* Implement StorageNMap * Change copyright date to 2021 * Rewrite keys to use impl_for_tuples instead of recursion * Implement prefix iteration on StorageNMap * Implement EncodeLike for key arguments * Rename KeyGenerator::Arg to KeyGenerator::KArg * Support StorageNMap in decl_storage and #[pallet::storage] macros * Use StorageNMap in assets pallet * Support migrate_keys in StorageNMap * Reduce line characters on select files * Refactor crate imports in decl_storage macros * Some more line char reductions and doc comment update * Update UI test expectations * Revert whitespace changes to untouched files * Generate Key struct instead of a 1-tuple when only 1 pair of key and hasher is provided * Revert formatting changes to unrelated files * Introduce KeyGeneratorInner * Add tests for StorageNMap in FRAMEv2 pallet macro * Small fixes to unit tests for StorageNMap * Bump runtime metadata version * Remove unused import * Update tests to use runtime metadata v13 * Introduce and use EncodeLikeTuple as a trait bound for KArg * Add some rustdocs * Revert usage of StorageNMap in assets pallet * Make use of ext::PunctuatedTrailing * Add rustdoc for final_hash * Fix StorageNMap proc macro expansions for single key cases * Create associated const in KeyGenerator for hasher metadata * Refactor code according to comments from Basti * Add module docs for generator/nmap.rs * Re-export storage::Key as NMapKey in pallet prelude * Seal the EncodeLikeTuple trait * Extract sealing code out of key.rs Co-authored-by: Shawn Tabrizi <shawntabrizi@gmail.com>
Substrate ·

Substrate is a next-generation framework for blockchain innovation 🚀.
Trying it out
Simply go to substrate.dev and follow the installation instructions. You can also try out one of the tutorials.
Contributions & Code of Conduct
Please follow the contributions guidelines as outlined in docs/CONTRIBUTING.adoc. In all communications and contributions, this project follows the Contributor Covenant Code of Conduct.
Security
The security policy and procedures can be found in docs/SECURITY.md.
License
- Substrate Primitives (
sp-*), Frame (frame-*) and the pallets (pallets-*), binaries (/bin) and all other utilities are licensed under Apache 2.0. - Substrate Client (
/client/*/sc-*) is licensed under GPL v3.0 with a classpath linking exception.
The reason for the split-licensing is to ensure that for the vast majority of teams using Substrate to create feature-chains, then all changes can be made entirely in Apache2-licensed code, allowing teams full freedom over what and how they release and giving licensing clarity to commercial teams.
In the interests of the community, we require any deeper improvements made to Substrate's core logic (e.g. Substrate's internal consensus, crypto or database code) to be contributed back so everyone can benefit.
