This crate is part of the [`zng`](https://github.com/zng-ui/zng?tab=readme-ov-file#crates) project. ## Cargo Features This crate provides 2 feature flags, 1 enabled by default. #### `"debug_default"` Signal the build script to enable the `"dyn_*"` features in debug builds. *Enabled by default.* #### `"dyn_closure"` Box closures at opportune places, such as `Var::map`, reducing the number of monomorphised types. This speeds-up compilation time at the cost of runtime.