nakov

let elliptic = require('elliptic');
let sha3 = require('js-sha3');
let ec = new elliptic.ec('secp256k1');

// let keyPair = ec.genKeyPair();
let keyPair = ec.keyFromPrivate("97ddae0f3a25b92268175400149d65d6887b9cefaf28ea2c078e05cdc15a3c0a");
let privKey = keyPair.getPrivate("hex");
let pubKey = keyPair.getPublic();
console.log(`Private key: ${privKey}`);
console.log("Public key :", pubKey.encode("hex").substr(2));

jlafon

An introduction to DynamoDB

DynamoDB is a powerful, fully managed, low latency, NoSQL database service provided by Amazon. DynamoDB allows you to pay for dedicated throughput, with predictable performance for "any level of request traffic". Scalability is handled for you, and data is replicated across multiple availability zones automatically. Amazon handles all of the pain points associated with managing a distributed datastore for you, including replication, load balancing, provisioning, and backups. All that is left is for you to take your data, and its access patterns, and make it work in the denormalized world of NoSQL.

Modeling your data

The single most important part of using DynamoDB begins before you ever put data into it: designing the table(s) and keys. Keys (Amazon calls them primary keys) can be composed of one attribute, called a hash key, or a compound key called the hash and range key. The key is used to uniquely identify an item in a table. The choice of the primary key is particularl

v-yarotsky

### INSTALLATION NOTES ###
# 1. Install Homebrew (https://github.com/mxcl/homebrew)
# 2. brew install zsh
# 3. Install OhMyZsh (https://github.com/robbyrussell/oh-my-zsh)
# 4. brew install reattach-to-user-namespace --wrap-pbcopy-pbpaste && brew link reattach-to-user-namespace
# 5. Install iTerm2
# 6. In iTerm2 preferences for your profile set:
#      Character Encoding: Unicode (UTF-8)
#      Report Terminal Type: xterm-256color
# 7. Put itunesartist and itunestrack into PATH

buildmotion

Server Application Setup

• Server Application Setup
  • Tools
  • Create Applications
    • Proxy Configuration
  • Nest Application
  • Build, Test, Serve Application
    • HTTP
• Going Serverless

pandafulmanda

Python3 Virtualenv Setup

Requirements

• Python 3
• Pip 3

$ brew install python3

rjz

const buffer = require('buffer');
const crypto = require('crypto');

// Demo implementation of using `aes-256-gcm` with node.js's `crypto` lib.
const aes256gcm = (key) => {
  const ALGO = 'aes-256-gcm';

  // encrypt returns base64-encoded ciphertext
  const encrypt = (str) => {
    // The `iv` for a given key must be globally unique to prevent

celso

syntax on
set ruler               " Show the line and column numbers of the cursor.
set formatoptions+=o    " Continue comment marker in new lines.
set textwidth=0         " Hard-wrap long lines as you type them.
set modeline            " Enable modeline.
set esckeys             " Cursor keys in insert mode.
set linespace=0         " Set line-spacing to minimum.
set nojoinspaces        " Prevents inserting two spaces after punctuation on a join (J)
" More natural splits
set splitbelow          " Horizontal split below current.

marty-wang

Disclaimer: The instructions are the collective efforts from a few places online. 
Nothing here is my original. But I want to put them together in one place to save people from spending the same time as I did.

First off, bundle.
==================

1. cd to the project directory
2. Start the react-native packager if not started
3. Download the bundle to the asset folder:
curl "http://localhost:8081/index.android.bundle?platform=android" -o "android/app/src/main/assets/index.android.bundle"

devunwired

/**
 * Copyright (c) 2013 Xcellent Creations, Inc.
 *
 * 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:

rocketraman

[alias]
	# Basically `log --oneline --decorate --graph` with different colors and some additional info (author and date)
	lg = log --graph --abbrev-commit --decorate --format=format:'%C(yellow)%h%C(reset) %C(normal)%s%C(reset) %C(dim white)%an%C(reset) %C(dim blue)(%ar)%C(reset) %C(dim black)%d%C(reset)'

	# lg (see above) with --first-parent
	lgp = log --graph --abbrev-commit --decorate --format=format:'%C(yellow)%h%C(reset) %C(normal)%s%C(reset) %C(dim white)%an%C(reset) %C(dim blue)(%ar)%C(reset) %C(dim black)%d%C(reset)' --first-parent

	# https://stackoverflow.com/questions/61510067/show-specific-commits-in-git-log-in-context-of-other-commits
	hl = "!f() { cd -- ${GIT_PREFIX:-.}; grep --color -E \"$(git log --pretty=%h \"$@\" | tr '\n' '|')\" || true; }; f"
	hlp = "!f() { cd -- ${GIT_PREFIX:-.}; less -R -p $(git log --pretty=%h \"$@\" | tr '\n' '|'); }; f"