From 00eaa91db598ad6ebe57024182e93bb82c3d75a3 Mon Sep 17 00:00:00 2001
From: Tony Arcieri <bascule@gmail.com>
Date: Mon, 20 Nov 2023 13:53:51 -0700
Subject: [PATCH] README.md: use `? instead of `expect` in example (#385)

Using `?` encourages users to properly handle errors rather than
panicking.
---
 README.md | 9 ++++++---
 1 file changed, 6 insertions(+), 3 deletions(-)

diff --git a/README.md b/README.md
index 1256e965..371c9fe6 100644
--- a/README.md
+++ b/README.md
@@ -12,21 +12,24 @@ A portable RSA implementation in pure Rust.
 ## Example
 
 ```rust
+# fn main() -> Result<(), rsa::Error> {
 use rsa::{Pkcs1v15Encrypt, RsaPrivateKey, RsaPublicKey};
 
 let mut rng = rand::thread_rng();
 let bits = 2048;
-let priv_key = RsaPrivateKey::new(&mut rng, bits).expect("failed to generate a key");
+let priv_key = RsaPrivateKey::new(&mut rng, bits)?;
 let pub_key = RsaPublicKey::from(&priv_key);
 
 // Encrypt
 let data = b"hello world";
-let enc_data = pub_key.encrypt(&mut rng, Pkcs1v15Encrypt, &data[..]).expect("failed to encrypt");
+let enc_data = pub_key.encrypt(&mut rng, Pkcs1v15Encrypt, &data[..])?;
 assert_ne!(&data[..], &enc_data[..]);
 
 // Decrypt
-let dec_data = priv_key.decrypt(Pkcs1v15Encrypt, &enc_data).expect("failed to decrypt");
+let dec_data = priv_key.decrypt(Pkcs1v15Encrypt, &enc_data)?;
 assert_eq!(&data[..], &dec_data[..]);
+# Ok(())
+# }
 ```
 
 > **Note:** If you encounter unusually slow key generation time while using `RsaPrivateKey::new` you can try to compile in release mode or add the following to your `Cargo.toml`. Key generation is much faster when building with higher optimization levels, but this will increase the compile time a bit.