Access F# interactive (FSI) from Elixir.
FSharpy requires that either fsi.exe (on Windows) or fsharpi (On Mac or Linux) is installed and in your path.
Add Fsharpy to your mix dependencies.
To start an Fsharpy session...
iex> {:ok, p} = Fsharpy.start_ink
{:ok, #PID<0.142.0>}
Once an Fsharpy session has been started, you can use the print function to
send code to be evaluated in F# and have the results printed to IEX.
iex> Fsharpy.print p, "let x = 21 * 2"
F#: val x : int = 42
:ok
iex> Fsharpy.print p, "#help"
F#: F# Interactive directives:
F#:
F#: #r "file.dll";; Reference (dynamically load) the given DLL
F#: #I "path";; Add the given search path for referenced DLLs
F#: #load "file.fs" ...;; Load the given file(s) as if compiled and referenced
F#: #time ["on"|"off"];; Toggle timing on/off
F#: #help;; Display help
F#: #quit;; Exit
F#:
F#: F# Interactive command line options:
F#:
F#: See 'fsharpi --help' for options
:ok
To evaluate F# code and get results that can be used programatically in Elixir
you can use the eval function
iex> Fsharpy.eval p, "let x = 10"
[%{"x" => 10}]
iex> Fsharpy.eval p, "let y = x + 5"
[%{"y" => 15}]
iex> [map] = Fsharpy.eval p, "[1;2;3;4;5] |> List.map(fun n -> n * x)"
[%{"it" => [10, 20, 30, 40, 50]}]
iex> map["it"] |> Enum.reverse
[50, 40, 30, 20, 10]
To shut down the Fsharpy session
iex> Fsharpy.quit p
:ok