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// Copyright 2018-2022 the Deno authors. All rights reserved. MIT license.
use ring::digest::Context;use ring::digest::SHA256;
pub fn gen(v: &[impl AsRef<[u8]>]) -> String {  let mut ctx = Context::new(&SHA256);  for src in v {    ctx.update(src.as_ref());  }  let digest = ctx.finish();  let out: Vec<String> = digest    .as_ref()    .iter()    .map(|byte| format!("{:02x}", byte))    .collect();  out.join("")}
#[cfg(test)]mod tests {  use super::*;
  #[test]  fn test_gen() {    let actual = gen(&[b"hello world"]);    assert_eq!(      actual,      "b94d27b9934d3e08a52e52d7da7dabfac484efe37a5380ee9088f7ace2efcde9"    );  }}