Time: 2021-04-12 11:56 UTC+8:00
Author: Me
It's not easy to judge a string's content's type in a normal way. So, it's time for regular expressions.
Integers
isInteger = /^-?\d+$/ # for integers
isPositiveInt = /^[0-9]*[1-9][0-9]*$/ # for positive integers
isNegativeInt = /^-[0-9]*[1-9][0-9]*/ # for negative integers
isNonPosiInt = /^((-\d+)|(0+))$/ # for non-positive integers
isNonNegaInt = /^\d+/ # for non-negative integers
Floats
isFloat = /^(-?\d+)(\.\d+)?/ # for floats
isPositiveFloat = /^(([0-9]+\.[0-9]*[1-9][0-9]*)|([0-9]*[1-9][0-9]*\.[0-9]+)|([0-9]*[1-9][0-9]*))$/ # for positive floats
isNegativeFloat = /^(-(([0-9]+\.[0-9]*[1-9][0-9]*)|([0-9]*[1-9][0-9]*\.[0-9]+)|([0-9]*[1-9][0-9]*)))$/ # for negative floats
isNonPosiFloat = /^((-\d+(\.\d+)?)|(0+(\.0+)?))$/ # for non-positive floats
isNonNegaFloat = /^\d+(\.\d+)?$/ # for non-negative floats
Top comments (0)