newRPL - build 1255 released! [updated to 1299]

[Claudio L.]

(11-26-2018 07:11 PM)ijabbott Wrote:  

(11-26-2018 04:54 PM)The Shadow Wrote:  I just looked at the 1959 document from the National Bureau of Standards, and in addition to defining the foot in terms of the meter, it also defined the pound in terms of the kilogram:


The source document can be found here as a PDF.

Also, in the UK:

[UK] Weights and Measures Act, 1963 Wrote:The yard or the metre shall be the unit of measurement of length and the pound or the kilogram shall be the unit of measurement of mass by reference to which any measurement involving a measurement of length or mass shall be made in the United Kingdom; and- (a) the yard shall be 0.9144 metre exactly; (b) the pound shall be 0.45359237 kilogram exactly.

— Weights and Measures Act, 1963, Section 1(1)

Thank you! That means there will be relatively few if any changes to be made. I should add all the constants but not as units, as actual constants that can be used in formulas. For the time being I'm working on a new symbolic rules engine from scratch. So far it applies basic rules, it's up to the level of the original rules engine I wrote 3 years ago, but this one is much cleaner code so I should be able to extend it to do the more advanced stuff with a lot less headaches. The old code became so convoluted I couldn't go on.