zhengjia

=Navigating=
    visit('/projects')
    visit(post_comments_path(post))

=Clicking links and buttons=
    click_link('id-of-link')
    click_link('Link Text')
    click_button('Save')
    click('Link Text') # Click either a link or a button
    click('Button Value')

hellerbarde

Latency numbers every programmer should know

L1 cache reference ......................... 0.5 ns
Branch mispredict ............................ 5 ns
L2 cache reference ........................... 7 ns
Mutex lock/unlock ........................... 25 ns
Main memory reference ...................... 100 ns             
Compress 1K bytes with Zippy ............. 3,000 ns  =   3 µs
Send 2K bytes over 1 Gbps network ....... 20,000 ns  =  20 µs
SSD random read ........................ 150,000 ns  = 150 µs

Read 1 MB sequentially from memory ..... 250,000 ns = 250 µs

IanVaughan

#!/usr/bin/env bash

uninstall() {
  list=`gem list --no-versions`
  for gem in $list; do
    gem uninstall $gem -aIx
  done
  gem list
  gem install bundler
}

ykessler

<select name="timezone" >
	<option disabled selected style='display:none;'>Time Zone...</option>

	<optgroup label="US (Common)">	
		<option value="America/Puerto_Rico">Puerto Rico (Atlantic)</option>
		<option value="America/New_York">New York (Eastern)</option>
		<option value="America/Chicago">Chicago (Central)</option>
		<option value="America/Denver">Denver (Mountain)</option>
		<option value="America/Phoenix">Phoenix (MST)</option>
		<option value="America/Los_Angeles">Los Angeles (Pacific)</option>

willurd

Each of these commands will run an ad hoc http static server in your current (or specified) directory, available at http://localhost:8000. Use this power wisely.

Discussion on reddit.

Python 2.x

$ python -m SimpleHTTPServer 8000

kevin-smets

Default

Powerlevel10k

charleskorn

'use strict';

var mockDelay;
var mockError;
var mockResponse = {
    status: function () {
        return 200;
    },
    ok: true,
    get: jest.genMockFunction(),

thejmazz

{
  "presets": ["es2015"],
  "plugins": ["transform-async-to-generator"]
}