As Crock said, the problem programmers face is "I have a value, I want
to treat it as an object and get a property (call a method, etc.). How
do I test is-this-an-object so that I can use dot without worrying about
that throwing right away on null left-hand side?"
/be
John J Barton wrote:
On Tue, May 8, 2012 at 6:07 PM, Brendan Eich<[email protected]> wrote:
Object class reflection is frowned upon in Smalltalk for a reason. We want
protocols, structural conventions -- not nominal type tags. Or so I think!
Perhaps it would be helpful if someone made the case for typeof null
=== 'null'.
To me typeof null === 'object' is fine. It makes null a value in the
space of 'object'. In practice I see 'null' used to mean "I know this
reference (usually an argument) should be an object; I want to pass
nothing but signal that I really did mean to pass nothing." The status
quo allows this and it seems enough work for null to do for us.
Are there new things I can do if I now have a new answer to the
'typeof' question?
jjb
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