typo fixes

substrate/client/db/src/utils.rs

@@ -32,7 +32,7 @@ use DatabaseSettings;
 /// Number of columns in the db. Must be the same for both full && light dbs.
 /// Otherwise RocksDb will fail to open database && check its type.
 pub const NUM_COLUMNS: u32 = 7;
-/// Meta column. Thes set of keys in the column is shared by full && light storages.
+/// Meta column. The set of keys in the column is shared by full && light storages.
 pub const COLUMN_META: Option<u32> = Some(0);
 
 /// Keys of entries in COLUMN_META.

substrate/network/src/service.rs

@@ -85,7 +85,7 @@ pub trait SyncProvider<B: BlockT>: Send + Sync {
 pub trait TransactionPool<B: BlockT>: Send + Sync {
 	/// Get transactions from the pool that are ready to be propagated.
 	fn transactions(&self) -> Vec<(B::Hash, B::Extrinsic)>;
-	/// Import a transction into the pool.
+	/// Import a transaction into the pool.
 	fn import(&self, transaction: &B::Extrinsic) -> Option<B::Hash>;
 	/// Notify the pool about transactions broadcast.
 	fn on_broadcasted(&self, propagations: HashMap<B::Hash, Vec<String>>);

substrate/primitives/src/hexdisplay.rs

@@ -43,9 +43,9 @@ impl<'a> ::core::fmt::Display for HexDisplay<'a> {
 	}
 }
 
-/// Simple trait to transferm various types to `&[u8]`
+/// Simple trait to transform various types to `&[u8]`
 pub trait AsBytesRef {
-	/// Transferm `self` into `&[u8]`.
+	/// Transform `self` into `&[u8]`.
 	fn as_bytes_ref(&self) -> &[u8];
 }
 

substrate/primitives/src/sandbox.rs

@@ -152,7 +152,7 @@ pub struct Entry {
 #[derive(Clone, PartialEq, Eq, Encode, Decode)]
 #[cfg_attr(feature = "std", derive(Debug))]
 pub struct EnvironmentDefinition {
-	/// Vector of all entries in the environment defintion.
+	/// Vector of all entries in the environment definition.
 	pub entries: Vec<Entry>,
 }
 
@@ -176,7 +176,7 @@ pub const ERR_MODULE: u32 = -1i32 as u32;
 /// For FFI purposes.
 pub const ERR_OUT_OF_BOUNDS: u32 = -2i32 as u32;
 
-/// Execution error occured (typically trap).
+/// Execution error occurred (typically trap).
 ///
 /// For FFI purposes.
 pub const ERR_EXECUTION: u32 = -3i32 as u32;

substrate/runtime/contract/src/double_map.rs

@@ -57,7 +57,7 @@ fn full_key<M: StorageDoubleMap + ?Sized>(k1: M::Key1, k2: M::Key2) -> Vec<u8> {
 /// The first part is a XX hash of a concatenation of the `PREFIX` and `Key1`. And the second part
 /// is a blake2 hash of a `Key2`.
 ///
-/// Blake2 is used for `Key2` is because it will be used as a for a key for contract's storage and
+/// Blake2 is used for `Key2` is because it will be used as a key for contract's storage and
 /// thus will be susceptible for a untrusted input.
 pub trait StorageDoubleMap {
 	type Key1: Codec;

substrate/state-db/src/lib.rs

@@ -72,7 +72,6 @@ pub trait HashDb {
 	fn get(&self, key: &Self::Hash) -> Result<Option<DBValue>, Self::Error>;
 }
 
-/// Error type.
 /// Error type.
 pub enum Error<E: fmt::Debug> {
 	/// Database backend error.