MacroPy's Hygienic Macros in Python | Hacker News Reader

MacroPy's Hygienic Macros in Python

github.com

7 pointslihaoyi4 comments

Technically these are still unhygienic macros, because it relies on the programmer's carefulness to avoid accidental capture. Hygienic macros prevent capture by default.

Still, nice work :) It'll be great to eventually have both types of macros available.

Yeah; they are waaaay more hygienic than what we started with though. For example, it is incredibly easy to "get it wrong" trying to utilize these tools to make things hygienic, but in general that should cause the macros to fail pretty quickly (`NameError`) rather than continue working unhygienically, so you're not likely to accidentally capture anything. Not perfect, but not bad (for now)

It would be great if someone who actually knows what he's doing (e.g. a Scheme `syntax-XXX` expert) could chip in with help/advice on how to proceed.

is "beyond 9000" some obscure(?) meme?

also, the example is confusing (well confused me), because it has two different things that have a value of 1. it would be clearer with

    func = f[_ + 100]

(for example) and changing everything else to match (imho).

cute project, though.

Beyond 9000 is a (not very) obscure meme

Noted, we may change it, thanks

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