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HyperCube Coding Guidelines

The objective of these recommendations is to increase developer productivity by providing the ability to navigate the code quickly, without the necessity of adapting to inconsistency in coding. The code should look like it was made by a single person. Even if you disagree with the convention, you can just patch this document with a PR and we can talk about it. Once the PR is finalized, all the code should be modified to match the new conventions as quickly as possible.

Rust coding conventions

  • All Rust code is formatted using the latest version of rustfmt. Once installed, it will be updated automatically when you update the compiler with rustup.

  • All Rust code is linted with Clippy. If you'd prefer to ignore its advice, do so explicitly:

    #[cfg_attr(feature = "cargo-clippy", allow(too_many_arguments))]

    Note: Clippy defaults can be overridden in the top-level file .clippy.toml.

  • For variable names, when in doubt, spell it out. The mapping from type names to variable names is to lowercase the type name, putting an underscore before each capital letter. Variable names should not be abbreviated unless being used as closure arguments and the brevity improves readability. When a function has multiple instances of the same type, qualify each with a prefix and underscore (i.e. alice_keypair) or a numeric suffix (i.e. tx0).

  • For function and method names, use <verb>_<subject>. For unit tests, that verb should always be test and for benchmarks the verb should always be bench. Avoid namespacing function names with some arbitrary word. Avoid abreviating words in function names.

  • As they say, "When in Rome, do as the Romans do." A good patch should acknowledge the coding conventions of the code that surrounds it, even in the case where that code has not yet been updated to meet the conventions described here.

Terminology

Inventing new terms is allowed, but should only be done when the term is widely used and understood. Avoid introducing new 3-letter terms, which can be confused with 3-letter acronyms.

Some terms we currently use regularly in the codebase:

  • fullnode: n. A fully participating network node.
  • hash: n. A SHA-256 Hash.
  • keypair: n. A Ed25519 key-pair, containing a public and private key.
  • pubkey: n. The public key of a Ed25519 key-pair.
  • sigverify: v. To verify a Ed25519 digital signature.