Trait sp_externalities::ExternalitiesExt

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

Extension for the Externalities trait.

Required methods

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

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: Any + Extension>(&mut self) -> Option<&mut T>

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