Extend custom numeric types to support floating point literals

[cloudRoutine]

Idea 8140617: Extend custom numeric types to support floating point literals

Status : planned
Submitted by Phillip Trelford on 5/27/2015 12:00:00 AM
13 votes

Currently you can define custom numeric types for integer values.
It would be nice to be able to handle floating point values too, e.g.
type complex = Complex of double * double
type imaginery = Imaginery of double
with
static member (+) (lhs:double,Imaginery(rhs)) = Complex(lhs,rhs)
module NumericLiteralI =
let FromZero () = Imaginery 0.0
let FromOne () = Imaginery 1.0
let FromInt32 (x) = Imaginery (double x)
let FromInt64 (x:int64) = Imaginery (double x)
let FromDouble (x:float) = Imaginery x // extension
let polar = 1.5 + 2.5I

Response

** by fslang-admin on 3/4/2016 12:00:00 AM **

Now marking as planned, which means we can move to an RFC https://github.com/fsharp/FSharpLangDesign/tree/master/RFCs
The details remain to be worked out however
Don Syme
F# Language Evolution
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