CODEWITHSUNDEEP
f#
gistorx
gistorx

Reputation: 41

How cast string to voption struct?

i have simple struct

[<Struct>]
type Phone = private Phone of string

and i need cast to Phone voption

let toVOption (phone: string) : Phone voption = phone |> ValueOption.toObj

end i see error

Type mismatch. Expecting a 'string -> Phone voption' but given a ''a voption -> 'a' The type 'string' does not match the type ''a voption'

how correct cast string to Phone voption?

Upvotes: 0

Views: 64

Answers (1)

Mankarse
Mankarse

Reputation: 40613

You need to wrap the string in a Phone, and then wrap the Phone in a ValueOption:

let toVOption (phone: string) : Phone voption = phone |> Phone |> ValueSome

Upvotes: 1

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