Started Rust in Action MEAP.

1 files changed, 38 insertions, 0 deletions

diff --git a/meap/meap-code/ch3/ch3-file-doced.rs b/meap/meap-code/ch3/ch3-file-doced.rs
new file mode 100644
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+++ b/meap/meap-code/ch3/ch3-file-doced.rs
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+//! Simulating files one step at a time.

+

+/// Represents a "file", which probably lives on a file system.

+#[derive(Debug)]

+pub struct File {

+  name: String,

+  data: Vec<u8>,

+}

+

+impl File {

+  /// New files are assumed to be empty, but a name is required.

+  pub fn new(name: &str) -> File {

+    File {

+      name: String::from(name),

+      data: Vec::new(),

+    }

+  }

+  

+  pub fn len(&self) -> usize {

+    //! Returns the file's length in bytes.

+    self.data.len()

+  }

+  

+  pub fn name(&self) -> String {

+    //! Returns the file's name.

+    self.name.clone()

+  }

+}

+

+fn main() {

+  let f1 = File::new("f1.txt");

+  

+  let f1_name = f1.name();

+  let f1_length = f1.len();

+  

+  println!("{:?}", f1);

+  println!("{} is {} bytes long", f1_name, f1_length);

+}
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