test word_utils

[learn-rust.git] / src / main.rs

diff --git a/src/main.rs b/src/main.rs
index 83d94c6cfde002df9a0aca1dc5f34f623bf3634a..396d3f2ccdca2859ca94bca79d9f8df2e426d3bd 100644 (file)
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,22 +1,6 @@
-fn first_word(s: &str) -> &str {
-    for (i, &item) in s.as_bytes().iter().enumerate() {
-        if item == b' ' {
-            return &s[..i];
-        }
-    }
-
-    s
-}
-
-fn second_word(s: &str) -> Option<&str> {
-    for (i, &item) in s.as_bytes().iter().enumerate() {
-        if item == b' ' {
-            return Some(first_word(&s[(i + 1)..]));
-        }
-    }
+mod word_utils;
 
-    return None;
-}
+use word_utils::{first_word, second_word};
 
 fn main() {
     let s = String::from("Hello world");
@@ -30,4 +14,19 @@ fn main() {
         Some(w) => println!("match: second word of '{}' exists: {}", s2, w),
         None => println!("match: second word of '{}' does not exist", s2),
     }
+
+    let v1 = vec![1, 2, 3];
+    println!("statically initialized vector: {:?}", v1);
+
+    let mut v2: Vec<String> = Vec::new();
+    v2.push("Hello".to_string());
+    v2.push(String::from("world"));
+    println!("dynamically built vector: {:?}", v2);
+    println!("first element: {}", v2[0]);
+    for el in &mut v2 {
+        *el += "xx";
+    }
+    for el in &v2 {
+        println!("{}", el);
+    }
 }