X-Git-Url: https://git.ralfj.de/rust-101.git/blobdiff_plain/2d40516a8393db1f27bb822ff95c71a1a9c82537..ab7f9b241429bd675b437d2437799de75d2f409b:/workspace/src/part11.rs?ds=sidebyside

diff --git a/workspace/src/part11.rs b/workspace/src/part11.rs
deleted file mode 100644
index a93ad07..0000000
--- a/workspace/src/part11.rs
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@@ -1,65 +0,0 @@
-// Rust-101, Part 11: Trait Objects, Box, Lifetime bounds
-// ======================================================
-
-
-// For now, we just decide that the callbacks have an argument of type `i32`.
-struct CallbacksV1<F: FnMut(i32)> {
-    callbacks: Vec<F>,
-}
-
-/* struct CallbacksV2 {
-    callbacks: Vec<FnMut(i32)>,
-} */
-
-pub struct Callbacks {
-    callbacks: Vec<Box<FnMut(i32)>>,
-}
-
-impl Callbacks {
-    // Now we can provide some functions. The constructor should be straight-forward.
-    pub fn new() -> Self {
-        unimplemented!()
-    }
-
-    // Registration simply stores the callback.
-    pub fn register(&mut self, callback: Box<FnMut(i32)>) {
-        self.callbacks.push(callback);
-    }
-
-    // We can also write a generic version of `register`, such that it will be instantiated with some concrete closure type `F`
-    // and do the creation of the `Box` and the conversion from `F` to `FnMut(i32)` itself.
-    
-    pub fn register_generic<F: FnMut(i32)+'static>(&mut self, callback: F) {
-        unimplemented!()
-    }
-
-    // And here we call all the stored callbacks.
-    pub fn call(&mut self, val: i32) {
-        // Since they are of type `FnMut`, we need to mutably iterate.
-        for callback in self.callbacks.iter_mut() {
-            unimplemented!()
-        }
-    }
-}
-
-// Now we are ready for the demo. Remember to edit `main.rs` to run it.
-pub fn main() {
-    let mut c = Callbacks::new();
-    c.register(Box::new(|val| println!("Callback 1: {}", val)));
-    c.call(0);
-
-    {
-        let mut count: usize = 0;
-        c.register_generic(move |val| {
-            count = count+1;
-            println!("Callback 2: {} ({}. time)", val, count);
-        } );
-    }
-    c.call(1); c.call(2);
-}
-
-
-// **Exercise 11.1**: We made the arbitrary choice of using `i32` for the arguments. Generalize the data structures above
-// to work with an arbitrary type `T` that's passed to the callbacks. Since you need to call multiple callbacks with the
-// same `t: T`, you will either have to restrict `T` to `Copy` types, or pass a reference.
-