From: Devin Mullins Date: 2005-06-26T16:49:56+09:00 Subject: Re: RubyNuby Q: Howto Ri In this case, you'd have to dig a little further. The first line says Integer < Numeric, so you have to look at its base class, Numeric. You'll find step in there. Also, you can just type `ri step`. You'll get the following returned: More than one method matched your request. You can refine your search by asking for information on one of: Date#step, Numeric#step, Range#step You can then `ri Numeric#step` to find out the details. HTH, Devin (see?) Meino Christian Cramer wrote: >Hi, > > Suppose I want to get an info from ri about Integers. > > In a code I found > > 17.step(self,2) > > and I would like to ask ri about this construct. > > I typed > > ri Integer > > and got > > ----------------------------------------------- Class: Integer < Numeric > +Integer+ is the basis for the two concrete classes that hold whole > numbers, +Bignum+ and +Fixnum+. > > ------------------------------------------------------------------------ > > > Includes: > --------- > Precision(prec, prec_f, prec_i) > > > Class methods: > -------------- > induced_from > > > Instance methods: > ----------------- > ceil, chr, downto, floor, integer?, next, round, succ, times, to_i, > to_int, truncate, upto > > > there is nothing mentioned about "step"...so I did something wrong > here. > > So...what should I feed into ri to get an appropiate answer. > ("step" is only an example...) > > Have a nice and ruby day! > Meino > > > > >