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Clarify how ApiId is being generated (#9519)

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* Clarify how `ApiId` is being generated

* Clarify more
This commit is contained in:
Bastian Köcher
2021-08-09 13:39:50 +02:00
committed by GitHub
parent 6e0cd5587d
commit 4503a722da
1 changed files with 5 additions and 0 deletions
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substrate/primitives/version/src/lib.rs
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@@ -98,6 +98,11 @@ pub mod embed;
pub use sp_version_proc_macro::runtime_version;
/// The identity of a particular API interface that the runtime might provide.
///
/// The id is generated by hashing the name of the runtime api with BLAKE2 using a hash size
/// of 8 bytes.
///
/// The name of the runtime api is the name of the trait when using `decl_runtime_apis!` macro.
pub type ApiId = [u8; 8];
/// A vector of pairs of `ApiId` and a `u32` for version.