Straightforward to use a struct, or a a tagged value like (cons 'cm 10) and then have your procedure parse the argument.
Deren On Sep 30, 2014 11:14 AM, "Tomi Pieviläinen" < [email protected]> wrote: > First apologies to Alexsandro Soares, if I'm intruding, but I wasn't > sure if you were on the mailing list and you were asking about this in > June. > > I tested how well Racket runs on the Lego Mindstorms EV3 (with > ev3dev), and found out that there is enough memory on the device to > get a REPL running. The loading time is somewhat annoying, but not > prohibitive. I also started creating a library for using the ev3dev > kernel exposed file based API. I tested that I can use the color and > ultrasonic sensors, and motors. The rest is simple from those. > > I'm a bit stuck by trying to grok Racket better. I'm thinking about > possibility to have some kind of "typed literals" for distance, time > and angle, so that I could use (move-robot 11cm) or (move-robot 11s) > like calls, instead of having separate functions for time and distance > variables, or having to create the values with (cm 11) or such. > > Not sure if that makes any sense, but I was thinking that it might > feel more natural and also I'm interested in seeing how easily it > could be done. > > -- > Tomi Pieviläinen, +358 400 487 504 > A: Because it disrupts the natural way of thinking. > Q: Why is top posting frowned upon? > > ____________________ > Racket Users list: > http://lists.racket-lang.org/users >
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