I have used o for +/ . * remembering matrix multiplication corresponds to composition of linear transformations.
Sent from my iPad On Jan 19, 2012, at 12:32 PM, Raul Miller <rauldmil...@gmail.com> wrote: > I have dabbled with o=:@: but personally I never became comfortable > enough with redefined primitives to rely on it. > > It's only a space savings when neither word on either side is user defined. > > That said, the purpose of a naming convention is to help you get up to > speed faster on unfamiliar words. It's not the only technique for > that end. > > -- > Raul > > > On Thu, Jan 19, 2012 at 1:10 PM, Tracy Harms <kalei...@gmail.com> wrote: >> Raul, >> >> I find this convention you've spelled out to be attractive, and in my >> larger J projects have written pretty much in conformance to it. I deviate >> from it, though, when it comes to a few items. Most prominent is the >> convention I learned from J.M. Quintana of using lower-case o to mean At >> (@:). I've become quite fond of that, and have found it nice in both >> reading and writing. For me it is an example of how a few inconsistencies >> can be more appealing than a rule that can always be counted on. >> >> --Tracy >> >> >> On Thu, Jan 19, 2012 at 12:16 PM, Raul Miller <rauldmil...@gmail.com> wrote: >> >>> An a slightly longer answer is: single letter names can be either >>> lowercase or uppercase, but can't be mixed case. And the same would >>> hold for names which are numbers prefixed with a single letter. So >>> those names would either be verb names (when the letter was lower >>> case) or noun names (when the letter was upper case). Adverbs and >>> conjunctions would have at least two letters in their names, if you >>> were following this naming convention. >>> >>> But Devon's comments are also important: in general, names should be >>> meaningful to your audience -- to people that will be reading these >>> names. >>> >>> -- >>> Raul >>> >>> On Thu, Jan 19, 2012 at 11:25 AM, Devon McCormick <devon...@gmail.com> >>> wrote: >>>> The short answer is: don't do that. >>>> >>>> If you want to use single letter names for throw-away, local temp >>>> variables, that's fine but the point of a global is that it has some >>>> importance and ubiquity. >>>> >>>> I'm a big fan of terseness - e.g. >>>> http://www.jsoftware.com/jwiki/NYCJUG/2009-08-11#TerserisBetter - but >>> would >>>> it really kill you to add a letter or two? Not to mention the extra >>>> difficulty of searching for single-letter names... >>>> >>>> On Thu, Jan 19, 2012 at 9:50 AM, Viktor Cerovski >>>> <viktor.cerov...@gmail.com>wrote: >>>> >>>>> >>>>> >>>>> Raul Miller-4 wrote: >>>>>> >>>>>> I wrote up a wiki essay (or perhaps a rant) on some issues that come >>>>>> up in the context of parsing J: >>>>>> http://www.jsoftware.com/jwiki/Raul%20Miller/ParsingJ >>>>>> >>>>>> My suggestions there may not be ideal, but I sort of like them. >>>>>> >>>>>> -- >>>>>> Raul >>>>>> ---------------------------------------------------------------------- >>>>>> For information about J forums see >>> http://www.jsoftware.com/forums.htm >>>>>> >>>>>> >>>>> Leaving the question of style aside, there is one formal problem >>>>> with the convention: how would one interpret names consisting of >>>>> a single capital letter (with or without trailing numbers): as nouns >>>>> or adverbs? Both naming schemes make sense. For instance: >>>>> >>>>> I =: 1 >>>>> I1 =: /("1) >>>>> I2 =: /("2) >>>>> E =: &.> >>>>> >>>>> Also, some might prefer additionally to have something like: >>>>> >>>>> e=:1x1 >>>>> >>>>> etc. >>>>> -- >>>>> View this message in context: >>>>> http://old.nabble.com/wiki-essay-tp33157128s24193p33168317.html >>>>> Sent from the J Programming mailing list archive at Nabble.com. >>>>> >>>>> ---------------------------------------------------------------------- >>>>> For information about J forums see http://www.jsoftware.com/forums.htm >>>>> >>>> >>>> >>>> >>>> -- >>>> Devon McCormick, CFA >>>> ^me^ at acm. >>>> org is my >>>> preferred e-mail >>>> ---------------------------------------------------------------------- >>>> For information about J forums see http://www.jsoftware.com/forums.htm >>> ---------------------------------------------------------------------- >>> For information about J forums see http://www.jsoftware.com/forums.htm >>> >> ---------------------------------------------------------------------- >> For information about J forums see http://www.jsoftware.com/forums.htm > ---------------------------------------------------------------------- > For information about J forums see http://www.jsoftware.com/forums.htm ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
