mdBook generated from gitorial

src/0/source/changes.diff

@@ -1,6 +1,6 @@
 diff --git a/.gitignore b/.gitignore
 new file mode 100644
-index 00000000..c537f0b6
+index 0000000..c537f0b
 --- /dev/null
 +++ b/.gitignore
 @@ -0,0 +1,5 @@

src/1/source/changes.diff

@@ -1,6 +1,6 @@
 diff --git a/Cargo.lock b/Cargo.lock
 new file mode 100644
-index 00000000..31cbe7df
+index 0000000..31cbe7d
 --- /dev/null
 +++ b/Cargo.lock
 @@ -0,0 +1,3624 @@
@@ -3630,7 +3630,7 @@ index 00000000..31cbe7df
 +]
 diff --git a/Cargo.toml b/Cargo.toml
 new file mode 100644
-index 00000000..293d4f2a
+index 0000000..293d4f2
 --- /dev/null
 +++ b/Cargo.toml
 @@ -0,0 +1,26 @@
@@ -3662,7 +3662,7 @@ index 00000000..293d4f2a
 +try-runtime = []
 diff --git a/rustfmt.toml b/rustfmt.toml
 new file mode 100644
-index 00000000..cf9aa251
+index 0000000..cf9aa25
 --- /dev/null
 +++ b/rustfmt.toml
 @@ -0,0 +1,24 @@
@@ -3692,7 +3692,7 @@ index 00000000..cf9aa251
 +wrap_comments = true
 diff --git a/src/impls.rs b/src/impls.rs
 new file mode 100644
-index 00000000..03abf99e
+index 0000000..03abf99
 --- /dev/null
 +++ b/src/impls.rs
 @@ -0,0 +1,9 @@
@@ -3707,7 +3707,7 @@ index 00000000..03abf99e
 +}
 diff --git a/src/lib.rs b/src/lib.rs
 new file mode 100644
-index 00000000..ae8a09bc
+index 0000000..ae8a09b
 --- /dev/null
 +++ b/src/lib.rs
 @@ -0,0 +1,38 @@
@@ -3751,7 +3751,7 @@ index 00000000..ae8a09bc
 +}
 diff --git a/src/tests.rs b/src/tests.rs
 new file mode 100644
-index 00000000..375cd3f4
+index 0000000..375cd3f
 --- /dev/null
 +++ b/src/tests.rs
 @@ -0,0 +1,97 @@

src/10/source/README.md

@@ -29,7 +29,7 @@ These properties make hash functions key for ensuring data integrity and uniquen
 
 Due to the properties of a Hash, it is often referred to as a fingerprint.
 
-For context, a 32-byte hash has 2^32 different possible outputs. This nearly as many atoms as there are in the whole universe!
+For context, a 32-byte hash has 2^32 different possible outputs. This is nearly as many atoms as there are in the whole universe!
 
 This uniqueness property helps blockchain nodes come to consensus with one another.
 

src/11/solution/solution.diff

@@ -1,5 +1,5 @@
 diff --git a/src/lib.rs b/src/lib.rs
-index 7d88fffb..90242f63 100644
+index 7d88fff..90242f6 100644
 --- a/src/lib.rs
 +++ b/src/lib.rs
 @@ -18,11 +18,8 @@ pub mod pallet {
@@ -17,10 +17,10 @@ index 7d88fffb..90242f63 100644
  	#[pallet::event]
  	#[pallet::generate_deposit(pub(super) fn deposit_event)]
 diff --git a/src/tests.rs b/src/tests.rs
-index 8fa3dc60..d3e7ab78 100644
+index 8fa3dc6..e271b01 100644
 --- a/src/tests.rs
 +++ b/src/tests.rs
-@@ -117,3 +117,15 @@ fn create_kitty_emits_event() {
+@@ -117,3 +117,17 @@ fn create_kitty_emits_event() {
  		System::assert_last_event(Event::<TestRuntime>::Created { owner: 1 }.into());
  	})
  }
@@ -34,5 +34,7 @@ index 8fa3dc60..d3e7ab78 100644
 +		CountForKitties::<TestRuntime>::set(Some(1337u32));
 +		// You can `put` the value directly with a `u32`.
 +		CountForKitties::<TestRuntime>::put(1337u32);
++		// Check that the value is now in storage.
++		assert_eq!(CountForKitties::<TestRuntime>::get(), Some(1337u32));
 +	})
 +}

src/11/solution/src/tests.rs

@@ -127,5 +127,7 @@ fn count_for_kitties_created_correctly() {
 		CountForKitties::<TestRuntime>::set(Some(1337u32));
 		// You can `put` the value directly with a `u32`.
 		CountForKitties::<TestRuntime>::put(1337u32);
+		// Check that the value is now in storage.
+		assert_eq!(CountForKitties::<TestRuntime>::get(), Some(1337u32));
 	})
 }

src/11/template/template.diff

@@ -1,5 +1,5 @@
 diff --git a/src/lib.rs b/src/lib.rs
-index ae8a09bc..7d88fffb 100644
+index ae8a09b..7d88fff 100644
 --- a/src/lib.rs
 +++ b/src/lib.rs
 @@ -18,6 +18,12 @@ pub mod pallet {

src/12/solution/solution.diff

@@ -1,5 +1,5 @@
 diff --git a/src/impls.rs b/src/impls.rs
-index b396f986..97393307 100644
+index b396f98..9739330 100644
 --- a/src/impls.rs
 +++ b/src/impls.rs
 @@ -3,12 +3,9 @@ use frame::prelude::*;
@@ -19,11 +19,11 @@ index b396f986..97393307 100644
  		Ok(())
  	}
 diff --git a/src/tests.rs b/src/tests.rs
-index d3e7ab78..6318ca0b 100644
+index e271b01..08f81b9 100644
 --- a/src/tests.rs
 +++ b/src/tests.rs
-@@ -129,3 +129,15 @@ fn count_for_kitties_created_correctly() {
- 		CountForKitties::<TestRuntime>::put(1337u32);
+@@ -131,3 +131,15 @@ fn count_for_kitties_created_correctly() {
+ 		assert_eq!(CountForKitties::<TestRuntime>::get(), Some(1337u32));
  	})
  }
 +

src/12/solution/src/tests.rs

@@ -127,6 +127,8 @@ fn count_for_kitties_created_correctly() {
 		CountForKitties::<TestRuntime>::set(Some(1337u32));
 		// You can `put` the value directly with a `u32`.
 		CountForKitties::<TestRuntime>::put(1337u32);
+		// Check that the value is now in storage.
+		assert_eq!(CountForKitties::<TestRuntime>::get(), Some(1337u32));
 	})
 }
 

src/12/template/src/tests.rs

@@ -127,5 +127,7 @@ fn count_for_kitties_created_correctly() {
 		CountForKitties::<TestRuntime>::set(Some(1337u32));
 		// You can `put` the value directly with a `u32`.
 		CountForKitties::<TestRuntime>::put(1337u32);
+		// Check that the value is now in storage.
+		assert_eq!(CountForKitties::<TestRuntime>::get(), Some(1337u32));
 	})
 }

src/12/template/template.diff

@@ -1,5 +1,5 @@
 diff --git a/src/impls.rs b/src/impls.rs
-index 03abf99e..b396f986 100644
+index 03abf99..b396f98 100644
 --- a/src/impls.rs
 +++ b/src/impls.rs
 @@ -3,6 +3,12 @@ use frame::prelude::*;

src/13/solution/solution.diff

@@ -1,5 +1,5 @@
 diff --git a/src/impls.rs b/src/impls.rs
-index c550bc8d..7277e367 100644
+index c550bc8..7277e36 100644
 --- a/src/impls.rs
 +++ b/src/impls.rs
 @@ -4,8 +4,7 @@ use frame::prelude::*;
@@ -13,7 +13,7 @@ index c550bc8d..7277e367 100644
  		Self::deposit_event(Event::<T>::Created { owner });
  		Ok(())
 diff --git a/src/lib.rs b/src/lib.rs
-index 8edcc9b7..2c11f460 100644
+index 8edcc9b..2c11f46 100644
 --- a/src/lib.rs
 +++ b/src/lib.rs
 @@ -29,9 +29,7 @@ pub mod pallet {
@@ -28,10 +28,10 @@ index 8edcc9b7..2c11f460 100644
 
  	#[pallet::call]
 diff --git a/src/tests.rs b/src/tests.rs
-index 6318ca0b..5e74d29a 100644
+index 08f81b9..089ada9 100644
 --- a/src/tests.rs
 +++ b/src/tests.rs
-@@ -141,3 +141,16 @@ fn mint_increments_count_for_kitty() {
+@@ -143,3 +143,16 @@ fn mint_increments_count_for_kitty() {
  		assert_eq!(CountForKitties::<TestRuntime>::get(), Some(1));
  	})
  }

src/13/solution/src/tests.rs

@@ -127,6 +127,8 @@ fn count_for_kitties_created_correctly() {
 		CountForKitties::<TestRuntime>::set(Some(1337u32));
 		// You can `put` the value directly with a `u32`.
 		CountForKitties::<TestRuntime>::put(1337u32);
+		// Check that the value is now in storage.
+		assert_eq!(CountForKitties::<TestRuntime>::get(), Some(1337u32));
 	})
 }
 

src/13/template/README.md

@@ -2,7 +2,7 @@
 
 If you look into the history of "hacks" and "bugs" that happen in the blockchain world, a lot of it is associated with some kind of "unsafe" code.
 
-Keeping our blockchain logic safe, and Rust is designed to handle it well.
+We need to keep our blockchain logic safe, and Rust is designed to handle it well.
 
 ## Errors
 

src/13/template/src/tests.rs

@@ -127,6 +127,8 @@ fn count_for_kitties_created_correctly() {
 		CountForKitties::<TestRuntime>::set(Some(1337u32));
 		// You can `put` the value directly with a `u32`.
 		CountForKitties::<TestRuntime>::put(1337u32);
+		// Check that the value is now in storage.
+		assert_eq!(CountForKitties::<TestRuntime>::get(), Some(1337u32));
 	})
 }
 

src/13/template/template.diff

@@ -1,5 +1,5 @@
 diff --git a/src/impls.rs b/src/impls.rs
-index 97393307..c550bc8d 100644
+index 9739330..c550bc8 100644
 --- a/src/impls.rs
 +++ b/src/impls.rs
 @@ -4,6 +4,7 @@ use frame::prelude::*;
@@ -11,7 +11,7 @@ index 97393307..c550bc8d 100644
  		CountForKitties::<T>::set(Some(new_count));
  		Self::deposit_event(Event::<T>::Created { owner });
 diff --git a/src/lib.rs b/src/lib.rs
-index 90242f63..8edcc9b7 100644
+index 90242f6..8edcc9b 100644
 --- a/src/lib.rs
 +++ b/src/lib.rs
 @@ -28,7 +28,11 @@ pub mod pallet {

src/14/solution/solution.diff

@@ -1,5 +1,5 @@
 diff --git a/src/impls.rs b/src/impls.rs
-index b9b5548a..d283fd6b 100644
+index b9b5548..d283fd6 100644
 --- a/src/impls.rs
 +++ b/src/impls.rs
 @@ -3,11 +3,9 @@ use frame::prelude::*;
@@ -17,7 +17,7 @@ index b9b5548a..d283fd6b 100644
  		Ok(())
  	}
 diff --git a/src/lib.rs b/src/lib.rs
-index eeb9724b..57baa0d1 100644
+index eeb9724..57baa0d 100644
 --- a/src/lib.rs
 +++ b/src/lib.rs
 @@ -19,8 +19,7 @@ pub mod pallet {
@@ -31,10 +31,10 @@ index eeb9724b..57baa0d1 100644
  	#[pallet::event]
  	#[pallet::generate_deposit(pub(super) fn deposit_event)]
 diff --git a/src/tests.rs b/src/tests.rs
-index 5e74d29a..43af4064 100644
+index 089ada9..43af406 100644
 --- a/src/tests.rs
 +++ b/src/tests.rs
-@@ -121,10 +121,10 @@ fn create_kitty_emits_event() {
+@@ -121,26 +121,24 @@ fn create_kitty_emits_event() {
  #[test]
  fn count_for_kitties_created_correctly() {
  	new_test_ext().execute_with(|| {
@@ -48,8 +48,11 @@ index 5e74d29a..43af4064 100644
 +		CountForKitties::<TestRuntime>::set(1337u32);
  		// You can `put` the value directly with a `u32`.
  		CountForKitties::<TestRuntime>::put(1337u32);
+-		// Check that the value is now in storage.
+-		assert_eq!(CountForKitties::<TestRuntime>::get(), Some(1337u32));
  	})
-@@ -133,12 +133,12 @@ fn count_for_kitties_created_correctly() {
+ }
+
  #[test]
  fn mint_increments_count_for_kitty() {
  	new_test_ext().execute_with(|| {
@@ -66,7 +69,7 @@ index 5e74d29a..43af4064 100644
  	})
  }
 
-@@ -146,7 +146,7 @@ fn mint_increments_count_for_kitty() {
+@@ -148,7 +146,7 @@ fn mint_increments_count_for_kitty() {
  fn mint_errors_when_overflow() {
  	new_test_ext().execute_with(|| {
  		// Set the count to the largest value possible.

src/14/template/src/tests.rs

@@ -127,6 +127,8 @@ fn count_for_kitties_created_correctly() {
 		CountForKitties::<TestRuntime>::set(Some(1337u32));
 		// You can `put` the value directly with a `u32`.
 		CountForKitties::<TestRuntime>::put(1337u32);
+		// Check that the value is now in storage.
+		assert_eq!(CountForKitties::<TestRuntime>::get(), Some(1337u32));
 	})
 }
 

src/14/template/template.diff

@@ -1,5 +1,5 @@
 diff --git a/src/impls.rs b/src/impls.rs
-index 7277e367..b9b5548a 100644
+index 7277e36..b9b5548 100644
 --- a/src/impls.rs
 +++ b/src/impls.rs
 @@ -3,8 +3,10 @@ use frame::prelude::*;
@@ -14,7 +14,7 @@ index 7277e367..b9b5548a 100644
  		Self::deposit_event(Event::<T>::Created { owner });
  		Ok(())
 diff --git a/src/lib.rs b/src/lib.rs
-index 2c11f460..eeb9724b 100644
+index 2c11f46..eeb9724 100644
 --- a/src/lib.rs
 +++ b/src/lib.rs
 @@ -19,6 +19,7 @@ pub mod pallet {

src/15/solution/solution.diff

@@ -1,5 +1,5 @@
 diff --git a/src/lib.rs b/src/lib.rs
-index bb395631..42fb376b 100644
+index bb39563..42fb376 100644
 --- a/src/lib.rs
 +++ b/src/lib.rs
 @@ -21,12 +21,8 @@ pub mod pallet {
@@ -18,7 +18,7 @@ index bb395631..42fb376b 100644
  	#[pallet::event]
  	#[pallet::generate_deposit(pub(super) fn deposit_event)]
 diff --git a/src/tests.rs b/src/tests.rs
-index 43af4064..a564bb30 100644
+index 43af406..a564bb3 100644
 --- a/src/tests.rs
 +++ b/src/tests.rs
 @@ -154,3 +154,13 @@ fn mint_errors_when_overflow() {

src/15/template/README.md

@@ -19,6 +19,8 @@ Each `Key` can store a separate `Value`, which makes maps super useful.
 
 In this case `[u8; 32]` represents some unique identifier for each Kitty we will store, and `()` is simply a placeholder type for now.
 
+Note that each storage item needs its own `#[pallet::storage]` attribute.
+
 ## Conceptual
 
 The key difference between a `StorageValue` and a `StorageMap` is:

src/15/template/template.diff

@@ -1,5 +1,5 @@
 diff --git a/src/lib.rs b/src/lib.rs
-index 57baa0d1..bb395631 100644
+index 57baa0d..bb39563 100644
 --- a/src/lib.rs
 +++ b/src/lib.rs
 @@ -21,6 +21,13 @@ pub mod pallet {

src/16/solution/solution.diff

@@ -1,32 +1,32 @@
 diff --git a/src/impls.rs b/src/impls.rs
-index 89c7306a..363f5e49 100644
+index 4443702..363f5e4 100644
 --- a/src/impls.rs
 +++ b/src/impls.rs
 @@ -2,11 +2,10 @@ use super::*;
  use frame::prelude::*;
 
  impl<T: Config> Pallet<T> {
--	/* 🚧 TODO 🚧: Update this function signature to include `id` which is type `[u8; 32]`. */
+-	/* 🚧 TODO 🚧: Update this function signature to include `dna` which is type `[u8; 32]`. */
 -	pub fn mint(owner: T::AccountId) -> DispatchResult {
 +	pub fn mint(owner: T::AccountId, dna: [u8; 32]) -> DispatchResult {
  		let current_count: u32 = CountForKitties::<T>::get();
  		let new_count = current_count.checked_add(1).ok_or(Error::<T>::TooManyKitties)?;
--		/* 🚧 TODO 🚧: In the `Kitties` map, under the key `id`, insert `()`. */
+-		/* 🚧 TODO 🚧: In the `Kitties` map, under the key `dna`, insert `()`. */
 +		Kitties::<T>::insert(dna, ());
  		CountForKitties::<T>::set(new_count);
  		Self::deposit_event(Event::<T>::Created { owner });
  		Ok(())
 diff --git a/src/lib.rs b/src/lib.rs
-index 2a83b473..15fb5043 100644
+index 717c900..15fb504 100644
 --- a/src/lib.rs
 +++ b/src/lib.rs
 @@ -39,11 +39,8 @@ pub mod pallet {
  	impl<T: Config> Pallet<T> {
  		pub fn create_kitty(origin: OriginFor<T>) -> DispatchResult {
  			let who = ensure_signed(origin)?;
 -			/* 🚧 TODO 🚧:
--				- Create `const default_id`, which type `[u8; 32]` and has value `[0u8; 32]`.
--				- Pass `default_id` to the `mint` function as a second parameter.
+-				- Create a `dna` variable for this kitty, which we will set as `[0u8; 32]` for now.
+-				- Pass `dna` to the `mint` function as the second parameter.
 -			*/
 -			Self::mint(who)?;
 +			let dna = [0u8; 32];
@@ -35,7 +35,7 @@ index 2a83b473..15fb5043 100644
  		}
  	}
 diff --git a/src/tests.rs b/src/tests.rs
-index a564bb30..1da91ca7 100644
+index a564bb3..1da91ca 100644
 --- a/src/tests.rs
 +++ b/src/tests.rs
 @@ -164,3 +164,11 @@ fn kitties_map_created_correctly() {