mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-06-28 17:57:25 +00:00
Gavin Wood
adba89913e
* Reformulate random seed to be more random - First 80 random values come from cycling the incomplete series ( instead of filling with zeroes) - Calculate random material each usage (use a single amalgamated ring buffer to store them for avoiding 81 lookups each time) - Mutate inputs by hashing each with: - its index (into the 81) - an additional "subject" key provided by caller This keeps the final output low-influence while still allowing it to be used as the seed to independent contexts. (Hashing the result to give the final seed is no better than using parent_hash). * Docs * Bump runtime * Update notes * Remove feature(alloc) * Update srml/system/src/lib.rs Co-Authored-By: gavofyork <github@gavwood.com>
53 lines
1.9 KiB
Rust
53 lines
1.9 KiB
Rust
// Copyright 2017-2019 Parity Technologies (UK) Ltd.
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// This file is part of Substrate.
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// Substrate is free software: you can redistribute it and/or modify
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// it under the terms of the GNU General Public License as published by
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// the Free Software Foundation, either version 3 of the License, or
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// (at your option) any later version.
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// Substrate is distributed in the hope that it will be useful,
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// but WITHOUT ANY WARRANTY; without even the implied warranty of
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// MERCHANTABILITY or FITNESS FOR A PARTICULAR PURPOSE. See the
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// GNU General Public License for more details.
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// You should have received a copy of the GNU General Public License
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// along with Substrate. If not, see <http://www.gnu.org/licenses/>.
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//! Lowest-abstraction level for the Substrate runtime: just exports useful primitives from std
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//! or core/alloc to be used with any code that depends on the runtime.
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#![cfg_attr(not(feature = "std"), no_std)]
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#![cfg_attr(not(feature = "std"), feature(core_intrinsics))]
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#![cfg_attr(feature = "std", doc = "Substrate runtime standard library as compiled when linked with Rust's standard library.")]
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#![cfg_attr(not(feature = "std"), doc = "Substrate's runtime standard library as compiled without Rust's standard library.")]
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#[macro_export]
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macro_rules! map {
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($( $name:expr => $value:expr ),*) => (
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vec![ $( ( $name, $value ) ),* ].into_iter().collect()
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)
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}
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#[cfg(feature = "std")]
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include!("../with_std.rs");
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#[cfg(not(feature = "std"))]
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include!("../without_std.rs");
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/// Prelude of common useful imports.
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///
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/// This should include only things which are in the normal std prelude.
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pub mod prelude {
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pub use crate::vec::Vec;
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pub use crate::boxed::Box;
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pub use crate::cmp::{Eq, PartialEq};
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pub use crate::clone::Clone;
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// Re-export `vec!` macro here, but not in `std` mode, since
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// std's prelude already brings `vec!` into the scope.
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#[cfg(not(feature = "std"))]
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pub use crate::vec;
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}
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