chore: add csv example #4904
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chore: add csv example #4904
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Signed-off-by: fan <[email protected]>
fansehep
commented
Oct 9, 2023
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| fn main() { | ||
| // read csv from file | ||
| let file = File::open("arrow-csv/test/data/example.csv").unwrap(); |
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Maybe I think don't need create a new file.
tustvold
reviewed
Oct 9, 2023
arrow-csv/examples/README.md
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| # Examples | ||
| - [`csv_calculation.rs`](csv_calculation.rs): simple use the csv API to calcuate. |
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Suggested change
| - [`csv_calculation.rs`](csv_calculation.rs): simple use the csv API to calcuate. | |
| - [`csv_calculation.rs`](csv_calculation.rs): performs a simple calculation using the CSV reader |
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Done. Good iead. 😄
Comment on lines
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| println!( | ||
| "max value column(0): {:?}", | ||
| s.column(0) | ||
| .as_any() | ||
| .downcast_ref::<Int16Array>() | ||
| .unwrap() | ||
| .iter() | ||
| .max() | ||
| .unwrap() | ||
| ); |
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Suggested change
| println!( | |
| "max value column(0): {:?}", | |
| s.column(0) | |
| .as_any() | |
| .downcast_ref::<Int16Array>() | |
| .unwrap() | |
| .iter() | |
| .max() | |
| .unwrap() | |
| ); | |
| let col = s.column(0).as_primitive::<Int16Type>(); | |
| let max = col.iter().max().flatten(); | |
| println!("max value column(0): {max:?}"); |
With the necessary additional imports
Signed-off-by: fan <[email protected]>
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Which issue does this PR close?
Part of #1613
Rationale for this change
What changes are included in this PR?
add a example for arrow-csv.
Are there any user-facing changes?