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io-ts-numbers

v1.1.1

Published

io-ts library for numbers

Downloads

106,704

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Links

Git

Maintainers

hamroctopushamroctopus

Keywords

io-tsnumber

Readme

io-ts-numbers

NPM Package

io-ts library for numbers

Install

npm install io-ts-numbers

Definitions

numbers

open circle = exclusive, closed circle = inclusive

This diagram denotes the sets of numbers included in some of the codecs. Note that zero is neither positive nor negative.

Here we can see that the set of Positive numbers contains all reals greater than zero. The set of NonPositive numbers contains the remaining reals (including zero). The union of the set of Positive and NonPositive numbers contains all real numbers.

This relationship is mirrored in the Negative and NonNegative sets, and the Zero and NonZero sets.

The Natural numbers are defined by the Peano axioms, so the set of Natural numbers includes zero and every finite positive integer.

Related

Acknowledgments