1 unstable release
0.1.0 | Apr 16, 2024 |
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#823 in Procedural macros
7KB
75 lines
polars-row-derive
This is a simple crate that allows you derive a custom trait to convert
an iterator over your structs into a DataFrame
from the polars
crate.
Example
use polars_row_derive::IterToDataFrame;
#[derive(IterToDataFrame)]
pub struct TestStruct {
a: i32,
b: i32,
}
// Dynamic size iterator
let df = (0..10)
.filter(|i| i % 2 == 0)
.map(|i| TestStruct { a: i, b: i })
.to_dataframe_dyn()
.unwrap();
assert_eq!(df.shape(), (5, 2));
// Fixed size iterator
let df = (0..10)
.map(|i| TestStruct { a: i, b: i })
.to_dataframe()
.unwrap();
assert_eq!(df.shape(), (10, 2));
Dependencies
~245–690KB
~17K SLoC