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Refactor example code in README.md for clarity and consistency

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Palash Tyagi 2025-04-26 05:58:28 +01:00
parent 94cdbe3b0e
commit 770ec174e6
1 changed files with 16 additions and 10 deletions
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26
README.md
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@ -55,20 +55,26 @@ let dates: Vec<NaiveDate> =
let col_names = vec!["a".to_string(), "b".to_string()]; let col_names = vec!["a".to_string(), "b".to_string()];
let ma = Matrix::from_cols(vec![ let ma = Matrix::from_cols(vec![vec![1.0, 2.0, 3.0, 4.0], vec![5.0, 6.0, 7.0, 8.0]]);
vec![1.0, 2.0, 3.0, 4.0], let mb = Matrix::from_cols(vec![vec![4.0, 3.0, 2.0, 1.0], vec![8.0, 7.0, 6.0, 5.0]]);
vec![5.0, 6.0, 7.0, 8.0],
]);
let mb = Matrix::from_cols(vec![
vec![4.0, 3.0, 2.0, 1.0],
vec![8.0, 7.0, 6.0, 5.0],
]);
let fa = Frame::new(ma, col_names.clone(), Some(RowIndex::Date(dates.clone()))); let fa = Frame::new(
ma.clone(),
col_names.clone(),
Some(RowIndex::Date(dates.clone())),
);
let fb = Frame::new(mb, col_names, Some(RowIndex::Date(dates))); let fb = Frame::new(mb, col_names, Some(RowIndex::Date(dates)));
// Math that reads like math // Math that reads like math
let result = &fa * &fb; // element‑wise multiply let result = &fa * &fb; // element‑wise multiply
let total = result.matrix().sum_vertical().iter().sum::<f64>(); let total = result.matrix().sum_vertical().iter().sum::<f64>();
assert_eq!(total, 184.0); assert_eq!(total, 184.0);
let result = &ma + 1.0; // add scalar
let result = &result - 1.0; // subtract scalar
let result = &result * 2.0; // multiply by scalar
let result = &result / 2.0; // divide by scalar
let check = result.eq_elementwise(ma).all();
assert!(check);
``` ```