Bytes

Bytes are sequences of raw byte values (0–255). b[...] is immutable; @b[...] is mutable.

Literals

b[1 2 3]                   # immutable bytes
@b[1 2 3]                  # mutable @bytes
b[0xff 0x0a 32]            # mixed hex and decimal

The b[...] syntax parallels [...] for arrays — b for bytes.

Construction (function form)

The bytes and @bytes functions construct bytes:

(bytes 1 2 3)              # immutable bytes from integers
(bytes "hello")            # string → bytes (UTF-8 encoding)
(@bytes 1 2 3)             # mutable bytes

Access

(def b (bytes 72 101 108))
(get b 0)                  # => 72
(length b)                 # => 3

Hex encoding

(seq->hex (bytes 1 2 3))           # => "010203"
(seq->hex (bytes 255))             # => "ff"
(seq->hex [1 2 3])                 # => "010203" (also works with arrays)
(seq->hex 255)                     # => "ff" (and non-negative integers)

bytes->hex is an alias for seq->hex.

Conversion