Never used a mailing list before, got kinda pushed into using it since for some reason i cant talk in IRC.
I am trying to learn how to use factor, the whole stack oriented, concatenative programming is alien to me. I am trying to implement Herons Formula, to work out the area of a triangle: Area = sqrt(s(s-a)(s-b)(s-c)) s = a+b+c /2 I've sort of worked out how to do s: : dev2 ( d -- s ) 2 / ; : sem ( a b c -- s ) + + dev2 ; *Problem 1:* IDK why the following doesn't work. : sem ( a b c -- s ) dup + + dev2 ; *Problem 2:* say i get the above problem fixed(use dup before calling the word) * * I dont know how to proceed with the current stack: -bottom of the stack- a b c s -top of the stack- i've tried various words to modify the top of the stack but, can't seem to arrange it into a way so i can compute what i need. * *
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