Function sha256_hex 

pub fn sha256_hex(data: &[u8]) -> String

Computes SHA-256 hash of data and returns it as a hex string.

Example

use alimentar::format::sha256_hex;

let hash = sha256_hex(b"Hello, World!");
assert_eq!(hash.len(), 64); // 256 bits = 32 bytes = 64 hex chars