Move helper functions into src/lib.rs

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

diff --git a/src/main.rs b/src/main.rs
index c07c4051165861365a2176a3c1edec6957d16903..718ecb5f22028762b437c4b87a60dac13f99c90c 100644 (file)
--- a/src/main.rs
+++ b/src/main.rs
@@ -1,9 +1,11 @@
 mod word_utils;
+mod lib;
 
 use std::collections::HashMap;
 use std::io::{prelude::*, ErrorKind};
 use std::fs::{self, File};
 
+use lib::*;
 use word_utils::{first_word, second_word};
 
 fn test_strings() {
@@ -69,13 +71,6 @@ fn test_hashmaps() {
     println!("collect_scores after rebuilding with doubling: {:?}", collect_scores);
 }
 
-fn read_file(path: &str) -> Result<String, std::io::Error> {
-    let mut s = String::new();
-    File::open(path)?
-        .read_to_string(&mut s)?;
-    Ok(s)
-}
-
 fn test_files() {
     if let Ok(mut f) = File::open("Cargo.toml") {
         let mut contents = String::new();
@@ -116,9 +111,36 @@ fn test_files() {
     }
 }
 
+fn test_generics() {
+    let num_list = vec![3, 42, -7, 100, 0];
+    println!("largest number: {}", largest(&num_list));
+    println!("num_list: {:?}", num_list);
+
+    let char_list = vec!['a', 'y', 'q', 'm'];
+    println!("largest char: {}", largest(&char_list));
+
+    let str_list = vec!["hello", "world", "blue", "planet"];
+    println!("largest str: {}", largest(&str_list));
+    println!("str_list: {:?}", str_list);
+
+    let string_list = vec!["aaaa".to_string(), "xxxxx".to_string(), "ffff".to_string()];
+    println!("largest string (with cloning): {}", largest_clone(&string_list));
+    println!("largest string (with ref): {}", largest_ref(&string_list));
+    println!("string_list: {:?}", string_list);
+
+    let s1 = String::from("abcd");
+    let l;
+    {
+        let s2 = "efghi";
+        l = longest(&s1, s2);
+    }
+    println!("longest string: {}", l);
+}
+
 fn main() {
     test_strings();
     test_vectors();
     test_hashmaps();
     test_files();
+    test_generics();
 }