alessandrostone

#!/bin/sh

echo " ██████  ██████  ███████ ██     ██     ██   ██ ███████  ██████  ███████""
echo " ██   ██ ██   ██ ██      ██     ██     ██  ██  ██      ██       ██""
echo " ██████  ██████  █████   ██  █  ██     █████   █████   ██   ███ ███████""
echo " ██   ██ ██   ██ ██      ██ ███ ██     ██  ██  ██      ██    ██      ██""
echo " ██████  ██   ██ ███████  ███ ███      ██   ██ ███████  ██████  ███████""
echo ""
echo ""
echo " ███    ███ ███████  ██████   █████  ███████ ██ ██   ██""

amysimmons

#Understanding closures, callbacks and promises

For a code newbie like myself, callbacks, closures and promises are scary JavaScript concepts.

10 months into my full-time dev career, and I would struggle to explain these words to a peer.

So I decided it was time to face my fears, and try to get my head around each concept.

Here are the notes from my initial reading. I'll continue to refine them as my understanding improves.

ericdke

extension String {
    func extractURLs() -> [NSURL] {
        var urls : [NSURL] = []
        do {
            let detector = try NSDataDetector(types: NSTextCheckingType.Link.rawValue)
            detector.enumerateMatchesInString(self,
                options: [],
                range: NSMakeRange(0, text.characters.count),
                usingBlock: { (result, _, _) in
                    if let match = result, url = match.URL {

rounak

<key>NSAppTransportSecurity</key>
<dict>
	<key>NSAllowsArbitraryLoads</key>
	<true/>
</dict>

zelig

wget http://developer.download.nvidia.com/compute/cuda/7_0/Prod/local_installers/cuda_7.0.29_mac.pkg
sudo installer -pkg cuda_7.0.29_mac.pkg -target /
// once cpp-ethereum 0.9.23 is released on homebrew you do not need to build from source
brew update
brew tap ethereum/ethereum
brew reinstall cpp-ethereum --with-gpu-mining --devel --build-from-source
// or build from source:
// cd cpp-ethereum
// cmake -DETHASHCL=1 -DGUI=0
// make -j8

JadenGeller

struct Random {
    static func within<B: protocol<Comparable, ForwardIndexType>>(range: ClosedInterval<B>) -> B {
    	let inclusiveDistance = range.start.distanceTo(range.end).successor()
    	let randomAdvance = B.Distance(arc4random_uniform(UInt32(inclusiveDistance.toIntMax())).toIntMax())
    	return range.start.advancedBy(randomAdvance)
    }
    
    static func within(range: ClosedInterval<Float>) -> Float {
        return (range.end - range.start) * Float(Float(arc4random()) / Float(UInt32.max)) + range.start
    }

setup_kiosk.sh

#!/bin/bash

# This script
# - creates a user (named below)
# - sets up a union (aufs) filesystem on top of the users immutable home
# - creates a cleanup script (/usr/local/bin/cleanup.sh) that empties the aufs
#   layer on login/logout/boot
# - replaces the lightdm config
# - replaces rc.local to run the script
#

MorikoHandford

#!/bin/bash

# WARNING
#   This expects your repository to be in ~/git .  If your repository is elsewhere you will need to alter the script.  

# SYNOPSIS
#   git_cleanup [repo name] [-xl]

# DESCRIPTION
#   This script allows people to delete (-x) the history of a directory OR destroy (-l) the history of a directory and just

blixt

Testing RNGs with Dieharder

This guide is specifically for pseudo-random number generators (PRNGs) written in JavaScript, and tested in Mac OS X.

Prerequisites

Homebrew

thejollyrogers

You can become your own gateway in two simple steps! Here we'll show how easy it is to issue your own currency on the Stellar network.

Extending trust & issuing credit

1: A user extends trust to your gateway account for a "maximum" amount of your currency. Remember, they're trusting you'll honor whatever your currency represents when they give it back to you.

$ curl -X POST https://test.stellar.org:9002  -d '
{
    "method": "submit",