Here's my vote on things at the moment:
+1 on
do EXPR as VAR:
...
+1 on keeping the EXPR and VAR distinct.
+1 on keeping the do and generator protocols distinct.
+1 on not going out of our way to let the controller
catch exceptions or alter control flow. Let's keep it
as simple as we can.
-0.7 on directly giving generators do-protocol methods.
I'm not yet convinced that encouraging people to use
generators to implement block controllers is a good
idea. If we blur the distinction too much at this
stage, we may regret it later if we come up with a
better idea. Also I don't see that people will be
writing block controllers anywhere near as often as
iterators, so writing classes for them isn't going to
be a big chore. And people can always use a
do-protocol-to-generator adaptor if they really want.
Greg
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