escape_hatch.ex

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"
# }

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

OtherFile.read("./existing_file.txt")
~> fn file -> 
  file
  |> String.to_charlist
  |> Enum.filter&(&1 == 101)
  |> Enum.count
end.()
# 2

OtherFile.read("./missing.file")
~> fn file -> 
  file
  |> String.to_charlist
  |> Enum.filter&(&1 == 101)
  |> Enum.count
end.()
# %OtherFile.NotFoundError{
#   message: "File not found at ./missing.file",
#   path: "./missing.file"
# }