Well said! Roger in the end gave up and made it an error to create _.
in a computation, leaving unspecified what should happen if a
preexisting _. is used as an argument.
A full spec for this 'mysterious subject' would be welcome. Then we
could try to implement it.
Henry Rich
On 2/8/2022 11:08 AM, Raul Miller wrote:
The characteristics of the null value have rather routinely introduced
errors in programs because of its non-intuitive characteristics.
It seems clear why we should want null -- null allows for lazy problem
specification, allowing the designer to not specify some data
elements. But correct handling of null has proven to be a rather
mysterious subject.
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