Keith Yeung
845e6a5ff1
* Add methods to PrefixIterator to support iterating from a specific key * Expose the decode functions used in iterators for storage maps * Use associated decode function in tests * Revert "Expose the decode functions used in iterators for storage maps" This reverts commit 34f57d92db89646d0c98ea1880df58d58e523b09. * Fix documentation for next_key * Add API for iterating from a specified key for all storage map types * Enhance pagination test * Add API methods to storage map types * Rename next_key to last_key * Rename last_key to last_raw_key * Specify that iteration starts after starting_raw_key * Update documentation on iteration ordering * Rename next_key to previous_key * Enhance pagination unit test * Create unit tests for all kinds of iter_from methods * Define iter_from in terms of iter rather than vice versa * Cargo fmt
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.