Created
May 19, 2018 00:12
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[Constrain functions to specific unit types] #mathematica
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| f[x_]:=x | |
| f[5] ==> 5 | |
| f[x: Quantity[_, unit_]?(CompatibleUnitQ[#, "feet"] &)]:=x (* Important that parameters in list do not have underscore *) | |
| f[5] ==> f[5] | |
| f[Quantity[5, "feet"]] ==> 5 ft | |
| f[Quantity[5, "meters"]] ==> 5 m | |
| f[Quantity[5, "pound"]] ==> f[5 lb] |
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