expede

#test for editing
#setup on the command line
gem install rspec
rspec --init

#add to gemfile:
group :test, :development do
  gem 'rspec-rails'
end

expede

# Similar to a squashed rebase
# Merges branch A into B, and then resets the branch to A,
#   producing an unstaged diff of B for your commit
# exampe usage: `debase master`
#   (note the lack of `git` prefix)
function debase() {
    if [[ -z $1 ]]; then
	echo 'missing branch to debase from'
    else
	branch=${1}

expede

### Keybase proof

I hereby claim:

  * I am expede on github.
  * I am expede (https://keybase.io/expede) on keybase.
  * I have a public key whose fingerprint is F233 CD9A 63AE 700A 7BD2  451A FB83 8D90 B29C 377A

To claim this, I am signing this object:

expede

(defvar expede-packages
  '(
    cucumber-goto-step
    ac-haskell-process
    ac-html
    ac-helm
    ac-octave
    brainfuck-mode
    coffee-mode
    helm-robe

expede

{:error, "Something went boom"}
{:error, "Something went boom", %{original :data}}
{:error, %{original: :data}}

# Yes, this exists in the wild
{:ok, %{error: %{reason: "something went boom", data: %{original: :data}}}} 

expede

use Exceptional

OtherFile.read("./existing_file.txt") ~> String.length
# 19

OtherFile.read("./missing.file") ~> String.length
# %OtherFile.NotFoundError{
#   message: "File not found at ./missing.file",
#   path: "./missing.file"
# }

expede

search_result = find_book(title: title)
case search_result do
  page = %Page{} -> render(page)
  %Ecto.MultipleResultsError{} when is_series(title) ->
    %Book.SeriesAreNotBooksError{
      message: "#{title} is a series, not a book.",
      title: title,
      series: search_result,
      plug_status: 422
    }

expede

# =====================
# Explicit branch names
# =====================

branch OtherFile.read("./existing_file.txt"),
  value_do: String.length,
  exception_do: fn %{message: msg} -> msg end.()
# => 1000

branch OtherFile.read("./missing.file"),

expede

OtherFile.read("./existing_file.txt")
~> fn text -> 
  text
  |> String.length
  |> fn x -> x / 2 end.()
end.()
|> to_tagged_status
#=> {:ok, 500}

# `ok` alias for tagged_status

expede

use Exceptional

# Success case
iex> OtherFile.read("./existing_file.txt") >>> String.length
1000

# Error case                           
iex> OtherFile.read("./missing.file") >>> String.length
**(OtherFile.NotFoundError) File not found at ./missing.file