[unix-history] / usr / src / cmd / apl / documents / apl.6

.th APL VI 5/19/76
.sh NAME
apl \*- apl interpreter
.sh SYNPOSIS
.bd apl
.sh DESCRIPTION
This is the really improved APL interpreter.  It puts the
terminal into a funny mode, so watch out.  If it blows up, push
the single/multi page button to switch back.
.s3
All of the operators are exactly as in apl\\360.  Overstrikes are often
required, and they work (use space, not cursor right).  The keyboard is
just the same as a 2741 apl keyboard.
.s3
Function definition is not what you would expect.  Functions are loaded
from files.  The first line of the file is the function header, as you
would expect it but with no del.  The rest of the file is the lines
of the function.  Lines are numbered, but there's none of the
square bracket jazz.  If you say )READ FILE it will load the function
in that file.  If you say )EDIT FILE it will put you in the
unix editor to change that file. Upon exit, it will read the file in
as though by )READ.
.s3
All of the usual operators are available, including domino.
Also available are monadic encode and epsilon.
.sh FILES
apl_ws \*- temporary workspace file.
.s3
continue - continue workspace
.sh "SEE ALSO"
apl.2 \*- synposis of system commands
.sh BUGS
I don't know of too many, but mail any trouble reports to jrl.
.s3
Interpreter occasionally blows up, giving core images.
.s3
Character comparisons don't work (but try concatenating
a character vector to a numeric vector and vice versa.)
.s3
Many mixed functions take less general arguments than
you might expect.  Then again any integer origin is allowed.
Commit	Line	Data
a15aebc9 KT	1	.th APL VI 5/19/76
	2	.sh NAME
	3	apl \*- apl interpreter
	4	.sh SYNPOSIS
	5	.bd apl
	6	.sh DESCRIPTION
	7	This is the really improved APL interpreter. It puts the
	8	terminal into a funny mode, so watch out. If it blows up, push
	9	the single/multi page button to switch back.
	10	.s3
	11	All of the operators are exactly as in apl\\360. Overstrikes are often
	12	required, and they work (use space, not cursor right). The keyboard is
	13	just the same as a 2741 apl keyboard.
	14	.s3
	15	Function definition is not what you would expect. Functions are loaded
	16	from files. The first line of the file is the function header, as you
	17	would expect it but with no del. The rest of the file is the lines
	18	of the function. Lines are numbered, but there's none of the
	19	square bracket jazz. If you say )READ FILE it will load the function
	20	in that file. If you say )EDIT FILE it will put you in the
	21	unix editor to change that file. Upon exit, it will read the file in
	22	as though by )READ.
	23	.s3
	24	All of the usual operators are available, including domino.
	25	Also available are monadic encode and epsilon.
	26	.sh FILES
	27	apl_ws \*- temporary workspace file.
	28	.s3
	29	continue - continue workspace
	30	.sh "SEE ALSO"
	31	apl.2 \*- synposis of system commands
	32	.sh BUGS
	33	I don't know of too many, but mail any trouble reports to jrl.
	34	.s3
	35	Interpreter occasionally blows up, giving core images.
	36	.s3
	37	Character comparisons don't work (but try concatenating
	38	a character vector to a numeric vector and vice versa.)
	39	.s3
	40	Many mixed functions take less general arguments than
	41	you might expect. Then again any integer origin is allowed.