Rational class abstract base

Dart representation of a rational number.

A rational number is a number that can be expressed as the quotient x/y of two integers, a numerator x and a non-zero denominator y. Any rational number is also a real number.

Rational and all of its sub-types are immutable. This type can only be subclassed.

Constructors

Rational(): Creates a Rational object.
const

Properties

denominator → int: The divisor b of the a/b division, which also is the denominator of the associated fraction.
no setter
hashCode → int: The hash code for this object.
no setterinherited
isNegative → bool: True or false whether this rational number is positive or negative.
no setter
isWhole → bool: True or false whether this rational number is whole or not.
no setter
numerator → int: The dividend a of the a/b division, which also is the numerator of the associated fraction.
no setter
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited

Methods

compareTo(Rational other) → int: Compares this object to another object.
override
negate() → Rational: The sign is changed and the result is returned in new Rational object.
noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
reduce() → Rational: Reduces this rational number to the lowest terms and returns the result in a new Rational object.
toDouble() → double: A floating point representation of this rational number.
toEgyptianFraction() → List<Fraction>: Represents this rational number as an egyptian fraction.
toString() → String: A string representation of this object.
inherited

Operators

operator <(Rational other) → bool: Checks whether this rational number is smaller than the other.
operator <=(Rational other) → bool: Checks whether this rational number is smaller or equal than the other.
operator ==(Object other) → bool: The equality operator.
inherited
operator >(Rational other) → bool: Checks whether this rational number is greater than the other.
operator >=(Rational other) → bool: Checks whether this rational number is greater or equal than the other.

Static Methods

tryParse(String value) → Rational?: This function tries to convert a String into a Fraction or MixedFraction object. If the conversion fails, null is returned. For example: