diff options
Diffstat (limited to 'src/backend/mod.rs')
| -rw-r--r-- | src/backend/mod.rs | 2 |
1 files changed, 1 insertions, 1 deletions
diff --git a/src/backend/mod.rs b/src/backend/mod.rs index bd5bc58..757703c 100644 --- a/src/backend/mod.rs +++ b/src/backend/mod.rs @@ -6,7 +6,7 @@ use crate::CollectionBuilder; use crate::ValueBuilder; /// A backend can be used to get builders for specific types -pub trait Backend { +pub trait Backend: Copy { fn bool_builder(&self) -> Box<dyn ValueBuilder<Output = bool>>; fn u8_builder(&self) -> Box<dyn ValueBuilder<Output = u8>>; fn u16_builder(&self) -> Box<dyn ValueBuilder<Output = u16>>; |