diff --git a/csv/src/main.rs b/csv/src/main.rs
index c83182c..67b8c76 100644
--- a/csv/src/main.rs
+++ b/csv/src/main.rs
@@ -1,21 +1,26 @@
-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(())
+fn get_csv_u8_slice() -> Vec<u8> {
+    r#"a,b,c
+111,222,333
+china,usa,england"#.as_bytes().to_vec()
 }
 
+// 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);
+    let csv_u8_slice = &get_csv_u8_slice()[..];
+    let mut rdr = csv::Reader::from_reader(csv_u8_slice);
+    for result in rdr.records() {
+        if let Ok(r) = result {
+            println!("{:?}", r);
+        }
     }
 }
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