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Void type?
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Date: | 2007-07-28 (18:49) |
From: | Stefan Monnier <monnier@i...> |
Subject: | Re: [Caml-list] Void type? |
>> Is there a void type in OCaml (i.e. a type which has no values), or a way to >> simulate it? > If you're looking for a "true" void (as opposed to the unit type, > which has exactly one value), just declaring it as an abstract type: > type void > should do the trick. You will be unable to instantiate any values of > that type using pure O'Caml (i.e. no Obj.magic or C code). But can I pass [] to a function that expects a "void list"? Stefan