Expr.hash

methodView source ↗

def hash(
    seed: int = 0,
    seed_1: int | None = None,
    seed_2: int | None = None,
    seed_3: int | None = None,
) -> Expr

Categories: numeric

Compute the hash of an element value.

Parameters

parameter

seed

The seed for the hash function.

parameter

seed_1

The first seed for the hash function.

parameter

seed_2

The second seed for the hash function.

parameter

seed_3

The third seed for the hash function.

Examples

>>> import tabsdata as td
>>>
>>> tf: td.TableFrame ...
>>>
>>> tf = tf.select(td.col("temp"), td.col("temp").hash(5).alias("hash"))
>>>
┌──────┬─────────────────────┐
│ temp ┆ hash                │
│ ---  ┆ ---                 │
│ f64  ┆ u64                 │
╞══════╪═════════════════════╡
│ 1.1  ┆ 1438840365631752616 │
│ 2.0  ┆ 4738789230185236462 │
└──────┴─────────────────────┘