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954150f3b5
Some traits are already included in the 2021 prelude and so shouldn't be needed to use explicitly: use `convert::TryFrom`, `convert::TryInto`, and `iter::FromIterator` are removed. ( https://doc.rust-lang.org/core/prelude/rust_2021/ ) No breaking changes or change of functionality, so I think no PR doc is needed in this case. (Motivation: Removes some references to `sp-std`)
Transaction Payment Pallet
This pallet provides the basic logic needed to pay the absolute minimum amount needed for a transaction to be included. This includes:
- weight fee: A fee proportional to amount of weight a transaction consumes.
- length fee: A fee proportional to the encoded length of the transaction.
- tip: An optional tip. Tip increases the priority of the transaction, giving it a higher chance to be included by the transaction queue.
Additionally, this pallet allows one to configure:
- The mapping between one unit of weight to one unit of fee via [
Config::WeightToFee]. - A means of updating the fee for the next block, via defining a multiplier, based on the
final state of the chain at the end of the previous block. This can be configured via
[
Config::FeeMultiplierUpdate]
License: Apache-2.0