hot.dev/hot-std / ::hot::hex

Hexadecimal encoding and decoding functions.

Functions

decode core

fn (hex-str: Str): Bytes

Decode hexadecimal string to bytes.

Example

decode("48656c6c6f")
// Bytes([72, 101, 108, 108, 111]) — the bytes for "Hello"

// Convert decoded bytes to string
Str(decode("48656c6c6f"))
// "Hello"

encode core

fn (data: Str | Bytes): Str

Encode bytes or string to hexadecimal string.

Example

encode("Hello")
// "48656c6c6f"

encode(Bytes([72, 101, 108, 108, 111]))
// "48656c6c6f"

is-valid

fn (s: Str): Bool

Check if a string is valid hexadecimal (even length, valid hex characters).

Example

is-valid("48656c6c6f")  // true
is-valid("48656c6c6")   // false (odd length)
is-valid("ghijkl")      // false (invalid chars)