Right, thanks. What I posted are just notes - the final version will be more usable, or at least more compact.
Your attachment didn't get to me. Henry Rich > -----Original Message----- > From: [EMAIL PROTECTED] > [mailto:[EMAIL PROTECTED] On Behalf Of June Kim > Sent: Wednesday, March 29, 2006 11:04 AM > To: Programming forum > Subject: Re: [Jprogramming] Proposal for J Reference Card > > Hi > > Thank you for the great reference card. > > I think I found a typo: > > (3 4;2 2) u;._3 selects <approp part of 8x8 abc mtx> > > Shouldn't it be instead: > > (3 4,:2 2) u;._3 selects <approp part of 8x8 abc mtx> > > I made a 2-column pdf version of your raw file and attached it just > for experimentation. > > > On 3/29/06, Henry Rich <[EMAIL PROTECTED]> wrote: > > I am working on a one-sheet reference card for J. It looks > like it will fit > > on front & back of an 8.5x11 sheet if I use an 8-point > font. I have a first > > pass at what I want to include, attached to this email as a > text file. I > > would like comments from interested users before I go > through the pain of > > cramming it onto a page. > > > > The intended user has a reading knowledge of J but may need > some reminding > > about what the primitives do. My goal is to include one > example of all the > > important idioms of J so that the interested user can look > it up in more detail > > if he finds it promising. The advanced reader who is > trying to become expert in > > J should feel that he has been exposed to most of the > language once he has finished > > reading the reference card. Coders trying to remember a > form should find enough to > > jog their memory. > > > > I am going to group the J facilities by function: > partitions, math, selection, etc. > > > > For each form, I have an example, my mnemonic, and a > result. If the result > > is an array it's not shown in the text file. The operands > A and B are > > a character array and a complex boxed structure which will > be shown in the > > legend. > > > > I don't really expect anyone to review the attached notes > in detail, but > > if y'all would think a minute about what features you have > found yourself > > forgetting, or some feature you didn't find out about for > years but now love, > > let me know if you don't find it listed. I say nothing > about useful verbs > > from the J scripts and I welcome suggestions about what to mention. > > > > Henry Rich > > > > > > > > > > > ---------------------------------------------------------------------- > > For information about J forums see > http://www.jsoftware.com/forums.htm > > > > > > > ---------------------------------------------------------------------- For information about J forums see http://www.jsoftware.com/forums.htm
