Shiro Kawai <xxxxxx@lava.net> writes:

> I don't know how much R6RS committee want to change string API,
> but I really wish R6RS strings be immutable.

Another quite important aspect of immutable strings is that one
can use ropes as the internal representation, effectively giving
high-performance STRING-APPEND and SUBSTRING operations. From my
experience (and I guess others'), those are much more common than
string mutation anyways.

Regards,
        -- Jorgen

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