use async_std::fs; let contents = fs::read_to_string("a.txt").await?;

https://docs.rs/async-std/1.3.0/async_std/fs/fn.read_to_string.html

let dir = env::current_dir().unwrap(); let path = format!("{0}/src/token.json",dir.display()); let token = fs::read_to_string(path).await.unwrap(); let p = json::parse(&token).unwrap();; println!("{}",p["access_token"]); 12.09.22

https://www.programming-idioms.org/idiom/106/get-program-working-directory/2258/rust

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