NickKelly1

Introduction

Docker enables you to separate your applications from your infrastructure to deliver software quickly. It provides the ability to distribute inexpensive environments cross platform with ease.

Windows 10 Home Edition

To use Docker on Windows 10 Home Edition, Docker Toolbox must be used to manage the Docker environment.

The Docker Environment consists of docker, docker-compose, and docker-machine.

NickKelly1

Common

• Bash Commands
  • whoami
  • uname (-a)
    • Show system and kernel
  • mount
    • Show mounted filesystems
  • date
• uptime

NickKelly1

sed "s///<g for global, empty for first line entry>" app.js

Basics

• sed "s/replaceme/REPLACEMENT/g>"
• Removing an entrty: sed "s/REMOVEME//g"
• Removing // comments: sed "s///.*//g"

File editing

• "Sed is a stream editor by default"
• To modify a file, use -i flag

NickKelly1

  "devDependencies": {
    "ts-node": "^8.1.0",
    "typescript": "^3.4.5"
  },
  "scripts": {
    "start:ts": "ts-node main2.ts",
    "start:ts:debug": "node -r ts-node/register --inspect-brk main2.ts"
  }

NickKelly1

es6 - http://exploringjs.com/es6/

• for-of
  • Replaces for-in
  • Supports new iteration protocol (Symbol.iterator)
  • JavaScript for (const x of iterable) {...]
  • JavaScript for (const [key, value] of Object.entries(obj)) {...}
  • "break and continue work inside for-of loops"
  • Pros
    • Normal for loops: break/continue; usable in generators

NickKelly1

# TS Union to KV

```ts
type Tagged =
  | { _t: 'a', val: 'first'}
  | { _t: 'b', val: 'second'}
  | { _t: 'c', val: 'third'};

type A = Tagged['_t'];
type B = {[K in Tagged['_t']]: Extract<Tagged, { _t: K }>}

NickKelly1

fragment PageInfoFragment on PageInfo{ page pages count total more }

# Find many Accounts
query FindAccounts {
  accounts(query:{limit:2 offset:0 sorts:[ { field:"id", dir: Asc } ]}){
    # collection of (first 2) accounts (sorted by id)
    pageInfo { ...PageInfoFragment }
    can { show create }
    nodes {
      # an account

NickKelly1

HTTP/1.1 200 OK
Content-Type: application/vnd.acme.account+json
Content-Length: ...

{
    "account": {
        "account_number": 12345,
        "balance": {
            "currency": "usd",
            "value": 100.00

NickKelly1

  # AccountNode fields:

  # type: AccountActions
  can { show withdraw deposit }

  # type: AccountData
  data { id name balance }

  # type: AccountRelations
  relations {

NickKelly1

# AccountNode fields:

  # authorisation
  canShow

  # authorisation
  canWithdraw

  # authorisation
  canDeposit