Trait EnsureInherentsAreFirst

pub trait EnsureInherentsAreFirst<Block: Block>: IsInherent<<Block as Block>::Extrinsic> {
    // Required method
    fn ensure_inherents_are_first(block: &Block) -> Result<u32, u32>;
}

A trait to ensure the inherent are before non-inherent in a block.

This is typically implemented on runtime, through construct_runtime!.

Required Methods

fn ensure_inherents_are_first(block: &Block) -> Result<u32, u32>

Ensure the position of inherent is correct, i.e. they are before non-inherents.

On error return the index of the inherent with invalid position (counting from 0). On success it returns the index of the last inherent. 0 therefore means that there are no inherents.

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.

Implementors