Herby Vojčík wrote:
Hi,
shouldn't StopIteration, ForwardToTarget from "Notification proxies"
thread and similar ones be rather well-known unique symbols (like
@iterator), now that we have them, instead of well-known globals? \
Why?
Let's separate the naming and unique identity concerns. Objects have
unique identity, so do symbols. But if a unique identity is required
without being a property key, then an object is the right answer, not a
symbol. I think this applies to StopIteration.
Then there's the naming question. Should one have to use an @-name to
reference a singleton object? Again I say no. APIs have public names,
mostly or always. An identifier is a fine public name, better than a
non-private symbol if bound in a namespace object or module -- or even
if a global like JSON.
On the more general line, I got pretty fond of (unique) symbols, they
seem like very good things for these sentinel-like objects. Is it ok /
preferable to use them for that? No need to use empty objects bearing
only their identity any more, imo.
For unique identity, why do you care between symbol and object?
For naming, see above.
/be
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