done with challenges

README.md

@@ -1,5 +1,6 @@
 Working through the [Fly.io distributed systems challenge](https://fly.io/dist-sys/), in Rust.
 
-The `nebkor-maelstrom` crate is meant to be roughly equivalent to the Go Maelstrom.Node package, and
-provides serde-backed data structures for messages as well as runner for processing messages from
-the Maelstrom network. See `gg-echo/src/main.rs` for the simplest possible use of it.
+These solutions are built around the [nebkor-maelstrom](https://crates.io/crates/nebkor-maelstrom)
+crate, a dedicated Maelstrom client framework that uses no async and strives for simplicity of
+design and use. The most complicated client in this project is the `gg-kafka` client, at 158 lines;
+the entire workspace will build from clean in about five seconds.

gg-txn/src/main.rs

@@ -9,6 +9,13 @@ trait TxnSer {
     fn serialize(&self) -> Value;
 }
 
+#[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord, Hash, Default)]
+struct TxnOp {
+    op: String,
+    key: u64,
+    value: Option<u64>,
+}
+
 impl TxnSer for Txn {
     fn serialize(&self) -> Value {
         let out: Vec<Value> = self
@@ -28,13 +35,6 @@ fn main() {
     runner.run(None);
 }
 
-#[derive(Debug, Clone, PartialEq, Eq, PartialOrd, Ord, Hash, Default)]
-struct TxnOp {
-    op: String,
-    key: u64,
-    value: Option<u64>,
-}
-
 #[derive(Debug, Clone, Default)]
 struct TANode {
     store: HashMap<u64, u64>,