| x 5!:0 |
Define. 5!:0 is an adverb and provides a
complete inverse of 5!:1.
That is, (5!:1 <'f') 5!:0 equals f
for all f .
|
| |
| 5!:1 y |
Atomic. The atomic representation of the entity
named y and is used in gerunds. The result is
a single box containing a character list of the symbol
(if primitive) or a two-element boxed list of the symbol
and atomic representation of the arguments (if not primitive).
Symbol-less entities are assigned the following encodings:
0 Noun
2 Hook
3 Fork
4 Bonded conjunction or train of adverbs
For example:
plus=: +
5!:1 <'plus'
+-+
|+|
+-+
noun=: 3 1 4 1 5 9
5!:1 <'noun'
+---------------+
|+-+-----------+|
||0|3 1 4 1 5 9||
|+-+-----------+|
+---------------+
increment=: 1&+
5!:1 <'increment'
+-------------+
|+-+---------+|
||&|+-----+-+||
|| ||+-+-+|+|||
|| |||0|1|| |||
|| ||+-+-+| |||
|| |+-----+-+||
|+-+---------+|
+-------------+
|
| 5!:2 y |
Boxed.
nub=: (i.@# = i.~) # ]
5!:2 <'nub'
+-------------------+-+-+
|+--------+-+------+|#|]|
||+--+-+-+|=|+--+-+|| | |
|||i.|@|#|| ||i.|~||| | |
||+--+-+-+| |+--+-+|| | |
|+--------+-+------+| | |
+-------------------+-+-+
|
| 5!:4 y |
Tree. A literal matrix that represents the
named entity in tree form. Thus:
5!:4 <'nub'
+- i.
+- @ -+- #
+---+- =
| +- ~ --- i.
--+- #
+- ]
|
| 5!:5 y |
Linear. The linear representation is a string which,
when interpreted, produces the named object. For example:
5!:5 <'nub'
(i.@# = i.~) # ]
5!:5 <'a' [ a=: o. i. 3 4
3.14159265358979324*i.3 4
lr=: 3 : '5!:5 <''y'''
lr 10000$'x'
10000$'x'
|
| 5!:6 y |
Paren. Like the linear representation, but is fully parenthesized.
5!:6 <'nub'
((i.@#) = (i.~)) # ]
|
| x 5!:7 y |
Explicit.
The left argument is 1 (monadic) or 2 (dyadic);
the right argument is the boxed name of
a verb, adverb, or conjunction. For example:
perm=: 3 : 0
z=. i.1 0
for. i.y do. z=.,/(0,.1+z){"2 1\:"1=i.>:{:$z end.
)
1 (5!:7) <'perm'
+-+----------+-------------------------------+
|0|1 _1 0 |z=.i.1 0 |
+-+----------+-------------------------------+
|1|65536 2 1 |for. |
+-+----------+-------------------------------+
|2|2 _1 1 |i.y |
+-+----------+-------------------------------+
|3|131072 6 1|do. |
+-+----------+-------------------------------+
|4|1 _1 1 |z=.,/(0,.1+z){"2 1\:"1=i.>:{:$z|
+-+----------+-------------------------------+
|5|32 3 1 |end. |
+-+----------+-------------------------------+
The result of 5!:7 is a 3-column boxed matrix.
Column 0 are the boxed integers 0 1 2 ... n-1.
Column 1 are boxed 3-element integer vectors of
control information:
control word code,
goto line number, and
source line number.
Column 2 are boxed control words and sentences.
The result of 5!:7 is a 0 3 empty matrix
if the named object is not an explicit definition, or
is undefined for the specified valence. |