Trait sp_core::traits::ExternalitiesExt

pub trait ExternalitiesExt {
    fn extension<T>(&mut self) -> Option<&mut T>
    where
        T: Extension + Any;
}

Extension for the Externalities trait.

Required methods

fn extension<T>(&mut self) -> Option<&mut T> where
    T: Extension + Any, 

Tries to find a registered extension and returns a mutable reference.

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Implementors

impl<'_> ExternalitiesExt for &'_ mut (dyn Externalities + '_)

fn extension<T>(&mut self) -> Option<&mut T> where
    T: Extension + Any, 

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