Language.Fay.FFI

Documentation

data JsPtr a

In case you want to distinguish values with a JsPtr.

Instances

Foreign (JsPtr a)

Pointers to arbitrary objects are OK.

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 (Fay a)

JS values are foreignable.

Foreign (JsPtr a)

Pointers to arbitrary objects are OK.

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

Functions are foreignable.

ffi

Arguments

:: Foreign a

=> String

The foreign value.

-> a

Bottom.

Declare a foreign action.