Language.Fay.FFI

Documentation

data Fay a

The JavaScript FFI interfacing monad.

Instances

Monad Fay

Foreign a => Foreign (Fay a)

JS values are foreignable.

class Foreign a

Contains allowed foreign function types.

Instances

Foreign Bool

Bools are OK.

Foreign Char

Characters are OK.

Foreign Double

All numbers in JS are double.

Foreign Int

Some numbers in JS are int.

Foreign ()

Unit is OK.

Foreign a => Foreign [a]

Lists → arrays are OK.

Foreign a => Foreign (Maybe a)

Maybes are pretty common.

Foreign a => Foreign (Fay a)

JS values are foreignable.

Foreign a => Foreign (Defined a)

(Foreign a, Foreign b) => Foreign (a -> b)

Functions are foreignable.

(Foreign a, Foreign b) => Foreign (a, b)

Tuples → arrays are OK.

(Foreign a, Foreign b, Foreign c) => Foreign (a, b, c)

(Foreign a, Foreign b, Foreign c, Foreign d) => Foreign (a, b, c, d)

(Foreign a, Foreign b, Foreign c, Foreign d, Foreign e) => Foreign (a, b, c, d, e)

(Foreign a, Foreign b, Foreign c, Foreign d, Foreign e, Foreign f) => Foreign (a, b, c, d, e, f)

(Foreign a, Foreign b, Foreign c, Foreign d, Foreign e, Foreign f, Foreign g) => Foreign (a, b, c, d, e, f, g)

ffi

Arguments

:: Foreign a

=> String

The foreign value.

-> a

Bottom.

Declare a foreign action.