mirror of
https://github.com/pezkuwichain/pezkuwi-subxt.git
synced 2026-05-10 02:57:58 +00:00
James Wilson
562f12cd9b
* WIP Starting to write book; extrinsics first pass done * cargo fmt * Ongoing work; events, constants, wip blocks * at_latest() and wip blocks * remove need to import parity-scale-codec crate with Subxt for macro to work * More docs; expanding on setup guide and finish pass of main sections * Tidy and remove example section for now * format book lines to 100chars * Fix example code * cargo fmt * cargo fmt * fix example * Fix typos * fix broken doc links, pub mods * Update Subxt macro docs * can't link to Subxt here * move macro docs to Subxt to make linking better and fix example code * note on macro about docs * cargo fmt * document the no_default_derives macro feature * Address feedback and remove redundant text * address review comments; minor tweaks * WIP add Runtime calls to book * Improve Runtime API docs * expose thing we forgot to expose and doc link fixes
18 lines
538 B
Rust
18 lines
538 B
Rust
use subxt::{OnlineClient, PolkadotConfig};
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#[tokio::main]
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async fn main() -> Result<(), Box<dyn std::error::Error>> {
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// Create a client to use:
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let api = OnlineClient::<PolkadotConfig>::new().await?;
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// A dynamic query to obtain some contant:
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let constant_query = subxt::dynamic::constant("System", "BlockLength");
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// Obtain the value:
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let value = api.constants().at(&constant_query)?;
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println!("Constant bytes: {:?}", value.encoded());
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println!("Constant value: {}", value.to_value()?);
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Ok(())
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}
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