Printing structs and values in Rust (like Go's fmt.Println).

Print Macros

Macro Trait Required Use Case
println!("{}", x) Display Human-readable output
println!("{:?}", x) Debug Developer/debug output
println!("{:#?}", x) Debug Pretty-printed debug

Derive Debug for Your Structs

#[derive(Debug, Deserialize)]
pub struct ExchangeInfo {
    pub symbols: Vec<Symbol>,
}

#[derive(Debug, Deserialize)]
pub struct Symbol {
    pub symbol: String,
}

Then use:

let info = client.fetch_exchange_info().await?;
println!("{:#?}", info);  // Pretty prints the whole struct

Go vs Rust

Go Rust
fmt.Println(x) println!("{:?}", x)
fmt.Printf("%+v", x) println!("{:#?}", x)

Rust doesn't auto-cast for printing—you need Debug or Display traits.