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Discriminated union with list of named fields in tuple

0-gravity 1 Reputation point
2021-04-27T21:12:23.187+00:00

Hi,

In C# I can create a list of tuples with named fields, such as:
new List<(Guid stageId, Guid formId)>()

Is it possible in F# to declare a Discriminated Union with list of tuples with named fields, for example:
type Assignment = Assignment of ((stageId: Guid, formId: Guid) list)* (payload: string)

Developer technologies | .NET | F#
Developer technologies | .NET | F#

A strongly typed, multi-paradigm programming language developed by the F# Software Foundation, Microsoft, and open contributors.

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  1. Max Anderson 0 Reputation points
    2026-02-12T20:28:38.37+00:00

    Yes, your syntax is valid in F#, but the idiomatic and safer print approach is to define a record type instead of relying on named tuples inside a discriminated union.

    type Assignment =

    { Items   : StageForm list

  Payload : string }

    That’s typically the most F#-idiomatic solution.

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  3. Billy Anderson 1 Reputation point
    2022-01-19T03:48:21.583+00:00

    Hey VPL

    Thanks for your concern but we do not understand your question about F#.. Can you please more clear about your question.

    Regards
    Billy RP

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  4. Vancouver Photo Lab 1 Reputation point
    2021-11-16T23:16:57.79+00:00

    We tried with F# to declare but its not possible.

    Thanks
    VPL

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