Module types

Common types of the pallet Common types and traits of the EPMB pallet group.

SolutionOf

This type is among the most cryptic used in the EPMB pallet. The origins of this type go back to the fact that sending a solution, with hundreds or thousands of account-ids in it would be too large for a chain to handle. This was particularly the case in a single page solution, as developed in election-provider-multi-phase. To combat this, a “compact” custom type is generated to encapsulate a solution. This type is generated by [frame_election_provider_support::generate_solution_type]. See the documentation of this macro for more information about the hacks used to reduce the size of the solution.

Consequently, the SolutionVoterIndexOf and SolutionTargetIndexOf and SolutionAccuracyOf are derived from this type.

Phase

This is the most important type of this pallet, demonstrating the state-machine used to manage the election process and its various phases.

Structs

ElectionResult

Final result of the election.

ElectionScore

The score of an election. This is the main measure of an election’s quality.

MaxFlattenedVoters

Maximum number of items that AllVoterPagesOf can contain, when flattened.

PagedRawSolution

A paginated raw solution type.

Enums

Phase

Current phase of the pallet.

Traits

NposSolution

An opaque index-based, NPoS solution type.

PadSolutionPages

Helper trait to pad a partial solution such that the leftover pages are filled with zero.

Pagify

A helper trait to deal with the page index of partial solutions.

Type Aliases

AllVoterPagesFlattenedOf

Same as AllVoterPagesOf, but instead of being a nested bounded vec, the entire voters are flattened into one outer, unbounded Vec type.

AllVoterPagesOf

Alias for all pages of voters, parameterized by this crate’s config.

AssignmentOf

The relative distribution of a voter’s stake among the winning targets.

FallbackErrorOf

The fallback election type.

PageIndex

A page index for the multi-block elections pagination.

SolutionAccuracyOf

The accuracy of the election, when submitted from offchain. Derived from SolutionOf.

SolutionOf

The solution type used by this crate.

SolutionTargetIndexOf

The target index. Derived from SolutionOf.

SolutionVoterIndexOf

The voter index. Derived from SolutionOf.

VoterOf

Alias for a voter, parameterized by the miner config.

VoterPageOf

Alias for a page of voters, parameterized by this crate’s config.