Character Recipes

Source: character.spq (includes string.spq)

sk_seq

Generates a sequence 0..n-1 (like generate_series).

Type: operator

Argument	Description
`n`	Number of elements to generate

sk_seq(3)
-- => 0, 1, 2

Implementation:

op sk_seq(n): (
  split(sk_pad_left('', '0', n), '')
  | unnest this
  | count
  | values count - 1
)

Returns the 16 hex digit characters as an array.

Type: function

sk_hex_digits()
-- => ["0","1","2","3","4","5","6","7","8","9","a","b","c","d","e","f"]

Implementation:

fn sk_hex_digits(): (
  split("0123456789abcdef", "")
)

Converts an integer (0-127) to its ASCII character.

Type: function

Argument	Description
`code`	ASCII code (0-127)

sk_chr(65)
-- => 'A'

Implementation:

fn sk_chr(code): (
  let d = sk_hex_digits() |
  hex(f'{d[code/16]}{d[code%16]}')::string
)

Converts 1-26 to A-Z.

Type: function

Argument	Description
`n`	Number 1-26

sk_alpha(3)
-- => 'C'

Implementation:

fn sk_alpha(n): (
  sk_chr(64 + n)
)