Hello Racketeers,
I have been playing around with the `math/number-theory` package and I
wanted to use a `for`-loop of Fibonacci numbers. I had to write something
like
(for ([i (in-naturals)])
(define fib (fibonacci i))
...)
So I thought it would be nice to have an `in-fibonacci` sequence. According
to the Racket reference [1] one can implement a custom sequence using
structure type properties, but according to the Typed Racket guide [2]
structure type properties are not supported in Typed Racket. Is there any
other way to get `in-fibonacci` into the module or should I just live
without it?
[1] https://docs.racket-lang.org/reference/sequences.html?q=sequences
[2]
https://docs.racket-lang.org/ts-guide/caveats.html#%28part._.Unsupported_features%29
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