How to Use Serde with CSV Files in Rust

Use the csv crate with Serde to parse CSV files into structs by deriving Deserialize and calling Reader::from_path.

[dependencies]
serde = { version = "1.0", features = ["derive"] }
csv = "1.3"

use serde::Deserialize;

#[derive(Debug, Deserialize)]
struct Record {
    name: String,
    age: u32,
}

fn main() -> Result<(), Box<dyn std::error::Error>> {
    let mut rdr = csv::Reader::from_path("data.csv")?;
    for result in rdr.deserialize() {
        let record: Record = result?;
        println!("{:?}", record);
    }
    Ok(())
}

Using Serde with CSV files in Rust lets your program automatically read rows and turn them into structured data objects. It works like a spreadsheet importer that maps columns to your code variables without manual parsing. You use it whenever you need to process tabular data like logs or user lists.