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Re: Tree-IL on let
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From: |
Mark H Weaver |
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Subject: |
Re: Tree-IL on let |
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Date: |
Thu, 01 Jun 2017 19:34:18 -0400 |
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User-agent: |
Gnus/5.13 (Gnus v5.13) Emacs/25.2 (gnu/linux) |
Matt Wette <address@hidden> writes:
> In Tree-IL there is let, letrec and letrec* but not let*. Any reason
> why?
'let*' is a trivial convenience macro for nested 'let', whereas 'letrec'
and 'letrec*' are processed later in compilation, and neither one can be
efficiently implemented in terms of the other.
> I guess I should use (let () (let () …, right?
Yes.
Regards,
Mark
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