Add support for Vec<T>

Signed-off-by: Matthias Beyer <mail@beyermatthias.de>

1 files changed, 6 insertions, 0 deletions

diff --git a/src/backend/mod.rs b/src/backend/mod.rs
index dfd77c8..1353a6d 100644
--- a/src/backend/mod.rs
+++ b/src/backend/mod.rs
@@ -1,6 +1,8 @@
 pub mod dialoguer;
 
 use crate::ValueBuilder;
+use crate::BuildableValue;
+use crate::CollectionBuilder;
 
 /// A backend can be used to get builders for specific types
 pub trait Backend {
@@ -23,6 +25,10 @@ pub trait Backend {
     fn f64_builder(&self)    -> Box<dyn ValueBuilder<Output = f64, Error = Self::Error>>;
     fn char_builder(&self)   -> Box<dyn ValueBuilder<Output = char, Error = Self::Error>>;
     fn string_builder(&self) -> Box<dyn ValueBuilder<Output = String, Error = Self::Error>>;
+
+    fn vec_builder<T>(&self) -> Box<dyn CollectionBuilder<Output = Vec<T>, Error = Self::Error>>
+        where T: 'static + BuildableValue
+            ;
 }