Faheetah

defmodule StructParser do
  import NimbleParsec

  @space 0x0020
  @tab 0x009

  whitespace = utf8_char([@space, @tab, ?\n])

  ignore_whitespace =
    lookahead(whitespace)

Faheetah

defmodule Test.Parser do
  import NimbleParsec

  # iex(9)> Test.Parser.parse """
  # ...(9)>   FOO = 1   (some foo)
  # ...(9)>   BAR = 2 (some
  # ...(9)>            bar)
  # ...(9)>   FAZ = 3 (some faz)
  # ...(9)> """
  # {:ok, ["FOO", 1, "somefoo", "BAR", 2, "somebar", "FAZ", 3, "somefaz"], "\n",

Faheetah

Generate an App

Requires phx.new, install with mix archive.install hex phx_new

mix phx.new app

Common flags:

Faheetah

A problem with repositories is sometimes you do not remember what commands you ran to bootstrap the application, or what generators were used. A history file similar to .bash_history would be handy for a per-project basis. The h command above provides a wrapper around this functionality. It should be portable across any system with bash.

Run a command and write out the command to the git project's .history file, this logs $@ to .history

$ h mix phx.new project_name
$ h mix deps.get
$ h mix ecto.create
$ cat .history
mix phx.new project_name

Faheetah

defmodule FlagStars do
  def calculate() do
    Enum.reduce(1..25, [], fn first, acc ->
      acc ++ Enum.reduce(1..25, [], fn second, acc ->
        acc ++ Enum.reduce(1..10, [], fn rows, acc ->
          acc ++ cond do
            (rows * first) == 51 -> [{first, rows}]
            ((div(rows, 2) + rem(rows, 2)) * first) + (div(rows, 2) * second) == 51 -> [{first, second, rows}]
            true -> []
          end

Faheetah

# I always get confused with decorators because of all the nesting and where all of the arguments go
# Reference of using decoratores with arguments and with classes

## Very Simple Decorator

def foo(f):
    # Inner function that must be returned
    def decorator():
        print('decorator')
        # Will be bar() from the below wrapped call

Faheetah

#!/usr/bin/env python

import json
import rethinkdb as r
from os import environ as env

HOST = env.get('RETHINK_HOST', '127.0.0.1')
PORT = env.get('RETHINK_PORT', 28015)
DB = env.get('RETHINK_DB', 'inventory')
GROUP = env.get('RETHINK_GROUP', 'dev')

Faheetah

#!/bin/bash

set -e

find_ansible_dir() {
    dir=$(readlink -f ${1:-.})

    if [ $dir = '/' ]
    then
        echo "Could not find a playbook in $(pwd)"

Faheetah

from __future__ import (absolute_import, division, print_function)
__metaclass__ = type

import sys

from ansible import constants as C
from ansible.plugins.callback.default import CallbackModule as CallbackModule_default
from ansible.utils.color import colorize, hostcolor

def _color(play):

Faheetah

contents = '''contents = {0}{0}{0}{1}{0}{0}{0}

contents = contents.format('\{0}',contents)

with open("pointless.py", "w") as f:
  f.write(contents)
'''

contents = contents.format('\'',contents)