miracle2k

// Extracted from https://github.com/eoscafe/eoskeyio

const ecc = require('eosjs-ecc');
const eth = require('ethereumjs-util');

let ethereumPrivateKey = 'FILL THIS IN';

if(eth.isValidPrivate(Buffer.from(ethereumPrivateKey, 'hex'))) {
	let ethereumAddress = '0x' + eth.privateToAddress(Buffer.from(ethereumPrivateKey, 'hex')).toString('hex')
	let ethereumPublicKey = eth.privateToPublic(Buffer.from(ethereumPrivateKey, 'hex')).toString('hex')

Geoff-Ford

Eric Elliott's "Composing Software" Series

A collection of links to the excellent "Composing Software" series of medium stories by Eric Elliott.

Edit: I see that each post in the series now has index, previous and next links. However, they don't follow a linear flow through all the articles with some pointing back to previous posts effectively locking you in a loop.

• The Rise and Fall and Rise of Functional Programming
• Why Learn Functional Programming in JavaScript?
• A Functional Programmer’s Introduction to JavaScript
• [Higher Order Functions](https://medium.com/javascript-scene/higher-order-functions-com

kndt84

const AWS = require('aws-sdk');
const CognitoUserPool = require('amazon-cognito-identity-js-node').CognitoUserPool;
const CognitoUserSession = require('amazon-cognito-identity-js-node').CognitoUserSession;
const CognitoUser = require('amazon-cognito-identity-js-node').CognitoUser;
const CognitoIdToken = require('amazon-cognito-identity-js-node').CognitoIdToken;
const CognitoAccessToken = require('amazon-cognito-identity-js-node').CognitoAccessToken;
const CognitoRefreshToken = require('amazon-cognito-identity-js-node').CognitoRefreshToken;

const cfg = require('config').config;
const COGNITO_IDENTITY_POOL_ID = cfg.COGNITO_IDENTITY_POOL_ID;

Boerworz

package main

import (
    "fmt"
    "log"
    "net/http"
)

func main() {
    // We need to cast handleRoot to a http.HandlerFunc since wrapHandlerWithLogging

paullewis

/**
 * An implementation for Quicksort. Doesn't
 * perform as well as the native Array.sort
 * and also runs the risk of a stack overflow
 *
 * Tests with:
 *
 * var array = [];
 * for(var i = 0; i < 20; i++) {
 *   array.push(Math.round(Math.random() * 100));

chrisroos

Every so often I have to restore my gpg keys and I'm never sure how best to do it. So, I've spent some time playing around with the various ways to export/import (backup/restore) keys.

Method 1

Backup the public and secret keyrings and trust database

cp ~/.gnupg/pubring.gpg /path/to/backups/
cp ~/.gnupg/secring.gpg /path/to/backups/
cp ~/.gnupg/trustdb.gpg /path/to/backups/

or, instead of backing up trustdb...