pub trait FeaturesModule: ContractBase + Sized {
// Required method
fn feature_flag(
&self,
feature_name: &FeatureName<Self::Api>,
) -> SingleValueMapper<Self::Api, u8>;
// Provided methods
fn check_feature_on(&self, feature_name: &'static [u8], default: bool) { ... }
fn set_feature_flag_endpoint(
&self,
feature_name: ManagedBuffer<Self::Api>,
value: bool,
) { ... }
}Expand description
This is a standard smart contract module, that when added to a smart contract offers feature flag capabilities.
It offers:
- an endpoint where the owner can turn features on/off
- a method to check if feature is on or not
- a macro to make calling this method even more compact
Required Methods§
fn feature_flag( &self, feature_name: &FeatureName<Self::Api>, ) -> SingleValueMapper<Self::Api, u8>
Provided Methods§
fn check_feature_on(&self, feature_name: &'static [u8], default: bool)
fn set_feature_flag_endpoint( &self, feature_name: ManagedBuffer<Self::Api>, value: bool, )
Dyn Compatibility§
This trait is not dyn compatible.
In older versions of Rust, dyn compatibility was called "object safety", so this trait is not object safe.