Update match-expressions.md

src/control-flow/match-expressions.md

@@ -5,13 +5,16 @@ that sense, it works like a series of `if let` expressions:
 
 ```rust,editable
 fn main() {
-    match std::env::args().next().as_deref() {
-        Some("cat") => println!("Will do cat things"),
-        Some("ls")  => println!("Will ls some files"),
-        Some("mv")  => println!("Let's move some files"),
-        Some("rm")  => println!("Uh, dangerous!"),
-        None        => println!("Hmm, no program name?"),
-        _           => println!("Unknown program name!"),
+    let args: Vec<String> = std::env::args().collect();
+
+    for s in &args[1..] {
+        match &s[..] {
+            "cat" => println!("Will do cat things"),
+            "ls" => println!("Will ls some files"),
+            "mv" => println!("Let's move some files"),
+            "rm" => println!("Uh, dangerous!"),
+            _ => println!("Unknown program name!"),
+        }
     }
 }
 ```