Convert

The Convert module contains various functions used for converting values to or from their FFI form. It also contains Error types in case conversions to not go as planned.

Documentation

fromBoolean :: Boolean -> Either ConversionError Bool

This method tries to to turn a number returned by FFI into a Bool. It's wrapped in an either in case the underlying number representing the Boolean is not 0 or 1

>>> fromBoolean 1
Right True

>>> fromBoolean 0
Right False

>>> fromBoolean 3
Left Failed to extract a boolean value in the use of fromBoolean. Number was not 0 or 1

data ConversionError

Error data type for conversions that have failed going to or from their FFI form

Instances

Eq ConversionError

Methods

(==) :: ConversionError -> ConversionError -> Bool

(/=) :: ConversionError -> ConversionError -> Bool

Show ConversionError

Methods

showsPrec :: Int -> ConversionError -> ShowS

show :: ConversionError -> String

showList :: [ConversionError] -> ShowS