THU.APR,99040818:30-21| Eric Iverson , J Language . NYPC C++ and Java SIG, IBM , 590 Mad @  57  RSVP : Anne Faust |18:56| Eigenpicture : interal eigen functions . Knots in open GL graphics fn makefknot OpenGL primitive ?  Eric using white space to keep intro expressions clear .  Interactive auto script learning Lab . Me : written in J itself ? Y | extended precision arithmatic . | ( 2x ^ 70 ) - (2 ^ 70 ) |>| 262144 | lot of profs give names to everything  | power =: ^  |  bond &  `| `residue  ;  |. rotate  |: transpose Higher order fns :|   avg =:  +/   % #    ננ   (+/ d) % # d  parens color coded .  ' J =: complex rich ' Scripts .centigrade =: verb define t =. y. - 32              NB. local assignment ( t  * 5 ) % 9)  | NYSE monthly CDrom . - all exchanges .  same demo as  APL98 Rome .  (JCHAR ; 22) map_jmf_  'ctbin' 'filename'  $ cdbin  |>|  11332740 22  ctidx  is 200000 list of stock symbols    n fn\"1 d   || n wide moving application of fn  ( convolution ) .  noticed IBM large blocks traded lower | BrookeAlan - don`t forget a seller   on every trade too . 200M rows . Memory Mapped file like any other paged   memory . Hybrid w Excel front end . patched thru VisualBasic .. Similar to K method . Moskowitz : map range of cells ?  conditional  Yes . J compute engine loaded as a dll in C++ address space .|19:58|  www.cppsig.org |20:20| ?s : history - speakeasy normal keyboard matrix language . Why make new version of APL ? Ken Notation in mid `50 . Frustrated w User base . Can`t evove it . Split in `90 . took look @ universe of langs at that time . Mkt width & depth ? Academic & free lots - Serious - small # s . User :  J & ODCB | Other user actuary - moved to  J in  `97 | BA : J and APLs cooperate w each other well | EI : open libraries of interfaces . 'We thing in terms of things which are  timeless .' really mathamatians dealing w real world . Guy who knows  APL J & K :  J for applied math - stat & physics . Exception handling ? Y | Spreedsheet pkgs written in J ? No - don`t reinvent  . Do have grid object - can scroll over infinite amount of data ( fn ) . www.jsoftware.com | vs SPSS , SAS in handling large data ? Don`t know specifically , but very efficient on large data | aud : others have awesome libraries of fns  | EI : can go to Mathhand book and transliterate . BA : APL in `74 - same stuff now solve hugh real problems - SPSS have grown linearly in speed - APLs more like *2 | EI : Lang always stated problem way you wanted - now can run that way | BA : people converting his prototypes to eg C++ end up slower | EI : 'Compiler' becoming obsolete word ( a 'duh' to all of us APLers . ) Distribute encrypted scripts | Aud : IPC ? do like everyone else . mainly sockets . std library . |20:50|  ============================: THU.NOV,001116 :============================18|  Iverson`s J Language  85 West St . Marriott Fin .  RSVP  Eric Iverson presiding :|18:36| Brooke Allen has group | me only K-er . J 4.06 beta next week | pub early & often . incremental . more regular change proceedure . communication thru J Forum ; not usegrp . | Symbol data type . linear search algos . driven by performanve reqs of  client , 2bytes unicode chars as of tue , japanese . interface w VB . J as COM obj .  added to existing methods in COM . Brooke : symbol as index ? allow association . with sig except o K , opt for minimal , simple other language interface . Numerous perforance improvements . shift to .dll engine . high vol data procession UNIX 4.02  yr & half old . dependent on proprietayy compilers .Aud : improvement  v werse performance in releases ? test suite . let us know test suites . Pocket PC - style vs risc , Roger did . by e o yr . need standard library scripts . Win-CE Sockets ? dll call . COM COM+ CORBA RBC , Threading models - too old to hack . layers of software 5 mi thick . J socket w be simple & clean . Internet bings us full circle to TCP/IP . new session mngr in Java Unix . Window driver simple scripts continue to run . If wnted closed Java source , could ship now .  3 !: family  thru pipe , clean , internal to  Dyalog mistake of century .  multi threaded client .|19:44| EI : meeting schedule ?   Medisoft HQW each Q ? focused , so get something learned . Roger , Chris speak . Next meeting March . Eric @ metadata|20:2| Next conf Sept in NYC ? any volunteers ?

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