1 files changed, 15 insertions, 0 deletions
diff --git a/src/callback.rs b/src/callback.rs
new file mode 100644
index 0000000..c62ebf8
--- /dev/null
+++ b/src/callback.rs
@@ -0,0 +1,15 @@
+pub struct Callback<A: Sized + Send> {
+    items: Vec<fn(A)>
+}
+
+impl<A: Sized + Clone + Send> Callback<A> {
+    pub fn new() -> Callback<A> {
+        Callback { items: Vec::new() }
+    }
+    pub fn register(&mut self, f: &fn(A)) {
+        self.items.push(*f)
+    }
+    pub fn fire(&self, v: &A) {
+        for _ in self.items.iter().map(|&c| c(v.clone())) {}
+    }
+}