mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-04-23 06:08:01 +00:00
David Craven
f861f3fac4
* Proc macro improvements. * Use proc-macros. * Update examples. * Fix build. * Run rustfmt. * Fix total issuance test. * Remove gas limit from put code call. * Handle runtime errors. * Fix tests. * Make test more reliable. * Revert "Handle runtime errors." This reverts commit 26f30a9f4cfcfddfb3e49308cded46cfe6468697. * Use expect instead of unwrap. * Parse marker type. * Fetch doesn't fail.
43 lines
1.3 KiB
Rust
43 lines
1.3 KiB
Rust
// Copyright 2019-2020 Parity Technologies (UK) Ltd.
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// This file is part of substrate-subxt.
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//
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// subxt 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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//
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// subxt 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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//
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// You should have received a copy of the GNU General Public License
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// along with substrate-subxt. If not, see <http://www.gnu.org/licenses/>.
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use substrate_subxt::{
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ClientBuilder,
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KusamaRuntime,
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};
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#[async_std::main]
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async fn main() -> Result<(), Box<dyn std::error::Error>> {
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env_logger::init();
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let client = ClientBuilder::<KusamaRuntime>::new()
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.set_url("wss://kusama-rpc.polkadot.io")
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.build()
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.await?;
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let block_number = 1;
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let block_hash = client.block_hash(Some(block_number.into())).await?;
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if let Some(hash) = block_hash {
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println!("Block hash for block number {}: {}", block_number, hash);
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} else {
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println!("Block number {} not found.", block_number);
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}
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Ok(())
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}
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