CODEWITHSUNDEEP
f#functional-programming
user3711518
user3711518

Reputation: 253

Signature implementation in FSharp

Implement a signature in Fsharp

The Signature: MyLibrary.fsi

namespace myLib
module public MyModule1 =
    val addition : p:float -> float

The Implementation: MyLibrary.fs

namespace myLib
module public MyModule1 = 
    let addition p = p*2.0

The Testing

#load "C:\@@@@@\Projects\MyLibrary.fsi"
#load "C:\@@@@@\Projects\MyLibrary.fs"
open myLib.MyModule1

The error:

C:\@@@@@\Projects\MyLibrary.fsi(1,1): error FS0240: The signature file 'FSI_0015_MyLibrary' does not have a corresponding implementation file. If an implementation file exists then check the 'module' and 'namespace' declarations in the signature and implementation files match.

@@@@@ is the equivalent of my full path

Upvotes: 2

Views: 354

Answers (2)

JasonKerney
JasonKerney

Reputation: 21

The error you are getting is because you are running 2 different load statements. Each load has to be able to complete as a valid statement. If you combine the two statements it should work. You also need to escape the slashes. I did that using the '@' prefix. Here is an example:

#load @"C:\@@@@@\Projects\MyLibrary.fsi" @"C:\@@@@@\Projects\MyLibrary.fs"
open myLib.MyModule1

Upvotes: 1

weismat
weismat

Reputation: 7411

Hopefully I have understood what you are after. Please let me know if you need sth else?

module public MyModule =
        type IMyModule1 = 
            abstract member addition : double -> double
        type MyModule =
            interface IMyModule1 with 
                member this.addition p = p*2.0

Upvotes: 2

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