Trait frame_support::traits::ChangeMembers

pub trait ChangeMembers<AccountId: Clone + Ord> {
    fn change_members_sorted(
        incoming: &[AccountId], 
        outgoing: &[AccountId], 
        sorted_new: &[AccountId]
    );

    fn change_members(
        incoming: &[AccountId], 
        outgoing: &[AccountId], 
        new: Vec<AccountId>
    ) { ... }
    fn set_members_sorted(new_members: &[AccountId], old_members: &[AccountId]) { ... }
    fn compute_members_diff_sorted(
        new_members: &[AccountId], 
        old_members: &[AccountId]
    ) -> (Vec<AccountId>, Vec<AccountId>) { ... }
    fn set_prime(_prime: Option<AccountId>) { ... }
    fn get_prime() -> Option<AccountId> { ... }
}

Trait for type that can handle incremental changes to a set of account IDs.

Required methods

fn change_members_sorted(
    incoming: &[AccountId],
    outgoing: &[AccountId],
    sorted_new: &[AccountId]
)

A number of members _incoming just joined the set and replaced some _outgoing ones. The new set is thus given by sorted_new and must be sorted.

NOTE: This is the only function that needs to be implemented in ChangeMembers.

This resets any previous value of prime.

Provided methods

fn change_members(
    incoming: &[AccountId],
    outgoing: &[AccountId],
    new: Vec<AccountId>
)

A number of members incoming just joined the set and replaced some outgoing ones. The new set is given by new, and need not be sorted.

This resets any previous value of prime.

fn set_members_sorted(new_members: &[AccountId], old_members: &[AccountId])

Set the new members; they must already be sorted. This will compute the diff and use it to call change_members_sorted.

This resets any previous value of prime.

fn compute_members_diff_sorted(
    new_members: &[AccountId],
    old_members: &[AccountId]
) -> (Vec<AccountId>, Vec<AccountId>)

Compute diff between new and old members; they must already be sorted.

Returns incoming and outgoing members.

fn set_prime(_prime: Option<AccountId>)

Set the prime member.

fn get_prime() -> Option<AccountId>

Get the current prime.

Implementations on Foreign Types

impl<T: Clone + Ord> ChangeMembers<T> for ()

fn change_members(_: &[T], _: &[T], _: Vec<T>)

fn change_members_sorted(_: &[T], _: &[T], _: &[T])

fn set_members_sorted(_: &[T], _: &[T])

fn set_prime(_: Option<T>)

Implementors