On 4/12/22 00:57, Stephen J. Turnbull wrote:
Ethan Furman writes:
15mpg * 7l == how many miles?
Now it's my turn to not understand the point of this example.
My point is that when an object is instantiated it can normalize its arguments, and that that normalization should
happen with the original value (7 above, not 105), so when I put the above into the REPL I get `27 miles` instead of
`105 l*mpg`.
Now, it could easily be that more advanced uses of units (torque vs force? or whatever was mentioned some time ago)
would work better with the intermediate results being more in flux (quantum mechanics, anyone? heh) with the final units
being selected later (perhaps somebody wants kilometers instead of miles in the above example).
To rephrase my original point: `7_litres` is a different thing than `105_litres_mpg` -- is that a meaningless
difference? I don't know.
--
~Ethan~
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