Type conversion and passing to CSV Writer raises an error

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1

A newbie question: what error is happening here? And how to work around it?

Here's the sketch that represents my problem with csv::Writer. Replacing &[...] with vec![...] does not change the error.

extern crate csv;
use std::error::Error;
use csv::Writer;

fn main() -> Result<(), Box<dyn Error>>{
	let mut wr = Writer::from_path("/tmp/mycsv.csv")?;
	let id: i64 = 1231313122;
	let lon: f64 = 12.4567789;
	let lat: f64 = 34.567890;
	wr.write_record(&["id", "lon", "lat"])?;
	wr.write_record(&[id as f64, lon, lat])?;
	              //^^^^^^^^^^^^^^^^^^^^^^ the trait `AsRef<[u8]>` is not implemented for `f64`
	Ok(())
}
2

The write_record method requires string-like values. You'll need to convert your floats into strings. Alternatively, you may also be able to use the serialize method.

3

That worked, thanks!

4

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