()
| 67 | // ========================================================================= |
| 68 | |
| 69 | fn sample_df() -> DataFrame { |
| 70 | let mut df = DataFrame::new(vec![]); |
| 71 | df.push("x", Series::new(vec![1, 2, 3, 4])); |
| 72 | df.push("y", Series::new(vec![0.1, 0.2, 0.3, 0.4])); |
| 73 | df.push("z", Series::new(vec!['a', 'b', 'c', 'd'])); |
| 74 | df |
| 75 | } |
| 76 | |
| 77 | #[test] |
| 78 | fn test_nrow() { |