hiiamyes

CSS

1. What is CSS BEM?

Haven't used BEM before, but as I know, it's a class name naming convension, for better managing css code.

2. What is the difference between em and rem units?

• em: Representing relative font-size, relative to parent element.
• rem: root em, representing relative font-size, but only relative to root element (``).

hiiamyes

Migrations and testing for PostgreSQL using node.js and Travis-CI

We're looking to add a column to the table user called admin (boolean) in an existing database.

Project layout

migrations

hiiamyes

{
  "name": "nightwatch_webcrawler",
  "description": "A web crawler sample based on nightwatch.",
  "version": "0.0.1",
  "author": {
    "name": "tonypai",
    "email": "[email protected]"
  },
  "homepage": "http://github.com/tpai",
  "dependencies": {

hiiamyes

FROM ubuntu:16.04

RUN apt-get update && apt-get install -y --no-install-recommends \
    ca-certificates \
    apt-transport-https \
    openjdk-8-jre-headless \
    curl \
    xz-utils \
    unzip \
    bzip2 \

hiiamyes

Use these rapid keyboard shortcuts to control the GitHub Atom text editor on Mac OSX.

Key to the Keys

• ⌘ : Command key
• ⌃ : Control key
• ⌫ : Delete key
• ← : Left arrow key
• → : Right arrow key
• ↑ : Up arrow key