From: Mark Wooding <mdw@distorted.org.uk>
Date: Sun, 6 Oct 2019 21:41:42 +0000 (+0100)
Subject: src/method-impl.lisp, etc.: Add a `readonly' message property.
X-Git-Url: https://git.distorted.org.uk/~mdw/sod/commitdiff_plain/e895be217c3be6769708da17c9ae87cb22db040e?hp=e895be217c3be6769708da17c9ae87cb22db040e

src/method-impl.lisp, etc.: Add a `readonly' message property.

If you have a `const' instance, it's useful to be able to send it
messages, so add a facility for marking messages as not modifying their
receivers.
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