i. 10
i. 20
>: 3
i. >: 20
(i. >: 20)%20
3*(i. >: 20)%20
_0.5 + 3*(i. >: 20)%20
foo =: 3 : 0
'a b n' =. y
a,b,n
)
foo _0.5 2.5 20
'a b' =. 2 3 4
'a b' =. 2 3 
a
b
'a b' =. 2 ;3
a
'a b' =. 2 ;'now is the time'
a
b
bar =: 3 : 'y+1'
bar
bar1 =: 13 : 'y+1'
bar1
>:
bar1 =: 13 : '1+y'
bar1
foo2 =: +/ * 3
foo2 i. 5
foo2 0
foo2
foo3 +/ * (3"_)
foo3=: +/ * (3"_)
foo3
foo3 0 1 2
foo3 0 1 2 4
ave =: +/ % #
ave i. 2 3 4
 i. 2 3 4
ave"1 i. 2 3 4
ave"2 i. 2 3 4
define
each
each_j_
+/ each 1 2 3; 4 5 6;7 8 9 0
bc=:<"
0 bc i. 10
1 bc i. 10
2 bc i. 10
0 bc i. 2 3
1 bc i. 2 3
2 bc i. 2 3
\ i. 10
+\ i. 10
+\ 10
+\ 9 10
is =: /\
+ is 1 2 3 4 5