Calle Robertsson callerobertsson

☕

Converting coffee to code

callerobertsson / compareObjects.js

Created April 28, 2013 22:18

Javascript: Object comparision with ignored fields. Original source can be found at http://www.sencha.com/forum/showthread.php?59240-Compare-javascript-objects but without ignored fields. #snippet

	// The javascript compare objects function
	function compareObjects(o1, o2, ignoreFields){
	ignoreFields = ignoreFields \|\| [];
	//console.log('Ignore: ' + JSON.stringify(ignoreFields));
	for(var p in o1) {
	if (ignoreFields.indexOf(p) < 0) {
	if(o1[p] !== o2[p]){
	return false;
	}
	}

callerobertsson / filterFile.js

Created May 13, 2013 15:53

Javascript (NodeJS): A simple script for extracting parts in a textfile between two regex matching lines. #snippet

	// Filter File
	// a simple script for extracting parts in a textfile between two lines.
	// by Calle Robertsson, [email protected], 2013.

	var fs = require('fs');

	var filename = process.argv[2];

	if (!filename) {
	throw new Error('Missing command line argument for file name.');

callerobertsson / page-template.html

Created May 14, 2013 06:51

HTML: Page template #snippet

	<!DOCTYPE html>
	<!-- by [email protected] -->
	<html>
	<head>
	<title>TITLE</title>
	<style>
	@import url("reset.css");
	@import url("style.css");
	</style>
	<script src="http://code.jquery.com/jquery-1.9.1.min.js"></script>

callerobertsson / cans.hs

Last active August 29, 2015 14:13

Haskell: Calculates number of cans in a pyramid or sum of all cans in pyramids

	-- cans.hs

	-- Calculate number of cans in one pyramid
	cansInPyramid :: Int -> Int
	cansInPyramid 1 = 1
	cansInPyramid n = n + cansInPyramid (n - 1)

	-- Smaller solution
	cansInPyramid' n = sum [1..n]

callerobertsson / LucasCarmichaelNumbers.hs

Created January 21, 2015 13:34

Haskell: Lucas Carmichael number generator

	-- Lucas Carmichael Numbers
	--
	-- inspired by the Youtube channel Numberphile
	-- episode https://www.youtube.com/watch?v=yfr3BIk6KFc
	-- "Something special about 399 (and 2015)"
	--
	-- by [email protected], jan 2015

	import Data.Numbers.Primes

callerobertsson / hanoi.hs

Created February 22, 2015 00:42

Haskell: Tower of Hanoi

	type Peg = String
	type Move = (Peg, Peg)

	hanoi :: Integer -> Peg -> Peg -> Peg -> [Move]
	hanoi 0 _ _ _ = []
	hanoi n a b c = hanoi (n - 1) a c b ++ [(a, c)] ++ hanoi (n - 1) b a c

	main = do
	print $ hanoi 1 "a" "b" "c"
	print $ hanoi 2 "a" "b" "c"

callerobertsson / empty-string-is-a-number.js

Last active August 29, 2015 14:16

Javascript: Empty string is a number

	if (isNaN("")) {
	console.log('Empty string is not a number');
	}
	else {
	console.log('Empty string IS a number!!!');
	}

	// => Empty string IS a number!!!

callerobertsson / pad.js

Created March 13, 2015 13:03

Javascript: Pad string but don't truncate if too long

	// Javascript Pad String
	// Inspired by http://dev.enekoalonso.com/2010/07/20/little-tricks-string-padding-in-javascript/

	function pad(filling, value) {
	if (('' + value).length > filling.length) {
	return value;
	}
	return (filling + value).slice(-1 * filling.length);
	}

callerobertsson / downcast.cs

Last active August 19, 2016 08:48

C#: True down cast from child to parent using JSON

	using System;
	using System.Collections.Generic;
	using System.Linq;
	using Newtonsoft.Json;

	namespace DownCaster
	{
	static class Program
	{
	static void Main()

callerobertsson / wc.hs

Last active February 16, 2017 08:31

Haskell: Simple wc command (no options)