Updated 'src/async/streams.md'.

projects/stream_demo/Cargo.toml

@@ -0,0 +1,7 @@
+[package]
+name = "stream_demo"
+version = "0.1.0"
+edition = "2024"
+
+[dependencies]
+trpl = "0.3.0"

projects/stream_demo/src/main.rs

@@ -0,0 +1,17 @@
+use trpl::StreamExt;
+use std::time::Duration;
+
+fn main() {
+    let fut = async {
+        let values = [1, 2, 3, 4, 5, 6, 7, 8, 9, 10];
+        let iter = values.iter().map(|n| n * 2);
+        let mut stream = trpl::stream_from_iter(iter);
+
+        while let Some(value) = stream.next().await {
+            println!("值为： {value}");
+            trpl::sleep(Duration::from_secs(1)).await;
+        }
+    };
+
+    trpl::block_on(fut)
+}