fn main() -> Result<(), Box<dyn std::error::Error>> {
let input = "\
; Server configuration
[server]
host = \"0.0.0.0\"
port = 8080
[database]
url = \"localhost:5432\"
pool_size = 10
tls = false
";
let mut doc = tomlini::parse(input)?;
doc.edit()
.set("server.port", "9090")
.set("database.pool_size", "20")
.set("database.tls", "true")
.commit()?;
println!("{}", doc);
Ok(())
}