From: Martin Pitt <martin@piware.de>
Date: Sun, 22 Aug 2021 13:24:27 +0000 (+0200)
Subject: Put functions into module
X-Git-Url: https://piware.de/gitweb/?a=commitdiff_plain;h=da5e8d881fe6e659d168b7ace5ab9af35541a613;p=learn-rust.git

Put functions into module
---

diff --git a/src/main.rs b/src/main.rs
index 83d94c6..7a83cb4 100644
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,23 +1,27 @@
-fn first_word(s: &str) -> &str {
-    for (i, &item) in s.as_bytes().iter().enumerate() {
-        if item == b' ' {
-            return &s[..i];
+mod word_utils {
+    pub fn first_word(s: &str) -> &str {
+        for (i, &item) in s.as_bytes().iter().enumerate() {
+            if item == b' ' {
+                return &s[..i];
+            }
         }
-    }
 
-    s
-}
+        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)..]));
+    pub 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)..]));
+            }
         }
-    }
 
-    return None;
+        return None;
+    }
 }
 
+use word_utils::{first_word, second_word};
+
 fn main() {
     let s = String::from("Hello world");
     println!("first word: '{}'", first_word(&s));