arrays - 有没有一种简单的方法可以在 Fsharp 中将 byte [] 转换为 ReadOnlySpan<byte> ？

Question

我正在 Fsharp 中创建 RSA pki 并尝试加载私钥:

  let getRsa () =
    let rsa = RSA.Create()
    let privateKey = getPrivateKey()
    let bytesRead = ref 0
    match privateKey with
      | Some priv ->
          rsa.ImportRSAPrivateKey(source = priv, bytesRead = bytesRead)
          Some rsa
      | None -> None

不幸的是，这不会飞，因为:

This expression was expected to have type 'ReadOnlySpan' but here has type 'byte []' F# Compiler(1)

有没有办法转换成ReadOnlySpan？

Answer 1

您可以通过将字节数组传递到 relevant constructor 来创建 ReadOnlySpan :

System.ReadOnlySpan(priv)