ch08

ch8/ch10/update_old.rs

@@ -0,0 +1,13 @@
+use std::collections::HashMap;
+
+fn main() {
+    let text = "hello world wonderful world";
+    let mut map = HashMap::new();
+
+    for word in text.split_whitespace() {
+        let count = map.entry(word).or_insert(0);
+        *count += 1;
+    }
+
+    println!("{map:?}");
+}