`til`¶

First x natural numbers

til x    til[x]

Where x is a non-negative integer atom, returns a vector of the first x integers.

q)til 0
`long$()
q)til 1b
,0
q)til 5
0 1 2 3 4
q)til 5f
'type
  [0]  til 5f
       ^

til and key are synonyms, but the above usage is conventionally reserved to til.

til¶