[e-lang] Labeled promises?
kpreid at attglobal.net
Tue Nov 29 14:06:23 EST 2005
Would it break anything in the E model to attach labels to promises?
Something like this:
? def [p1, r1] := Ref.promise("aardvark")
# value: [<aardvark promise>, <aardvark resolver>]
? def [p2, r2] := Ref.promise("animal")
# value: [<animal promise>, <animal resolver>]
# value: <aardvark promise>
# value: <Bob, the aardvark>
This would be primarily useful for debugging, such as finding out
"how far" a promise for a promise for ... has been resolved, or "What
was this promise that's showing up in my stack trace supposed to have
already been resolved to?"
Kevin Reid <http://homepage.mac.com/kpreid/>
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