tabsdata.tableframe.expr.expr.Expr.reinterpret#

Expr.reinterpret(*, signed: bool = True) → Expr[source]#

Reinterpret the 64bit element values (i64 or u64) as a signed/unsigned integers. Only valid for 64bit integers, for other types use cast.

Parameters:: signed – true to convert to i64, false to convert to u64. This named argument must be specified.

Example:

>>> import tabsdata as td
>>>
>>> tf: td.TableFrame ...
>>>
>>> tf.select(td.col("val"), td.col("val")
>>>   .reinterpret(signed=False).alias("reinterpret"))
>>>
┌──────┬─────────────┐
│ val  ┆ reinterpret │
│ ---  ┆ ---         │
│ i64  ┆ u64         │
╞══════╪═════════════╡
│ 3    ┆ 3           │
│ 1    ┆ 1           │
│ 5    ┆ 5           │
│ 4    ┆ 4           │
│ 2    ┆ 2           │
│ 6    ┆ 6           │
│ null ┆ null        │
└──────┴─────────────┘