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James Morgan jamesmorgan

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@alexvandesande
alexvandesande / Random generator
Last active December 23, 2022 09:10
A very simple random generator. A miner can influence the number by not publishing a block with an unwanted outcome, and forfeiting the 5 block reward.
contract random {
/* Generates a random number from 0 to 100 based on the last block hash */
function randomGen(uint seed) constant returns (uint randomNumber) {
return(uint(sha3(block.blockhash(block.number-1), seed ))%100);
}
/* generates a number from 0 to 2^n based on the last n blocks */
function multiBlockRandomGen(uint seed, uint size) constant returns (uint randomNumber) {
uint n = 0;
for (uint i = 0; i < size; i++){
@staltz
staltz / migration-guide.md
Last active December 19, 2023 22:14
How to show migration guides in GitHub Markdown

How to show migration guides in GitHub Markdown

Use the diff code highlighting tag.

  ```diff
  - foo
  + bar

Example:

@andyyou
andyyou / iterm2-solarized.md
Created September 30, 2015 13:58 — forked from kevin-smets/iterm2-solarized.md
iTerm2 + oh my zsh + solarized + Meslo powerline font (OSX)

Solarized

@beaugunderson
beaugunderson / cool-modules.md
Last active February 2, 2023 19:58
cool modules from nodeconf

from streams session

  • end-of-stream - specify a callback to be called when a stream ends (which is surpsingly hard to get right)
  • duplexify - compose a Duplex stream from a Readable and a Writable stream
  • pump - pipe streams together and close all of them if one of them closes
  • pumpify - combine an array of streams into a single duplex stream using pump and duplexify
  • through2 - tools for making Transform streams
  • from2 - tools for making Readable streams

from "participatory modules" session

@katowulf
katowulf / normalize_record.js
Last active January 5, 2018 00:08
Normalize a "post" record by adding "user" data from another Firebase path in AngularFire
app.factory('NormalizedPosts', function($firebaseArray, userCache) {
var PostsWithUsers = $firebaseArray.$extend({
// override $$added to include users
$$added: function(snap) {
// call the super method
var record = $firebaseArray.prototype.$$added.call(this, snap);
userCache.$load( record.user ).$loaded(function( userData ) {
record.userData = userData;
});
@addyosmani
addyosmani / package.json
Last active January 18, 2024 21:31
npm run-scripts boilerplate
{
"name": "my-app",
"version": "1.0.0",
"description": "My test app",
"main": "src/js/index.js",
"scripts": {
"jshint:dist": "jshint src/js/*.js",
"jshint": "npm run jshint:dist",
"jscs": "jscs src/*.js",
"browserify": "browserify -s Validating -o ./dist/js/build.js ./lib/index.js",
@pgilad
pgilad / Instructions.md
Last active March 31, 2024 22:30
Git commit-msg hook to validate for jira issue or the word merge

Instructions

  • copy the file commit-msg to .git/hooks/commit-msg
  • make sure your delete the sample file .git/hooks/commit-msg.sample
  • Make commit msg executable. chmod +x .git/hooks/commit-msg
  • Edit commit-msg to better fit your development branch, commit regex and error message
  • Profit $$

Shell example

@gboudreau
gboudreau / install-ffmpeg-amazon-linux.sh
Last active November 21, 2023 19:48
How to compile ffmpeg on Amazon Linux (EC2)
#!/bin/sh
# Based on instructions found here: http://wiki.razuna.com/display/ecp/FFMpeg+Installation+on+CentOS+and+RedHat#FFMpegInstallationonCentOSandRedHat-InstallX264
if [ "`/usr/bin/whoami`" != "root" ]; then
echo "You need to execute this script as root."
exit 1
fi
cat > /etc/yum.repos.d/centos.repo<<EOF
@staltz
staltz / introrx.md
Last active May 6, 2024 01:44
The introduction to Reactive Programming you've been missing
@evanscottgray
evanscottgray / docker_kill.sh
Last active November 7, 2023 03:40
kill all docker containers at once...
docker ps | awk {' print $1 '} | tail -n+2 > tmp.txt; for line in $(cat tmp.txt); do docker kill $line; done; rm tmp.txt