I would personally use an [option] and a form of startup-time configuration, quite comparable to the browser-feature detection in JavaScript.
So, something like let my_function = match Module.may_have_feature with | Some implementation -> implementation | None -> (*either a workaround or an error*) Cheers, David On 5/10/12 4:53 PM, Fabrice Le Fessant wrote: > I would say that it depends on how likely it is that somebody is going > to handle the case where the function is not implemented. I would use > a boolean to detect if the function is implemented, and calling the > missing function would raise an exception (be careful to define the > corresponding exception, using failwith "not implemented" might be too > generic to be useful, although I always do it in my programs ;-) ). If > it is highly likely that the program is going to handle the missing > function, using a Some type for the function is better idea. > > -Fabrice >
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