Am 15.01.21 um 12:43 schrieb Riccardo (Jack) Lucchetti:
> On Fri, 15 Jan 2021, Artur Bala wrote:
>
>> Dear developers,
>> I thought that the following "if" conditions are supposed to give the

> I'm not sure what we should do in an "if" block if the condition is
> neither true or false. At the moment, we treat NA as true (because it's
> non-zero), but I wonder if we should throw an error instead.

My two pennies worth: I'd agree with Sven, give a "NA" result and avoid an error message which will be consistent with the alternative (shorter) "if" syntax.

Best,

Artur