jfs jfsurban

jfsurban / ColorUtils.java

Created June 19, 2014 02:33 — forked from alexfu/ColorUtils.java

	public class ColorUtils {
	private static final double LM_RED_COEFFICIENT = 0.2126;
	private static final double LM_GREEN_COEFFICIENT = 0.7152;
	private static final double LM_BLUE_COEFFICIENT = 0.0722;

	public static int calculateRelativeLuminance(int color) {
	int red = (int) (Color.red(color) * LM_RED_COEFFICIENT);
	int green = (int) (Color.green(color) * LM_GREEN_COEFFICIENT);
	int blue = (int) (Color.blue(color) * LM_BLUE_COEFFICIENT);
	return red + green + blue;

jfsurban / latency.txt

Created July 22, 2013 01:40 — forked from jboner/latency.txt

	Latency Comparison Numbers
	--------------------------
	L1 cache reference 0.5 ns
	Branch mispredict 5 ns
	L2 cache reference 7 ns 14x L1 cache
	Mutex lock/unlock 25 ns
	Main memory reference 100 ns 20x L2 cache, 200x L1 cache
	Compress 1K bytes with Zippy 3,000 ns
	Send 1K bytes over 1 Gbps network 10,000 ns 0.01 ms
	Read 4K randomly from SSD* 150,000 ns 0.15 ms

jfsurban / gist:4903538

Created February 13, 2013 02:31 — forked from hileon/gist:1311735

Sublime Text 2 – Useful Shortcuts (Windows)

jfsurban / gist:3185846

Created July 27, 2012 02:24 — forked from lucasfais/gist:1207002

Sublime Text 2 - Useful Shortcuts

jfsurban / tax.cs

Created September 23, 2011 04:52 — forked from flq/tax.cs

the tax thingy

	public decimal GetTaxes(decimal salary)
	{
	decimal tax = 0;

	var progressiveTaxation = new[] { 0.1m, 0.14m, 0.23m, 0.3m, 0.33m, 0.45m };
	var progressionSlices = new[] { 5070 - 0, 8660 - 5070, 14070 - 8660, 21240 - 14070, 40230 - 21240, decimal.MaxValue };

	var progression = 0;

	while (salary > 0)