Extend an R to allow dual syntaxes (a "AND" b on "string") and you have it, trivially, from here.
BTW, you cannot handle JCL without it.... cleanly... On Tue, Jan 27, 2009 at 10:15 AM, Roger Hui <[email protected]> wrote: > In J, a numeric constant begins with _ or 0-9, > continues with _ or 0-9 or . or a-z or A-Z, and ends > with a character which is not one of the preceding > or at the end of the string. This is modeled in the ;: > dictionary page. > http://www.jsoftware.com/help/dictionary/d332.htm > The model also handles numeric vector constants. > > The word formation rules specify as "number" > strings that are currently not interpreted as numbers. > For example 2i3j4k5 (future quaternion?) > > > > ----- Original Message ----- > From: bill lam <[email protected]> > Date: Monday, January 26, 2009 22:29 > Subject: Re: [Jprogramming] regex for j numeric constants > To: [email protected] > > > I think that does not yet cover the case of base and rational, > > eg, > > > > r0 rxall '16babde 123r222' > > +--+---+---+ > > |16|123|222| > > +--+---+---+ > > ". '16babde 123r222' > > 43998 0.55405405 > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm > -- Use Reply-To: & thread your email after the first: or it may take a while, as I get 2000+ emails per day. -- Roy A. Crabtree UNC '76 gaa.lifer# 11086 703-318-2106 (msgs only, use my name) (mail, residence) Roy A. Crabtree 3322 Wheeler Road SE Oak Hill Apartments #T-4 Washington, DC 20032-4166 (secondary mail) Roy A. Crabtree USPS POB 58097 Washington, DC 20034-8097 [When you hear/read/see/feel what a y*ehudi plays/writes/sculpts/holds] [(n)either violinist {Menuhin} (n)or writer {"The Y*ehudi Principle"} (n)or molder (n)or older] [you must strive/think/look/sense all of it, or you will miss the meanings of it all] [email protected] Forwards only to: [email protected] [email protected] CC: auto to ^ http://musings-roy-crabtree.blogspot.com [& others] http://www.authorsden.com/royacrabtree http://skyscraper.fortunecity.com/activex/720/resume/full.doc -- (c) RAC/IP, ARE,PRO,PAST (Copyright) Roy Andrew Crabtree/In Perpetuity All Rights/Reserved Explicitly Public Reuse Only Profits Always Safe Traded ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
