add get_csv_u8_slice

This commit is contained in:
2020-05-01 20:46:56 +08:00
parent 3cd720c68e
commit 5cf37e5b3b

View File

@@ -1,21 +1,26 @@
use std::error::Error; fn get_csv_u8_slice() -> Vec<u8> {
use std::io; r#"a,b,c
use std::process; 111,222,333
china,usa,england"#.as_bytes().to_vec()
}
fn example() -> Result<(), Box<dyn Error>> { // fn example() -> Result<(), Box<dyn Error>> {
let mut rdr = csv::Reader::from_reader(io::stdin()); // let mut rdr = csv::Reader::from_reader(io::stdin());
for result in rdr.records() { // for result in rdr.records() {
// Result<StringRecord, Error> // // Result<StringRecord, Error>
let record = result?; // let record = result?;
println!("{:?}", record); // println!("{:?}", record);
} // }
Ok(()) // Ok(())
} // }
// https://crates.io/crates/csv // https://crates.io/crates/csv
fn main() { fn main() {
if let Err(err) = example() { let csv_u8_slice = &get_csv_u8_slice()[..];
println!("error running example: {}", err); let mut rdr = csv::Reader::from_reader(csv_u8_slice);
process::exit(1); for result in rdr.records() {
if let Ok(r) = result {
println!("{:?}", r);
}
} }
} }