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Improve fees module (#1821)

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* remove amount associated
* make a new trait to bound some arithmetics to balances or assets:
  It also remove arithmetic bounds of srml-support::traits::Currency.

  To update your code then use srml_support::traits::ArithmeticType like:
  `type Currency: ArithmeticType + Currency<Self::AccountId, Balance=BalanceOf<Self>>; ` 
  with `type BalanceOf<T> = <<T as Trait>::Currency as ArithmeticType>::Type; `

* improve decl_storage when it explicit serde bound: basically don't try to be smarter than rust and just use where clause.
This commit is contained in:
thiolliere
2019-02-19 17:13:59 +01:00
committed by GitHub
parent 9a2f1b2007
commit 8065116ba5
16 changed files with 48 additions and 100 deletions
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substrate/srml/democracy/src/lib.rs
+3 -3
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@@ -24,7 +24,7 @@ use primitives::traits::{Zero, As};
use parity_codec_derive::{Encode, Decode};
use srml_support::{StorageValue, StorageMap, Parameter, Dispatchable, IsSubType};
use srml_support::{decl_module, decl_storage, decl_event, ensure};
use srml_support::traits::{Currency, OnFreeBalanceZero, EnsureAccountLiquid};
use srml_support::traits::{Currency, OnFreeBalanceZero, EnsureAccountLiquid, ArithmeticType};
use srml_support::dispatch::Result;
use system::ensure_signed;
@@ -65,10 +65,10 @@ impl Vote {
}
}
type BalanceOf<T> = <<T as Trait>::Currency as Currency<<T as system::Trait>::AccountId>>::Balance;
type BalanceOf<T> = <<T as Trait>::Currency as ArithmeticType>::Type;
pub trait Trait: system::Trait + Sized {
type Currency: Currency<<Self as system::Trait>::AccountId>;
type Currency: ArithmeticType + Currency<<Self as system::Trait>::AccountId, Balance=BalanceOf<Self>>;
type Proposal: Parameter + Dispatchable<Origin=Self::Origin> + IsSubType<Module<Self>>;