What is the reason for not allowing internal definitions in the "then" and "else" parts of an "if"?
This fails with "define: not allowed in an expression context":
(if (< 3 4)
5
(begin
(define a 7)
a))
But the equivalent "cond" works fine:
(cond
[(< 3 4) 5]
[else (define a 7)
a])
I notice that the expansion of "cond" encloses the clauses inside
(let-values () ...). Why doesn't "if" allow this?
Justin
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