Hash elements
Description
The hash value is of type UInt64.
Usage
<Expr>$hash(seed = 0, seed_1 = NULL, seed_2 = NULL, seed_3 = NULL)
Arguments
seed
|
Random seed parameter. Defaults to 0. Doesn’t have any effect for now. |
seed_1, seed_2,
seed_3
|
Random seed parameter. Defaults to arg seed. The column will be coerced to UInt32. |
Value
Expr
Examples
library(polars)
df = pl$DataFrame(iris[1:3, c(1, 2)])
df$with_columns(pl$all()$hash(1234)$name$suffix("_hash"))
#> shape: (3, 4)
#> ┌──────────────┬─────────────┬──────────────────────┬──────────────────────┐
#> │ Sepal.Length ┆ Sepal.Width ┆ Sepal.Length_hash ┆ Sepal.Width_hash │
#> │ --- ┆ --- ┆ --- ┆ --- │
#> │ f64 ┆ f64 ┆ u64 ┆ u64 │
#> ╞══════════════╪═════════════╪══════════════════════╪══════════════════════╡
#> │ 5.1 ┆ 3.5 ┆ 18232672881806689409 ┆ 14554506282174058345 │
#> │ 4.9 ┆ 3.0 ┆ 8623783022495418418 ┆ 8050606693503481463 │
#> │ 4.7 ┆ 3.2 ┆ 18174443662047712936 ┆ 13738524453008131871 │
#> └──────────────┴─────────────┴──────────────────────┴──────────────────────┘