A fully late bound namespace proposal
andreas.raab at gmx.de
Thu Oct 4 14:49:47 UTC 2007
Göran Krampe wrote:
> One way to do this is to compile a global ref as a message send so that:
> ...compiles *as if* it said:
> Smalltalk resolve: #Array
> ...or something similar. Then we can actually dynamically figure out if it
> should evaluate to "good old Array" or "Jim's new cooler Array" depending
> on for example the PI of the sender or any current remappings or whatever!
This is trivial to do but unfortunately it doesn't solve *any* real
problems. But it creates new ones: For example, access to classes would
suddenly be slowed down by 100x or more and you'd have to be very
careful where and how you use classes (no use in tight loops for
example) then creating new kinds of references (in iVars etc) that the
compilers don't know about and can't fix when recompiling stuff.
This has always been my problem with these late bound proposals: They
sound nice, but they do not solve any actual problem that their
proponents can point to, and everyone will be paying the price for a
horribly slow lookup of classes. Bad tradeoffs.
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