Module
Data.Number
- Package
- purescript-numbers
- Repository
- sharkdp/purescript-numbers
Functions for working with PureScripts builtin Number
type.
#fromString Source
fromString :: String -> Maybe Number
Attempt to parse a Number
using JavaScripts parseFloat
. Returns
Nothing
if the parse fails or if the result is not a finite number.
Example:
> fromString "123"
(Just 123.0)
> fromString "12.34"
(Just 12.34)
> fromString "1e4"
(Just 10000.0)
> fromString "1.2e4"
(Just 12000.0)
> fromString "bad"
Nothing
Note that parseFloat
allows for trailing non-digit characters and
whitespace as a prefix:
> fromString " 1.2 ??"
(Just 1.2)