Source code for forml.io.dsl.function._conversion
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"""
Conversion functions.
"""
import operator
import typing
from .._struct import kind as kindmod
from .._struct import series
if typing.TYPE_CHECKING:
from forml.io import dsl
[docs]class Cast(series.Expression):
"""Explicitly cast value as the given :ref:`kind <dsl-kinds>`.
Args:
value: Value to be cast to the given type.
kind: Type to cast to.
Examples:
>>> ETL = Student.select(function.Cast(Student.score, dsl.Integer()))
"""
value: series.Operable = property(operator.itemgetter(0))
kind: kindmod.Any = property(operator.itemgetter(1))
def __new__(cls, value: 'dsl.Operable', kind: 'dsl.Any'):
return super().__new__(cls, value, kind)