如何定义如下所示的异常?
exception CustomExn<'TMessage> of 'TMessage list
也许你可以直接继承System.Exception?
type CustomExn<'TMessage> (message:'TMessage list) =
inherit System.Exception ()
let test =
try
raise (CustomExn["string"] )
with
| :? CustomExn<string> -> "CustomExn of string"
| :? CustomExn<int> -> "CustomExn of int"
| _ -> "Everything else"
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