Re: counting number of rules in rule base

*To*: mathgroup at christensen.cybernetics.net*Subject*: [mg1561] Re: counting number of rules in rule base*From*: "John M. Lee" <lee at math.washington.edu>*Date*: Sat, 24 Jun 1995 05:59:10 -0400*Organization*: University of Washington Department of Mathematics

gaylord at uiuc.edu (richard j. gaylord) wrote: >i am creating a large number of rewrite rules of the form symb[arg] = rhs > >these rules are being generated automatically and i don't know how many >rules are created [in the case i'm dealing with it, its over 500]. > >without doing ?symb and then counting the number of rules that come up on >my monitor screen [i keep losing count around 125 or so], how can i ask >Mathematica for the number of rules associated with symb? > Try: Length[DownValues[symb]] -- John M. Lee University of Washington Dept. of Mathematics Box 354350 Seattle, WA 98195-4350