craigp

/*
Replace "your_schema" with whatever schema is appropriate in your environment.
It is possible to use "public"... but you shouldn't!
*/


/*
Function to stamp a "modified" timestamp. Adjust the name to suit your environment,
but that name is hard-coded so it is assumed that you only use _one_ such name.

craigp

This notes is written by Sheldon. You can find me with #iOSBySheldon in Github, Youtube, Facebook, etc.

Need

Convert .mov/.MP4 to .gif

Reason

As a developer, I feel better to upload a short video when I create the pull request to show other viewers what I did in this PR. I tried .mov format directly got after finishing recording screen using Quicktime, however, gif offers preview in most web pages, and has smaller file size.

This is not limited to developer, anyone has this need can use this method to convert the files.

craigp

sns.publish({
  TargetArn: device.arn,
  MessageStructure: 'json',
  Message: JSON.stringify({
    default: 'you will never see this muah!',
    APNS_SANDBOX: JSON.stringify({
      aps: {
        'alert': '',
        'content-available': 1
      },

craigp

#!/bin/bash

ask() {
  # https://djm.me/ask
  local prompt default reply

  while true; do

    if [ "${2:-}" = "Y" ]; then
      prompt="Y/n"

craigp

#!/usr/bin/env bash
#
# Usage:
#     transcode filename [filename...]
#
# File type is determined using:
#
#   file --mime-type filename
#
# Audio files:

craigp

env = case System.get_env("MIX_ENV") || "dev" do
  "prod" -> IO.ANSI.red() <> "prod" <> IO.ANSI.reset()
  "dev" -> IO.ANSI.green() <> "dev" <> IO.ANSI.reset()
  "test" -> IO.ANSI.green() <> "test" <> IO.ANSI.reset()
  mix_env -> IO.ANSI.yellow() <> mix_env <> IO.ANSI.reset()
end

IEx.configure(
  default_prompt: "%prefix(#{env},%counter)>",
  alive_prompt: "%prefix(#{env},%node,%counter)>"

craigp

$./bin/my_app rpc Elixir.Application app_dir "[my_app, <<\"/priv/repo/migrations\">>]."
<<"/home/dashboard/uss/lib/my_app-0.0.1/priv/repo/migrations">>


./bin/my_app rpc Elixir.Ecto.Migrator run "['Elixir.MyApp.Repo', <<\"/home/dashboard/uss/lib/my_app-0.0.1/priv/repo/migrations\">>, up, [{all, true}]]."
# => []

craigp

# Elixir has lazily evaluated enumerable objects that allow you
# to work with enumerable objects like lists either only as needed
# or infinitely.

# Start up iex to play around
$ iex

# Typical enumeration is done eagerly where the result is computed ASAP
iex> Enum.map(1..10, fn i -> i * 2 end)
[2, 4, 6, 8, 10, 12, 14, 16, 18, 20]

craigp

TIL how to make deprecation warnings:

Compiling 2 files (.ex)
warning: `Retort.Resources.timeout/2` is deprecated; call `Retort.Resources.Timeout.get_or_default/2` instead.
  lib/retort/resources.ex:197: Retort.Resources.timeout/2

Replace function

craigp

defmodule Quicksort do

  def sort([]), do: []

  def sort([head|tail]) do
    {low, high} = Enum.partition(tail, &(&1 < head))
    sort(low) ++ [head] ++ sort(high)
  end

end