Merge branch 'vec-example'

1 files changed, 21 insertions, 0 deletions

diff --git a/src/buildable.rs b/src/buildable.rs
index 22f6d0a..95382e7 100644
--- a/src/buildable.rs
+++ b/src/buildable.rs
@@ -1,4 +1,5 @@
 use crate::ValueBuilder;
+use crate::CollectionBuilder;
 use crate::Backend;
 
 // A value that can be built interactively, using a Backend
@@ -162,3 +163,23 @@ impl BuildableValue for String {
     }
 }
 
+
+
+pub trait BuildableCollection {
+    fn builder<E, B>(backend: B) -> Box<dyn CollectionBuilder<Output = Self, Error = E>>
+        where E: Sized,
+              B: Backend<Error = E>
+        ;
+}
+
+impl<T> BuildableCollection for Vec<T>
+    where T: 'static + BuildableValue
+{
+    fn builder<E, B>(backend: B) -> Box<dyn CollectionBuilder<Output = Self, Error = E>>
+        where E: Sized,
+              B: Backend<Error = E>
+    {
+        backend.vec_builder::<T>()
+    }
+}
+