Money

Elixir library for working with Money safer, easier, and fun, is an interpretation of the Fowler's Money pattern in fun.prog.

"If I had a dime for every time I've seen someone use FLOAT to store currency, I'd have $999.997634" -- Bill Karwin

In short: You shouldn't represent monetary values by a float. Wherever you need to represent money, use this Money.

alias Money, as: M



five_eur       = M.eur(500);

ten_eur        = M.add(five_eur, five_eur);

ten_eur_div_2  = M.divide(five_eur, 2);



M.equals?(ten_eur_div_2, five_eur); # true

M.zero?(five_eur);                  # false

M.currency_symbol(:USD)             # $

M.currency_symbol(M.afn(500))       # ؋ 

M.currency_name(M.afn(500))         # Afghani

M.to_string(M.cny(500))             # ¥ 5.00

Installation

Install the library using mix deps.get. Add the following to your mix.exs:

def deps do

  [ { :money, "~> 0.0.1" } ]

end

Now run the mix deps.get command.

After you are done, run mix deps.get in your shell to fetch and compile Decimal. Start an interactive Elixir shell with iex -S mix.

iex> alias Money, as: M

nil

iex> M.usd(1000)

%Money{amount: 1000, currency: :USD}

iex> M.add(M.eur(500), M.eur(400))

%Money{amount: 900, currency: :EUR}

LICENSE

MIT License please see the LICENSE file.

ToDo