update at 2020-06-16 18:18:40 by ehlxr

src/main.rs

@@ -951,15 +951,18 @@ fn main() {
                        // println!("{} {} {}", s1, s3, s2);
     println!("{} {}", s3, s2);
 
-    for c in "नमˑे".chars() {
-        println!("{}", c);
+    let hello = "测试中文字符串";
+    for c in hello.chars() {
+        print!("{} ", c);
     }
-    for b in "नमˑे".bytes() {
-        println!("{}", b);
+    println!("");
+    for b in hello.bytes() {
+        print!("{} ", b);
     }
-    let hello = "Здравствуйте";
-    let s = &hello[0..4];
-    println!("&hello[0..4]={}", s);
+    println!("");
+    // let s = hello[1]; // Rust 的字符串不支持索引
+    // let s = &hello[0..4]; // thread 'main' panicked at 'byte index 4 is not a char boundary; it is inside '试' (bytes 3..6) of `测试中文字符串`', src/libcore/str/mod.rs:2219:5
+    print!("{}", &hello[0..3]);
 }
 
 fn test_tuple(t: (i32, &str)) {