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| author | Adam Carpenter <53hornet@gmail.com> | 2019-03-27 15:32:37 -0400 |
|---|---|---|
| committer | Adam Carpenter <53hornet@gmail.com> | 2019-03-27 15:32:37 -0400 |
| commit | 67cdcc2e12118becb823e20a40cc2687f2b8425a (patch) | |
| tree | ed92c3234b89079e6d4cf36f5e80c5ffa79def48 /meap/meap-code/ch3/ch3-skeleton-read-trait.rs | |
| parent | e25482fca375d318a39c3b54db396b0db6e0b263 (diff) | |
| download | learning-rust-67cdcc2e12118becb823e20a40cc2687f2b8425a.tar.xz learning-rust-67cdcc2e12118becb823e20a40cc2687f2b8425a.zip | |
Started Rust in Action MEAP.
Diffstat (limited to 'meap/meap-code/ch3/ch3-skeleton-read-trait.rs')
| -rw-r--r-- | meap/meap-code/ch3/ch3-skeleton-read-trait.rs | 21 |
1 files changed, 21 insertions, 0 deletions
diff --git a/meap/meap-code/ch3/ch3-skeleton-read-trait.rs b/meap/meap-code/ch3/ch3-skeleton-read-trait.rs new file mode 100644 index 0000000..9189bef --- /dev/null +++ b/meap/meap-code/ch3/ch3-skeleton-read-trait.rs @@ -0,0 +1,21 @@ +#![allow(unused_variables)]
+
+#[derive(Debug)]
+struct File;
+
+trait Read {
+ fn read(self: &Self, save_to: &mut Vec<u8>) -> Result<usize, String>;
+}
+
+impl Read for File {
+ fn read(self: &File, save_to: &mut Vec<u8>) -> Result<usize, String> {
+ Ok(0)
+ }
+}
+
+fn main() {
+ let f = File{};
+ let mut buffer = vec!();
+ let n_bytes = f.read(&mut buffer).unwrap();
+ println!("{} byte(s) read from {:?}", n_bytes, f);
+}
\ No newline at end of file |