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impl iter_prefix on doublemap (#4388)

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thiolliere
2019-12-17 06:41:25 +01:00
committed by Gavin Wood
parent 7e3872c064
commit 583b0e3c69
2 changed files with 45 additions and 0 deletions
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substrate/frame/support/src/storage/mod.rs
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@@ -305,6 +305,9 @@ pub trait StorageDoubleMap<K1: FullEncode, K2: FullEncode, V: FullCodec> {
fn remove_prefix<KArg1>(k1: KArg1) where KArg1: ?Sized + EncodeLike<K1>;
fn iter_prefix<KArg1>(k1: KArg1) -> PrefixIterator<V>
where KArg1: ?Sized + EncodeLike<K1>;
fn mutate<KArg1, KArg2, R, F>(k1: KArg1, k2: KArg2, f: F) -> R
where
KArg1: EncodeLike<K1>,