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Re: [PATCH] Add 'bytevector-slice'.

From: Ludovic Courtès
Subject: Re: [PATCH] Add 'bytevector-slice'.
Date: Wed, 11 Jan 2023 18:34:12 +0100
User-agent: Gnus/5.13 (Gnus v5.13) Emacs/28.2 (gnu/linux)


Jean Abou Samra <> skribis:

> What do you think about making it more similar to substrings?
> There the 'substring' procedure makes a copy-on-write substring,
> and you have substring/shared if you really want shared mutation.
> Would something like this be meaningful / feasible / useful
> for bytevectors?

I’m not convinced there’s a need for copy-on-write bytevectors, and it
would be hard to implement, and to implement
efficiently—bytevector-mutating instructions would have to check whether
they’re accessing a CoW bytevector and DTRT.

What could be convenient though is ‘bytevector-copy’ (no bang), which
would combine ‘make-bytevector’ + ‘bytevector-copy!’.


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