Skip to content

Instantly share code, notes, and snippets.

View edwardbeckett's full-sized avatar

Edward J Beckett edwardbeckett

13 followers · 92 following
View GitHub Profile
@jboner
jboner / latency.txt
Last active May 6, 2024 07:06
Latency Numbers Every Programmer Should Know
Latency Comparison Numbers (~2012)
----------------------------------
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 3 us
Send 1K bytes over 1 Gbps network 10,000 ns 10 us
Read 4K randomly from SSD* 150,000 ns 150 us ~1GB/sec SSD
@rednaxelafx
rednaxelafx / JDK5u22_client.log
Created August 23, 2011 16:43
PrintCompilation samples running Groovy shell 1.7.7 on different versions of HotSpot VM
1 b java.lang.String::charAt (33 bytes)
2 b java.lang.Math::max (11 bytes)
3 b java.util.jar.Manifest$FastInputStream::readLine (167 bytes)
4 b sun.nio.cs.UTF_8$Decoder::decodeArrayLoop (553 bytes)
5 b java.util.Properties$LineReader::readLine (383 bytes)
6 b java.lang.String::hashCode (60 bytes)
7 b java.lang.String::indexOf (151 bytes)
8 b sun.nio.cs.ext.DoubleByteDecoder::decodeSingle (10 bytes)
9 b java.lang.String::lastIndexOf (156 bytes)
10 b java.lang.String::replace (142 bytes)
@jacrook
jacrook / font_variables.scss
Last active July 2, 2023 16:47
Sass Css Font Stack Variables
//////////////////////////////////////////////////////////////
// Font Variables (http://cssfontstack.com/)
//////////////////////////////////////////////////////////////
//
// Serif font-stacks
//
$baskerville-font-stack: "Big Caslon", "Book Antiqua", "Palatino Linotype", Georgia, serif !default;
@itavero
itavero / JAXBCollection.java
Last active March 14, 2023 10:03
Generic serializer / marshaller / unserializer / unmarshaller class to convert objects into strings and vice versa. Uses the JAXB lib. Personally used this class for converting messages received/sent to a queue (JMS).
/*
* Copyright (c) 2013, Arno Moonen <info@arnom.nl>
*
* Permission is hereby granted, free of charge, to any person
* obtaining a copy of this software and associated documentation
* files (the "Software"), to deal in the Software without
* restriction, including without limitation the rights to use, copy,
* modify, merge, publish, distribute, sublicense, and/or sell copies
* of the Software, and to permit persons to whom the Software is
* furnished to do so, subject to the following conditions:
@miglen
miglen / Apache Tomcat 8 Start stop script init.d script
Last active November 10, 2022 20:03 — forked from valotas/tomcat.sh
Apache Tomcat init script (or startup/controll script). Works fine for version 7/8. Read the comments for release history. Feel free to modify, copy and give suggestions. (c) GNU General Public License
#!/bin/bash
#
# description: Apache Tomcat init script
# processname: tomcat
# chkconfig: 234 20 80
#
#
# Copyright (C) 2014 Miglen Evlogiev
#
# This program is free software: you can redistribute it and/or modify it under
@ngocdaothanh
ngocdaothanh / gist:3764694
Created September 22, 2012 00:43
Scala Assignment: Recursion
package recfun
import scala.collection.mutable.ListBuffer
import common._
/** https://class.coursera.org/progfun-2012-001/assignment/view?assignment_id=4 */
object Main {
def main(args: Array[String]) {
println("Pascal's Triangle")
for (row <- 0 to 10) {
@marcospedreiro
marcospedreiro / font_letter_check.txt
Created May 16, 2018 04:39
/u/martinus test pattern to check how distingushable characters are for a font
From: https://www.reddit.com/r/programming/comments/8jjq33/11_best_programming_fonts/dz0xxs5/
------
o0O s5S z2Z !|l1Iij {([|})] .,;: ``''""
a@#* vVuUwW <>;^°=-~ öÖüÜäÄßµ \/\/
the quick brown fox jumps over the lazy dog
THE QUICK BROWN FOX JUMPS OVER THE LAZY DOG
0123456789 &-+@ for (int i=0; i<j; ++i) { }
@mattbaker
mattbaker / README
Created December 22, 2011 06:02
SVG to PNG render with Node and D3.js
This example expects to have d3.min.js and d3.layout.min.js in the same directory as pie.js and pie_serv.js.
Run with node pie_serv.js
@elijahmanor
elijahmanor / console.js
Created August 24, 2012 03:27
Custom JSBin Settings
jsbin.settings.editor.theme = "monokai";
jsbin.settings.editor.indentUnit = 4;
jsbin.settings.editor.smartIndent = true;
jsbin.settings.editor.tabSize = 4;
jsbin.settings.editor.indentWithTabs = true;
jsbin.settings.editor.autoClearEmptyLines = true;
jsbin.settings.editor.lineWrapping = true;
jsbin.settings.editor.lineNumbers = true;
jsbin.settings.editor.matchBrackets = true;
@nicokosi
nicokosi / progfun04
Last active November 16, 2018 01:51
My notes from Coursera course "Functional Programming Principles in Scala" (https://class.coursera.org/progfun-004).
Notes from Coursera course 'Functional Programming Principles in Scala":
https://class.coursera.org/progfun-004
✔ Week 1: Functions & Evaluations @done (14-05-01 17:20)
✔ Lecture 1.1 - Programming Paradigms (14:32) @done (14-04-27 17:54)
3 paradigms: imperative, functional, logic
OO: orthogonal
imperative: