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# author : S. Mandalia
# shivesh.mandalia@outlook.com
#
# date : March 19, 2020
"""
Miscellaneous utility methods.
"""
from typing import Any, Union
__all__ = ['Number', 'is_num', 'is_pos']
_T = (int, float)
Number = Union[int, float]
def is_num(val: Any) -> bool:
"""
Check if the input value is a finite number.
Parameters
----------
val : object
Value to check.
Returns
-------
bool
Examples
--------
>>> from utils.misc import is_num
>>> print(is_num(10))
True
>>> print(is_num(None))
False
"""
if not isinstance(val, _T):
return False
return True
def is_pos(val: Any) -> bool:
"""
Check if the input value is a finite positive number.
Parameters
----------
val : object
Value to check.
Returns
-------
bool
Examples
--------
>>> from utils.misc import is_pos
>>> print(is_pos(10))
True
>>> print(is_pos(-10))
False
"""
if not is_num(val):
return False
if not val >= 0:
return False
return True
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