Re: program to compute gears, with table

[David Scheidt]

In rec.bicycles.tech Joerg <news@analogconsultants.com> wrote:
:On 2017-09-08 10:52, Emanuel Berg wrote:
:> Skip Montanaro wrote:
:>
:>> * Why the 1.0 divisor when computing gear?
:>
:> As explained, otherwise it'll be integer
:> division. But I think that qualifies as a hack
:> (not an ugly hack tho) so there is no shame in
:> spotting it an "error" :)
:>
:>> * You can skip the radius and use wheel
:>> (diameter) directly in computing
:>> the circumference.
:>
:> Right!
:>
:>> * It never occurred to me to do this in Lisp.
:>> I always just use an online calculator, like:
:>>
:>> 
http://www.gear-calculator.com/?GR=DERS&KB=34,50&RZ=12,13,15,17,19,21,23,25&UF=2150&TF=90&SL=2.6&UN=KMH
:>
:> Let's agree there is no need to do it in Lisp.
:> Only a desire :)
:>

:Why make things complicated? I do such stuff with spreadsheets. That's 
:what they were invented for. Part of every office software including 
:free ones.

I rewrote his code in common lisp in less time than it takes excel to
start.  


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