Nicolab

Common symbols

Modifiers

When a key combination is displayed, the modifiers are written in the order presented here. For example, Control + Option + Shift + Command + Q would be written as ⌃⌥⇧⌘Q.

Sym	Key	Alt
⌃	Control
⌥	Option

Nicolab

defmodule MigrateRedis do
  require Logger

  @from [host: "127.0.0.1", port: 6379]
  @to [host: "127.0.0.1", port: 6379]

  def migrate(from \\ @from, to \\ @to) do
    {:ok, from} = Redix.start_link(from)
    {:ok, to} = Redix.start_link(to)

Nicolab

defmodule Downloader do
  @moduledoc"""
  Download streams of bytes from URLs.
  Useful to transfer large files with low RAM usage.
  
  ## Example with `ExAWS.S3.upload/3`
  
  ```elixir
  url
  |> Downloader.stream_body!()

Nicolab

defmodule App.Factory do
  alias App.Repo

  def create(module, overrides \\ %{})
  
  def create(module, overrides) when is_list(overrides), do: create(module, Map.new(overrides))
  
  def create(module, overrides) do
    attributes = module.example() |> Map.merge(overrides)
    struct(module)

Nicolab

1.1 Linux process management

• process scheduling
• interrupt handling
• signaling
• process prioritization
• process switching
• process state
• process memory

Nicolab

Eval multi-line code in stdin (terminal or SHELL script):

You can just write to crystal eval's stdin if you don't provide any arguments. Or no source argument, to be precise.

Just close stdin to eval it. Depends on you terminal, but usually Ctrl+D.

Another way:

Nicolab

#!/bin/bash
# Absolute path to this script, e.g. /home/user/bin/foo.sh
SCRIPT=$(readlink -f "$0")
# Absolute path this script is in, thus /home/user/bin
SCRIPTPATH=$(dirname "$SCRIPT")
echo $SCRIPTPATH
export $(cat ${SCRIPTPATH}/.env | xargs) 
docker-compose -f ${SCRIPTPATH}/docker-compose.yml up

Nicolab

// ----
// Sass (v3.3.4)
// Compass (v1.0.0.alpha.18)
// ----

// Capitalize string
// --------------------------------------------------------------------------------
// @param [string] $string
// --------------------------------------------------------------------------------
// @return [string]

Nicolab

/*
  Go on your labels page (https://github.com/user/repo/labels)

  Edit the following label array
  or
  Use this snippet to export github labels (https://gist.github.com/MoOx/93c2853fee760f42d97f)
  and replace it

  Paste this script in your console
  Press Enter!!

Nicolab

var promise = require('bluebird');
var fs = primise.promisifyAll(require('fs'));

function updateJson(ticker, value) {
  
  fs.readFileAsync('stocktest.json', 'utf8')
  
    .then(function(contents) {

      var stocksJson = JSON.parse(contents);