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Release
Release Notes contents Title
J 7.02/8.01/8.02/8.03
extensive changes to front ends - essentially no changes to J Engine
J 7.01 2010-08-05
^ Improved
+/ .* Improved
f/ .g Improved
6!:4 Added
7!:1 Removed
,&.>/"r Improved
{/: and {/:~ Improved
#\ and #\. Improved
m} Improved
^@o. Implemented
5 p: y Improved
0: and 1: Changed
J 6.02 2008-02-29
<. and >. Improved
_. Changed
Rank-0 Monads Improved
Integer Division and Remainder Improved
(2;a)$.y and $.y Improved
4$.y and 5$.y Improved
+/ .* Improved
;!.f Implemented
(+/%#)"r Improved
6!:0 Extended
1!:45 Removed
1!:46 Added
128!:5 Added
u/. Improved
u//. Improved
(+/%#)/. Improved
f/\ Improved
m b./\ Improved
f/\. Improved
{ Improved
p {~ q i. ] Improved
m} and u} Improved
u&.(a.&i.) Improved
?. Changed
b. Inverses Implemented
i. Extended
i. Improved
M. Implemented
o. Changed
u: Extended
J 6.01 2006-07-21
Boxed Array References Improved
N0 V1 V2 Implemented
-.@-:"r Improved
f@]^:g Improved
+/ .* Improved
^: New Inverses
: Explicit Names Changed
13 : y Improved
;: Extended
3!:n Changed
4!:56 Removed
5!:5 and 5!:6 Improved
8!:n Format Implemented
9!:0 and 9!:1 RNG Seed Extended
9!:42 and 9!:43 RNG Select Implemented
9!:44 and 9!:45 RNG State Implemented
9!:46 and 9!:47 Break File Implemented
9!:48 and 9!:49 Explicit Argument Names Implemented
128!:4 RNG Raw Implemented
f/ Improved (a)
f/ Improved (b)
f/@:g Improved
f//. and f//.@(g/) Improved
2 f/\y Improved
x m} y Changed
": Changed
"."0@": Improved
? Improved
C. Improved
f. Improved
i. Improved
I. Interval Index Implemented
p. Improved
p: Dyad Implemented
p:^:_1 Improved
q: Improved
u: Extended
Appendix E Added to Dictionary
Recursion Limit Changed
J 5.04 2005-03-18
J64 Available
%. Improved
u^:n Extended
f/ .g Improved
u;.n Extended
3!:4 Extended
9!:37 Changed
128!:3 Implemented
#/. Improved
({.,#)/. Improved
/:@/: Improved
f/\. Improved
". Extended
": Improved
e.i.1: Improved
i. Improved
i.!.0 Improved
m&i. Improved
i.<./ Improved
q: Improved
Errors Changed
Function Call Depth Limit Changed
J 5.03 2004-03-19
0*_ Changed
-. Improved
~. Improved
~: Improved
, Append in Place Implemented ;@:{ Improved u;.n Improved x;:y Implements Sequential Machine u/"r Improved u/. Improved u/\ Improved (+/ % #)\ Improved [: +./ < Improved
? and ?. Improved
e. Improved
f. Improved
i. Improved
I. Implements Indices
J 5.02 2003-05-21
#^:_1 Improved
7!:6 Locale Space Implemented
13!:16 Withdrawn
m@.v"0 Improved
c. Withdrawn
o. Improved
J 5.01 2002-09-10
+ on Sparse Arguments Improved
+. on Rational Arguments Improved
$ and # Extended v;.0 Extended
];.0 Improved
Error Messages Include Script Name 1!:43 and 1!:44 Current Directory Implemented 1!:45 Profile Implemented 13!:8 Changed
13!:x New Debug Facilities
128!:2 Apply Implemented
=/ and ~:/ Improved
f/ on Sparse Arguments Improved
gerund/ Improved
/: and \: Sparse Arguments
/: and \: Improved
,\ Improved
{. and {: Extended
&.: Under Implemented
b. Bitwise Operations Implemented
p.. Polynomial Derivative/Integral Implemented
< i. 1: Improved
J 5.01 Non-Compatible Changes
J 4.06 2001-05-09
-. Sparse Arguments
~. Sparse Arguments
~: Sparse Arguments
m : 0 Space Consumption Reduced
(f,) Improved
f;.1 Extended
f;.3 Extended
f;.n Sparse Arguments
# Improved
# Sparse Arguments
# i.@# Improved
7!:5 Space Implemented
9!:4 and 9!:5 Removed
9!:6 and 9!:7 Changed
9!:34 and 9!:35 Assertions Implemented
9!:36 and 9!:37 Output Control Implemented
9!:38 and 9!:39 Locale Hash Table Size Implemented
9!:40 and 9!:41 Retain Comments and White Space Implemented
18!:3 Extended
f/. Sparse Arguments
2 f/\y Improved
{ Improved
{ Sparse Arguments
m&v Extended
e. Sparse Arguments
i. and i: Improved
i. Sparse Arguments
s: Symbols Implemented
u: Unicode Implemented
assert. Implemented throw. Implemented try. Extended Locale Improvements
Dictionary Available in HTML
J 4.05 2000-09-05
|. Improved
-/ . * Improved
<@}.;.n Improved
#: i.@(*/) Improved
3!:1, 3!:2, and 3!:3 Extended
5!:7 Explicit Representation Implemented
6!:x Performance Monitor Implemented
Performance Monitor Utilities
9!:32 and 9!:33 Execution Time Limit Implemented
13!:0 ]2 Error Capture Implemented
f/@, Improved
,./ Improved
u/.!.t Key Implemented
/: Improved
c}x,y,:z Improved
u"r Improved
A. Improved
C.!.2 Permutation Parity Implemented
i. and i: Improved
Mapped Boxed Arrays
Older Versions
Implementation Status