jeremysears

Gremlin Cheat Sheet in Groovy

Gremin traversal examples taken from the excellent DS330: DataStax Enterprise Graph course.

Creating Vertices and Vertex Properties

Add a Vertex

Vertex u = graph.addVertex("user");
       u.property("userId","u2016");
 u.property("age",36);

bradwestfall

S3 Static Sites

⚠ This post is fairly old. I don't keep it up to date. Be sure to see comments where some people have posted updates

What this will cover

• Host a static website at S3
• Redirect www.website.com to website.com
• Website can be an SPA (requiring all requests to return index.html)
• Free AWS SSL certs
• Deployment with CDN invalidation

Jonalogy

Handling Multiple Github Accounts on MacOS

The only way I've succeeded so far is to employ SSH.

Assuming you are new to this like me, first I'd like to share with you that your Mac has a SSH config file in a .ssh directory. The config file is where you draw relations of your SSH keys to each GitHub (or Bitbucket) account, and all your SSH keys generated are saved into .ssh directory by default. You can navigate to it by running cd ~/.ssh within your terminal, open the config file with any editor, and it should look something like this:

Host *
 AddKeysToAgent yes

> UseKeyChain yes

joshbuchea

Semantic Commit Messages

See how a minor change to your commit message style can make you a better programmer.

Format: <type>(<scope>): <subject>

<scope> is optional

Example

akirattii

var express = require('express');
var app = express();

// response header for sever-sent events
const SSE_RESPONSE_HEADER = {
  'Connection': 'keep-alive',
  'Content-Type': 'text/event-stream',
  'Cache-Control': 'no-cache',
  'X-Accel-Buffering': 'no'
};

odigity

    There is no way to store an empty object/array/null value.
    There are also no actual arrays.  Array values get stored as objects with integer keys.
        (If all keys are integers, it will be returned as an array.)

    Basically, it's one giant tree of hashes with string keys.
    Simply write a value to any location, and the intermediary locations will automatically come into existance.

 ── Classes ──

    DataSnapshot  : Container for a subtree of data at a particular location.

stekhn

function weightedMean(arrValues, arrWeights) {

  var result = arrValues.map(function (value, i) {

    var weight = arrWeights[i];
    var sum = value * weight;

    return [sum, weight];
  }).reduce(function (p, c) {

parmentf

Inspired by dannyfritz/commit-message-emoji

See also gitmoji.

Commit type	Emoji
Initial commit	🎉 :tada:
Version tag	🔖 :bookmark:
New feature	✨ :sparkles:
Bugfix	🐛 :bug:

vybstat

# remove .DS_Store file from GitHub that MAC OS X creates

# find and remove .DS_Store
find . -name .DS_Store -print0 | xargs -0 git rm -f --ignore-unmatch

# create .gitignore file, if needed
touch .gitignore
echo .DS_Store > .gitignore

# push changes to GitHub

johnpolacek

[alias]
        recent = "!git for-each-ref --sort=-committerdate refs/heads/ --format='%(committerdate:short) %(refname:short)' | head -n 10"
	co = checkout
	cob = checkout -b
	coo = !git fetch && git checkout
	br = branch
	brd = branch -d
	brD = branch -D
	merged = branch --merged
	st = status