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Add comment explaining why WasmHash is implemented the way it is

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Mark McCaskey
2019-08-27 11:50:03 -07:00
parent 854b2013ea
commit 538bba5638
1 changed files with 3 additions and 0 deletions
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3
lib/runtime-core/src/cache.rs
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@ -35,6 +35,9 @@ impl From<io::Error> for Error {
/// ///
/// [`Cache`]: trait.Cache.html /// [`Cache`]: trait.Cache.html
#[derive(Debug, Copy, Clone, PartialEq, Eq, Hash, Serialize, Deserialize)] #[derive(Debug, Copy, Clone, PartialEq, Eq, Hash, Serialize, Deserialize)]
// WasmHash is made up of two 32 byte arrays instead of a 64 byte array
// because derive only works on fixed sized arrays size 32 or below
// TODO: fix this when this gets fixed by improved const generics
pub struct WasmHash([u8; 32], [u8; 32]); pub struct WasmHash([u8; 32], [u8; 32]);
impl WasmHash { impl WasmHash {