Refined 'src/packages_crates_and_modules/the_use_keyword.md'.

projects/idomatic_use/Cargo.toml

@@ -0,0 +1,6 @@
+[package]
+name = "idomatic_use"
+version = "0.1.0"
+edition = "2021"
+
+[dependencies]

projects/idomatic_use/src/main.rs

@@ -0,0 +1,7 @@
+use std::collections::HashMap;
+
+fn main() {
+    let mut map = HashMap::new();
+    map.insert(1, 2);
+    println! ("{:#?}", map);
+}