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Modify doublemap syntax (#4576)

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* modify doublemap syntax

* Apply suggestions from code review

Co-Authored-By: Bastian Köcher <bkchr@users.noreply.github.com>

Co-authored-by: Bastian Köcher <bkchr@users.noreply.github.com>
This commit is contained in:
thiolliere
2020-01-10 11:52:56 +01:00
committed by Gavin Wood
parent 3d74b9b669
commit b74c88b3cc
15 changed files with 41 additions and 40 deletions
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substrate/frame/support/procedural/src/lib.rs
+3 -5
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@@ -117,7 +117,7 @@ use proc_macro::TokenStream;
/// Twox128(module_prefix) ++ Twox128(head_prefix)
/// ```
///
/// * Double map: `Foo: double_map hasher($hash1) u32, $hash2(u32) => u32`: Implements the
/// * Double map: `Foo: double_map hasher($hash1) u32, hasher($hash2) u32 => u32`: Implements the
/// [`StorageDoubleMap`](../frame_support/storage/trait.StorageDoubleMap.html) trait using the
/// [`StorageDoubleMap generator`](../frame_support/storage/generator/trait.StorageDoubleMap.html).
/// And [`StoragePrefixedMap`](../frame_support/storage/trait.StoragePrefixedMap.html).
@@ -126,10 +126,8 @@ use proc_macro::TokenStream;
/// [`Hashable`](../frame_support/trait.Hashable.html) trait. They must be choosen with care, see
/// generator documentation.
///
/// `hasher($hash)` is optional and its default is `blake2_256`.
///
/// `hasher($hash)` is optional and its default is `blake2_256`. One should use another hasher
/// with care, see generator documentation.
/// `hasher($hash1)` and `hasher($hash2) are optional and default to `blake2_256`.
/// One should use another hasher with care, see generator documentation.
///
/// If the first key is untrusted, a cryptographic `hasher` such as `blake2_256` must be used.
/// Otherwise, other values of all storage items can be compromised.