tutorial: add missing line to make example build.

rust-lang · Jan 6, 2014 · 8224816 · 8224816 · bors · Jan 6, 2014
1 parent 4f1ebef
commit 8224816
Showing 1 changed file with 1 addition and 0 deletions.
diff --git a/doc/tutorial.md b/doc/tutorial.md
@@ -2189,6 +2189,7 @@ printable, and that we wanted the implementation of `print` for those
 types to be exactly as it is for `int`, above:
 
 ~~~~
+# trait Printable { fn print(&self); }
 impl Printable for f32 {
     fn print(&self) { println!("{:?}", *self) }
 }