Binary Trees and recursion on Binary Trees.

Any code is in python which is about as close to pseudo code as you can get.

What are the differences between segment trees, interval trees, binary indexed trees and range trees?

Stack Overflow: http://stackoverflow.com/questions/17466218/what-are-the-differences-between-segment-trees-interval-trees-binary-indexed-t/34699478

One Dimension

k is the number of reported results

	Segment	Interval	Range	Indexed
Preprocessing	n logn	n logn	n logn	n logn

	% http://www.po.gso.uri.edu/tracking/tracking/chaos/presentations/bifurcationmicroscope/
	%BifurDiag.m is a Matlab program to construct a bifurcation diagram for the logistic map
	%to allow exploring the period doubling route to Chaos. Dana Kester, Oct. 2002

	% The logistic map is x[t+1] = rx[t](1-x[t]) where 0 < r < 4 is a parameter
	% value and 0 < x[t] < 1 is a variable. The user specifies the following:
	% rmin = the lowest value of r to three decimals (or maybe two decimals)
	% rmax = the highest value of r to three decimals (or maybe two decimals)
	% xo = initial value of x[t]
	% num = number of iterations

	(function($) {
	/**
	* A general object for ticking a set of values up or down
	*
	* Each tick is done on a unit (e.g. hour / minute / second)
	* And compared against all the fractions of the unit e.g. seconds are fractions of a minte
	* Short for chained tick I think of it as 'chuck' rather than 'check', i.e. 'chuck up'
	* Also see: @link https://en.wikipedia.org/wiki/!!!
	*
	* This code was based off https://github.com/kellishaver/stopwatch but pretty much all that is left of that are the zeroPad and hand functions

	(function($) {
	jQuery.fn.chker = function() {
	var timer = $(this);
	var timerId = 0;
	var tickInterval = 1000;

	var dd = timer.find('.day');
	var hh = timer.find('.hr');
	var mm = timer.find('.min');
	var ss = timer.find('.sec');

	<!DOCTYPE html>
	<html>
	<head>
	<meta http-equiv="Content-Type" content="text/html; charset=utf-8" />
	<meta name="viewport" content="width=device-width, initial-scale=1">
	<title>chker</title>
	<link type="text/css" href="style.css" rel="stylesheet" />
	</head>
	<body>
	<div id="chker" class="chker">

	@echo off
	rem simple replacement for linux ! syntax e.g. !591
	rem usage: ! N (executes line N of history.log)
	rem @link http://ianchanning.wordpress.com/2014/10/29/dos-command-history/

	if "%1"=="" goto Syntax
	if "%1"=="/?" goto Syntax

	for /f "tokens=*" %%x in ('sed -n "%1{p;q}" %USERPROFILE%\history.log') do echo %%x & cmd /c %%x
	goto End