np

Documentation

Overview

Package np provides a way to query the Numeric Properties of a Unicode code point. This allows, for example, parsing the value of digits and numerals in other languages.

Index

• Constants
• func Get(x rune) (Type, Fraction)
• type Fraction
• type Type

Constants

const (
	None    = 0
	Decimal = 1 // decimal-radix numeral e.g. 0-9
	Digit   = 2 // typographic context e.g. superscript
	Numeric = 3 // non-decimal e.g. Roman numerals
)

Functions

func Get

func Get(x rune) (Type, Fraction)

Get returns, for the given codepoint, its Type and Value. If not found, Type is None.

Types

type Fraction

type Fraction struct {
	Numerator   int64
	Denominator int64
}

Fraction is some (Numerator/Denominator)

type Type

type Type int

Type returns the type of a numeral.

• Decimal is a numeral in a decimal-radix number system, such as the ASCII digits 0-9, Devanagari digits, Arabic digits, etc.
• Digit is like Decimal, but in some typographic context, e.g. superscript, a number in a circle, etc.
• Numeric is a numeral that has a value, but does not appear in a decimal system. For example, fractions, Tamil numbers, or Roman numerals.