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Use storage::append in the implementation of the storage types (#5889)

Browse Source 
* Start improving `storage_append`

* Fix some stuff

* Fix compilation

* Update docs and add new test

* More tests

* Test kill + append
This commit is contained in:
Bastian Köcher
2020-05-05 15:09:07 +02:00
committed by GitHub
parent be0c7b9340
commit bc9707b4c5
19 changed files with 252 additions and 362 deletions
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substrate/primitives/io/src/lib.rs
+8 -1
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@@ -117,7 +117,14 @@ pub trait Storage {
Externalities::clear_prefix(*self, prefix)
}
/// Append to storage item (assumes it is in "Vec" format).
/// Append the encoded `value` to the storage item at `key`.
///
/// The storage item needs to implement [`EncodeAppend`](codec::EncodeAppend).
///
/// # Warning
///
/// If the storage item does not support [`EncodeAppend`](codec::EncodeAppend) or
/// something else fails at appending, the storage item will be set to `[value]`.
fn append(&mut self, key: &[u8], value: Vec<u8>) {
self.storage_append(key.to_vec(), value);
}