docs(rlp): move example to README.md (#177)

crates/dyn-abi/benches/abi.rs

@@ -96,7 +96,7 @@ fn sol_types_encode(c: &mut Criterion) {
 
     g.bench_function("struct", |b| {
         let input = encode_struct_input();
-        b.iter(|| Input::encode(&input));
+        b.iter(|| Input::encode(black_box(&input)));
     });
 
     g.finish();

crates/rlp/README.md

@@ -13,6 +13,30 @@ We strongly recommend deriving RLP traits via the `RlpEncodable` and
 
 Trait methods can then be accessed via the `Encodable` and `Decodable` traits.
 
+## Example
+
+```rust
+# #[cfg(feature = "derive")] {
+use alloy_rlp::{RlpEncodable, RlpDecodable, Decodable, Encodable};
+
+#[derive(Debug, RlpEncodable, RlpDecodable, PartialEq)]
+pub struct MyStruct {
+    pub a: u64,
+    pub b: Vec<u8>,
+}
+
+let my_struct = MyStruct {
+    a: 42,
+    b: vec![1, 2, 3],
+};
+
+let mut buffer = Vec::<u8>::new();
+let encoded = my_struct.encode(&mut buffer);
+let decoded = MyStruct::decode(&mut buffer.as_slice()).unwrap();
+assert_eq!(my_struct, decoded);
+# }
+```
+
 ## Provenance note
 
 This crate was originally part of the [reth] project, as [`reth_rlp`].

crates/rlp/src/lib.rs

@@ -3,36 +3,6 @@
     html_logo_url = "https://raw.githubusercontent.com/alloy-rs/core/main/assets/alloy.jpg",
     html_favicon_url = "https://raw.githubusercontent.com/alloy-rs/core/main/assets/favicon.ico"
 )]
-// This doctest uses derive, so it cannot be in the README :(
-#![cfg_attr(
-    feature = "derive",
-    doc = r##"
-
-## Usage Example
-
-```rust
-use alloy_rlp::{RlpEncodable, RlpDecodable, Decodable, Encodable};
-
-#[derive(Debug, RlpEncodable, RlpDecodable, PartialEq)]
-pub struct MyStruct {
-    pub a: u64,
-    pub b: Vec<u8>,
-}
-
-fn main() {
-    let my_struct = MyStruct {
-        a: 42,
-        b: vec![1, 2, 3],
-    };
-
-    let mut buffer = Vec::<u8>::new();
-    let encoded = my_struct.encode(&mut buffer);
-    let decoded = MyStruct::decode(&mut buffer.as_slice()).unwrap();
-    assert_eq!(my_struct, decoded);
-}
-```
-"##
-)]
 #![warn(
     missing_docs,
     unreachable_pub,