Remove unneeded Config bounds and BlockNumber associated type (#804)

* remove unneeded Config bounds and BlockNumber associated type

* clippy and fmt

examples/examples/balance_transfer.rs

@@ -38,7 +38,7 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
     // Submit the transaction with default params:
     let hash = api.tx().sign_and_submit_default(&tx, &signer).await?;
 
-    println!("Balance transfer extrinsic submitted: {}", hash);
+    println!("Balance transfer extrinsic submitted: {hash}");
 
     Ok(())
 }

examples/examples/balance_transfer_with_params.rs

@@ -50,7 +50,7 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
     // submit the transaction:
     let hash = api.tx().sign_and_submit(&tx, &signer, tx_params).await?;
 
-    println!("Balance transfer extrinsic submitted: {}", hash);
+    println!("Balance transfer extrinsic submitted: {hash}");
 
     Ok(())
 }

examples/examples/custom_config.rs

@@ -30,7 +30,6 @@ impl Config for MyConfig {
     // polkadot runtime used, so some operations will fail. Normally when using a custom `Config`
     // impl types MUST match exactly those used in the actual runtime.
     type Index = u64;
-    type BlockNumber = <SubstrateConfig as Config>::BlockNumber;
     type Hash = <SubstrateConfig as Config>::Hash;
     type Hasher = <SubstrateConfig as Config>::Hasher;
     type Header = <SubstrateConfig as Config>::Header;
@@ -58,7 +57,7 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
     // submit the transaction with default params:
     let hash = api.tx().sign_and_submit_default(&tx, &signer).await?;
 
-    println!("Balance transfer extrinsic submitted: {}", hash);
+    println!("Balance transfer extrinsic submitted: {hash}");
 
     Ok(())
 }

examples/examples/dynamic_queries.rs

@@ -46,13 +46,13 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
 
     // submit the transaction with default params:
     let hash = api.tx().sign_and_submit_default(&tx, &signer).await?;
-    println!("Balance transfer extrinsic submitted: {}", hash);
+    println!("Balance transfer extrinsic submitted: {hash}");
 
     // 2. Dynamic constant access (the dynamic equivalent to the fetch_constants example).
 
     let constant_address = subxt::dynamic::constant("Balances", "ExistentialDeposit");
     let existential_deposit = api.constants().at(&constant_address)?.to_value()?;
-    println!("Existential Deposit: {}", existential_deposit);
+    println!("Existential Deposit: {existential_deposit}");
 
     // 3. Dynamic storage access
 

examples/examples/fetch_constants.rs

@@ -32,7 +32,7 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
     // Look it up:
     let existential_deposit = api.constants().at(&address)?;
 
-    println!("Existential Deposit: {}", existential_deposit);
+    println!("Existential Deposit: {existential_deposit}");
 
     Ok(())
 }

examples/examples/fetch_staking_details.rs

@@ -45,14 +45,14 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
     );
 
     let alice_id = AccountKeyring::Alice.to_account_id();
-    println!("  Alice account id:        {:?}", alice_id);
+    println!("  Alice account id:        {alice_id:?}");
 
     // Get Alice' Stash account ID
     let alice_stash_id: AccountId32 = sr25519::Pair::from_string("//Alice//stash", None)
         .expect("Could not obtain stash signer pair")
         .public()
         .into();
-    println!("  Alice//stash account id: {:?}", alice_stash_id);
+    println!("  Alice//stash account id: {alice_stash_id:?}");
 
     // Map from all locked "stash" accounts to the controller account.
     let controller_acc_addr = polkadot::storage().staking().bonded(&alice_stash_id);
@@ -63,7 +63,7 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
         .fetch(&controller_acc_addr)
         .await?
         .unwrap();
-    println!("    account controlled by: {:?}", controller_acc);
+    println!("    account controlled by: {controller_acc:?}");
 
     let era_reward_addr = polkadot::storage().staking().eras_reward_points(era.index);
     let era_result = api
@@ -72,7 +72,7 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
         .await?
         .fetch(&era_reward_addr)
         .await?;
-    println!("Era reward points: {:?}", era_result);
+    println!("Era reward points: {era_result:?}");
 
     Ok(())
 }

examples/examples/storage_iterating.rs

@@ -40,7 +40,7 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
         println!("\nExample 1. Obtained keys:");
         while let Some((key, value)) = iter.next().await? {
             println!("Key: 0x{}", hex::encode(key));
-            println!("  Value: {}", value);
+            println!("  Value: {value}");
         }
     }
 
@@ -69,7 +69,7 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
                 // - polkadot.rs generated file under `version_notifiers()` fn
                 // - metadata in json format
                 let value = u64::decode(&mut &*storage_data)?;
-                println!("  Value: {}", value);
+                println!("  Value: {value}");
             }
         }
     }
@@ -109,7 +109,7 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
                 // - polkadot.rs generated file under `version_notifiers()` fn
                 // - metadata in json format
                 let value = u64::decode(&mut &storage_data[..])?;
-                println!("  Value: {}", value);
+                println!("  Value: {value}");
             }
         }
     }

examples/examples/submit_and_watch.rs

@@ -169,7 +169,7 @@ async fn handle_transfer_events() -> Result<(), Box<dyn std::error::Error>> {
         }
         // Report other statuses we see.
         else {
-            println!("Current transaction status: {:?}", ev);
+            println!("Current transaction status: {ev:?}");
         }
     }
 

examples/examples/subscribe_runtime_updates.rs

@@ -28,7 +28,7 @@ async fn main() -> Result<(), Box<dyn std::error::Error>> {
     let update_client = api.updater();
     tokio::spawn(async move {
         let result = update_client.perform_runtime_updates().await;
-        println!("Runtime update failed with result={:?}", result);
+        println!("Runtime update failed with result={result:?}");
     });
 
     // If this client is kept in use a while, it'll update its metadata and such