add csv

csv/src/main.rs

@@ -0,0 +1,21 @@
+use std::error::Error;
+use std::io;
+use std::process;
+
+fn example() -> Result<(), Box<dyn Error>> {
+    let mut rdr = csv::Reader::from_reader(io::stdin());
+    for result in rdr.records() {
+        // Result<StringRecord, Error>
+        let record = result?;
+        println!("{:?}", record);
+    }
+    Ok(())
+}
+
+// https://crates.io/crates/csv
+fn main() {
+    if let Err(err) = example() {
+        println!("error running example: {}", err);
+        process::exit(1);
+    }
+}