1 files changed, 29 insertions, 0 deletions
diff --git a/meap/meap-code/ch3/ch3-defining-files-neatly.rs b/meap/meap-code/ch3/ch3-defining-files-neatly.rs
new file mode 100644
index 0000000..2025f72
--- /dev/null
+++ b/meap/meap-code/ch3/ch3-defining-files-neatly.rs
@@ -0,0 +1,29 @@
+#[derive(Debug)]
+struct File {
+  name: String,
+  data: Vec<u8>,
+}
+
+impl File {
+  fn new(name: &str) -> File { // <1> As `File::new()` is a completely normal function--rather than something blessed by the language--we need to tell Rust that it will be returning a `File` from this function
+    File {                      // <2>
+      name: String::from(name), // <2> `File::new()` does little more than encapsulate the object creation syntax 
+      data: Vec::new(),         // <2>
+    }
+  }
+  
+  // fn len(&self) -> usize {  // <3> `File::len()` takes an implicit argument `self`. You'll notice that there is no explicit argument provided on line 25. 
+  //   self.data.len() // <4> `usize` is the type returned by `Vec<T>::len()`, which is sent directly through to the caller
+  // }
+}
+
+fn main() {
+  let f3 = File::new("f3.txt");
+  
+  let f3_name = &f3.name; // <5> Fields are private by default, but can be accessed within the module that defines the struct. The module system is discussed further on in the chapter. 
+ //let f3_length = f3.len();
+ let f3_length = f3.data.len();
+  
+  println!("{:?}", f3);
+  println!("{} is {} bytes long", f3_name, f3_length);
+}
+\ No newline at end of file