note.md

Questions

• no trap?
• no attribute?
• how to tell if an value is a null?
• no fill function?
• how to tell difference between datetime and time, datehour and hour etc?
• how to parse datetime type?
• no data type for `b`e`g?

Data Types

data type	@	Example	infinity	null
char	`c	"a"	-	-
name	`n	`a	-	-
int	`i	1	0W/-0W	0N
float	`f	1.	0w/-0w	0n
date	`d	2020.01.01	-	-
datehour	`h	2020.01.01T00:	-	-
dateminute	`r	2020.01.01T00:00	-	-
datesecond	`s	2020.01.01T00:00:00	-	-
datetime	`t	2020.01.01T00:00:00.000	-	-
hour	`h	00:	-	-
minute	`r	00:00	-	-
second	`s	00:00:00	-	-
time	`t	00:00:00.0	-	-
dictionary	`a	`sym`qty!(`a;1)	-	-
table	`A	,`sym`qty!(`a;1)	-	-
function	`.	{x+y}	-	-
string	`C	"ab"	-	-
names	`N	`a`b	-	-
ints	`I	1 2	0W/-0W	0N
floats	`F	1. 2.	0w/-0w	0n
dates	`D	2020.01.01+!2	-	-
datehours	`H	2020.01.01T00:+!2	-	-
dateminutes	`R	2020.01.01T00:00+!2	-	-
dateseconds	`S	2020.01.01T00:00:00+!2	-	-
datetimes	`T	2020.01.01T00:00:00.000+!2	-	-
hours	`H	00:+!2	-	-
minutes	`R	00:00+!2	-	-
seconds	`S	00:00:00+!2	-	-
times	`T	00:00:00.0+!2	-	-
list of string	`LC	,"ab"	-	-
list of names	`LN	,`a`b	-	-
list of ints	`LI	,1 2	0W/-0W	0N
list of floats	`LF	,1. 2.	0w/-0w	0n
list of dates	`LD	,2020.01.01+!2	-	-
list of datehours	`LH	,2020.01.01T00:+!2	-	-
list of dateminutes	`LR	,2020.01.01T00:00+!2	-	-
list of dateseconds	`LS	,2020.01.01T00:00:00+!2	-	-
list of datetimes	`LT	,2020.01.01T00:00:00.000+!2	-	-
list of hours	`LH	,00:+!2	-	-
list of minutes	`LR	,00:00+!2	-	-
list of seconds	`LS	,00:00:00+!2	-	-
list of times	`LT	,00:00:00.0+!2	-	-

Parse String -

`i$string

`i$"123"
`i$("123";"456")

Cast Type

`i value

`i 2020.01.01

Keyed Table

`a key +`a`b!2^!6
[[a:!3]b:3+!3]

String Operations

• join c/: "-"/("ab";"cd";"ef")
• split c\: "-"/"ab-cd-ef"

Set Operations

• take(inter) #: (1 3 5 7)#!4
• drop(except)_: (1 3 5 7)_!4
• has ':

`a`b`c'`a`b`x`y             \1100b
(1 2;4 5 6;7 9)'(1 2;8 9)   \10b

• bin '::

l:(5;{x*x})\:1.01           \1.01 1.0201 1.040604 1.082857 1.172578 1.37494
l':1.025                    \
l':'1.025 1.1               \