missed a supporting definition in original post, this post is just definitions
only
cocurrent 'z'
NB. utilities pasted from jpp, hopefully did not forget any:
NoteV_z_ =: 1 : '(0 (0 :)) label_. 0 (m :)'
bb =: 1 : 'dltb each (''`''&cut) m'
lrA =: 1 : '5!:5 < ''u'''
eval =: 1 : 'if. 2 ~: 3!:0 m do. m else. a: 1 : m end.'
v2a =: 1 : 'a =. (''('' , u lrA ,'') m '') label_. 1 : (''m 1 :'' , quote a)'
numcolonnot01 =: {.@((0 1 _1 -.@e.~ ".@}:) *. ':' = {:)`0:@.('''' = {:)
a2blr =: 1 : 'if. 3 = nc <''u'' do. < u lrA else. boxopen m end.'
jt =: 2 NoteV
template n includes tokens in form of number colon (except for 0: 1:). if n
string it is tokenized.
those tokens will be replaced with blocked string expressions in m
a repeated token gets replaced multiple times.
a negative token gets replaced by the quoted m block.
m blocks will replace right to left in order of sorted token absolute values
(ie. if tokens are 2: _3: 5:, leftmost of 3 m blocks will replace 5: Rightmost
will replace 2:)
a null('') m block skips the token binding. Replaces token with +100 magnitude.
Limit of 100 unique replacement tokens.
too short of an m list, just partially binds the lowest magnitude token values.
an unboxed u (verb) parameter is replaced with a single boxed lr. unboxed m is
boxed. Less efficient to pass one parameter at a time, but supported.
if not fully bound, returns (jt n) adverb with n partially bound tokens.
if fully bound, returns result string
multiline n can be coerced into ` delimited single line to fit this function.
)
n =. ;:^:(0 = L.) n
m =. |. u a2blr
Ilist =. I. {.@numcolonnot01 &> n
nlist =. ".@}: each Ilist { n NB. numeric version of each n: param.
'too many parameters given' assert (#m) <: # ~. | each nlist
snlist =. /:@:( (| , ]) each) nlist
r =. m #~ (#m) {. #/.~ snlist { | each nlist
a =.|: jthelper r ,. (nlist (,<)"0 Ilist) {~ snlist {.~ #r
n =. ({. a) (; {: a)} n
if. 1 e. numcolonnot01 &> n do. (jt n) else. ;:inv L:1 <^:(1 = L.) n end.
)
jthelper =: 3 : 0("1)
'a b c' =. y
if. '' -: a do. a =. ':' ,~ ": (* * 100 + |) b
elseif. 0 > b do. a=. quote a end.
a;c
)
Jxp =: cutLF v2a 1 NoteV
creates tacit or explicit expression based on m.
m is either string (auto boxed to 1) or "multiline equivalent" boxed format.
if includes v/n, explicit conjunction
if includes u/m, explicit adverb
if includes x but not single line :, explicit dyad
if includes y, explicit monad
else tacit or noun expression, eval'd if not multiline.
)
if. 1 = #m do. m =. (>m) bb end. NB. ` is coded multiline
m =. ;: each m
if. +./ , (;: 'v n') e.S:1 m do. 2 : (;: inv each m)
elseif. +./ , (;: 'u m') e.S:1 m do. 1 : (;: inv each m)
elseif. (0 = (< ;: ':') e. m) *. +./ (;: 'x') e.S:1 m do. 4 : (;: inv each m)
elseif. +./ (;: 'y') e.S:1 m do. 3 : (;: inv each m)
elseif. 1 = #m do. (> ;: inv each m) eval else. ;: inv each m end.
)
some examples this permits are an easy way to create conjunction trains:
CC =: 2 : '( u ; v ) jt ''u (4: 3:) (2: v)'' Jxp'
CA =: 2 : '( u ; v ) jt ''(u 3: v) 2:'' Jxp'
AC =: 2 : '( u ; v ) jt ''(u 3:) 2: v'' Jxp'
----------------------------------------------------------------------
For information about J forums see http://www.jsoftware.com/forums.htm
