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Introduce set function into storage maps (#11564)

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Gavin Wood
2022-06-01 10:48:42 +01:00
committed by GitHub
parent 5595f10245
commit d6ea0e4205
8 changed files with 57 additions and 0 deletions
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substrate/frame/support/src/storage/mod.rs
+9
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@@ -167,6 +167,9 @@ pub trait StorageMap<K: FullEncode, V: FullCodec> {
/// Load the value associated with the given key from the map.
fn get<KeyArg: EncodeLike<K>>(key: KeyArg) -> Self::Query;
/// Store or remove the value to be associated with `key` so that `get` returns the `query`.
fn set<KeyArg: EncodeLike<K>>(key: KeyArg, query: Self::Query);
/// Try to get the value for the given key from the map.
///
/// Returns `Ok` if it exists, `Err` if not.
@@ -481,6 +484,9 @@ pub trait StorageDoubleMap<K1: FullEncode, K2: FullEncode, V: FullCodec> {
KArg1: EncodeLike<K1>,
KArg2: EncodeLike<K2>;
/// Store or remove the value to be associated with `key` so that `get` returns the `query`.
fn set<KArg1: EncodeLike<K1>, KArg2: EncodeLike<K2>>(k1: KArg1, k2: KArg2, query: Self::Query);
/// Take a value from storage, removing it afterwards.
fn take<KArg1, KArg2>(k1: KArg1, k2: KArg2) -> Self::Query
where
@@ -657,6 +663,9 @@ pub trait StorageNMap<K: KeyGenerator, V: FullCodec> {
/// Returns `Ok` if it exists, `Err` if not.
fn try_get<KArg: EncodeLikeTuple<K::KArg> + TupleToEncodedIter>(key: KArg) -> Result<V, ()>;
/// Store or remove the value to be associated with `key` so that `get` returns the `query`.
fn set<KArg: EncodeLikeTuple<K::KArg> + TupleToEncodedIter>(key: KArg, query: Self::Query);
/// Swap the values of two keys.
fn swap<KOther, KArg1, KArg2>(key1: KArg1, key2: KArg2)
where