The "begin" and "begin0" forms appear in the racket programs, in the
fully expanded programs and in the bytecode. I expected that in some
intermediate expansion step the "begin0" form expands to a "begin"
form.
For example something like: (This version doesn't work for multiple
return values.)
(define-syntax-rule (my-begin0 first rest ...)
(let ([temp first])
rest ...
temp))
With this expansion the number of different kinds of operations in the
bytecode /virtual machine is smaller, so it would be easier to
maintain and optimize.
My question is: Is this a bad idea because there is a special
optimization for the "begin0" form?
Gustavo
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