Function hex_encode

datafusion/spark/src/function/hash/sha2.rs:252–263

(data: T)

#[inline]
fn hex_encode<T: AsRef<[u8]>>(data: T) -> String {
    let bytes = data.as_ref();
    let mut out = Vec::with_capacity(bytes.len() * 2);
    for &b in bytes {
        let hi = b >> 4;
        let lo = b & 0x0F;
        out.push(HEX_CHARS[hi as usize]);
        out.push(HEX_CHARS[lo as usize]);
    }
    // SAFETY: out contains only ASCII
    unsafe { String::from_utf8_unchecked(out) }
}