More Math! Many of the aggregates you are familiar with, but they ignore Nones
Project description
Basic math functions that have been stabilized to act well over Null
Overview
Many of the basic math functions you know and love, with the additional benefit that they do not throw exceptions and do not return NaN. Rather, all function return Null in the exceptional case.
These functions are all static methods. This ensures you call the functions with Math. prefix, like
Math.abs(-42)
This prevents confusion with the built-in functions by the same name
Functions
Most functions need no introduction, so are not listed here. Some of the interesting ones are:
Math.round(value, decimal=7, digits=None) - Rounds to 7decimal points, unless specified differently. Rounding to decimal=0 will return an int. The useful parameter here is digits, which rounds to a specified number of significant digits.
Math.floor(value, mod=1) - The modulo parameter is used to specify the granularity of the floor function.
Math.ceiling(value, mod=1) - Return the smallest value, that’s larger than value, with suitable granularity.
Math.mod(value, mod=1) - Works on floats
Math.approx_str(value) - Round values, and return unicode
Math.sign(v) - Missing from the Python library
The all-caps aggregate functions accept only one parameter; an iterable. Null values are ignored. If all values are Null, the function returns Null.
COUNT(values)
SUM(values) -
PRODUCT(values) -
MIN(values) -
MAX(values) -
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