Thanks Bill and Christos, I'll chew on those and see how I make out! iain
On Wed, Jul 29, 2020 at 1:43 PM <[email protected]> wrote: > I'd use a dilambda, I think. > > (define my-state-thing > (let ((actual-state 'Maxwell)) > (dilambda > (lambda (field) > ;; the "getter", so (my-state-thing :foobar) calls this > function > actual-state) > (lambda (field new-value) > ;; the "setter", (set! (my-state-thing :foobar) new-value) call > this > (set! actual-state new-value))))) > > You could also make my-state-thing a "let": > (define my-state-thing (inlet :foobar 99)) > >
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