This is a known issue, and the only "workaround" is to re-implement the IndexOf method. The same aplpies to a couple of other heavily overloaded methods in the System.Array type.
The problem is that F# has no way to specify an explicit instantiation of a generic method. Since this is a generally useful feature we will implement that in preference to making adhoc changes to type inference to cope with this.
Thanks
Don
Oh, another optionis to use the non-generic overload of the method, e.g.
1 2 3 4 5
let find (buffer: int[]) (item: int) : int = System.Array.IndexOf((buffer:>System.Array), item)
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Given the following:
let find (buffer: int[]) (item: int) = System.Array.IndexOf(buffer, item)
fsc complains that it can't resolve the overload without more type information. Can anyone tell me what annotation is needed here?
Thanks.