Aggregate values into a list

Description

Usage

<Expr>$implode(..., maintain_order = TRUE)

Arguments

… These dots are for future extensions and must be empty.

maintain_order Whether to preserve the order of elements in the list. Setting this to FALSE can improve performance, especially within $group_by().

Value

A polars expression

Examples

library("polars")

df <- pl$DataFrame(a = 1:3, b = 4:6)
df$with_columns(pl$col("a")$implode())

#> shape: (3, 2)
#> ┌───────────┬─────┐
#> │ a         ┆ b   │
#> │ ---       ┆ --- │
#> │ list[i32] ┆ i32 │
#> ╞═══════════╪═════╡
#> │ [1, 2, 3] ┆ 4   │
#> │ [1, 2, 3] ┆ 5   │
#> │ [1, 2, 3] ┆ 6   │
#> └───────────┴─────┘