Number class - quantity library

Constructors

Number(): The default constructor.
Number.constant(): Supports const constructors in concrete classes.
const
Number.fromMap(Map<String, dynamic>? m): Detect the type of Number by inspecting map contents and create it. Recognized formats are: {'i': int value} {'d': double value} {'pd': arbitrary precision string} {'real': {i or d map}, 'imag': {i or d map}} {'imag': {i or d map}}
factory

Properties

hashCode → int: The hash codes for two Numbers will be equal when the represented values are equal, even if the Number subtypes are different.
no setteroverride
isFinite → bool: Whether this Number represents a finite value.
no setter
isInfinite → bool: Whether this Number represents infinity.
no setter
isInteger → bool: True if the Number represents an integer value. Note that the Number does not have to be of type Integer for this to be true.
no setter
isNaN → bool: Whether this Number represents a value .
no setter
isNegative → bool: Whether this number is less than zero.
no setter
runtimeType → Type: A representation of the runtime type of the object.
no setterinherited
sign → num: Returns minus one, zero or plus one depending on the sign and numerical value of the number. Returns minus one if the number is less than zero, plus one if the number is greater than zero, and zero if the number is equal to zero. Returns NaN if the number is NaN. Returns an int if this Number's value is an integer, a double otherwise.
no setter

Methods

abs() → Number: Returns the absolute value of this Number.
ceil() → Number: Returns the least Number having integer components no smaller than this Number.
clamp(dynamic lowerLimit, dynamic upperLimit) → Number: Returns this num clamped to be in the range lowerLimit-upperLimit. The comparison is done using compareTo and therefore takes -0.0 into account. This also implies that double.NAN is treated as the maximal double value. lowerLimit and upperLimit are expected to be num or `Number' objects.
compareTo(dynamic n2) → int: Compares this Number to another Number by comparing values. n2 is expected to be a num or Number. If it is not it will be considered to have a value of 0.
override
floor() → Number: Returns the greatest Number with an integer value no greater than this Number. If this is not finite (NaN or infinity), throws an UnsupportedError.
noSuchMethod(Invocation invocation) → dynamic: Invoked when a nonexistent method or property is accessed.
inherited
reciprocal() → Number: Returns the Number that is the reciprocal of this Number. This Number is unaffected.
remainder(dynamic divisor) → Number: Returns the remainder of the truncating division of this Number by divisor. The result r of this operation satisfies: this == (this ~/ other) * other + r. As a consequence the remainder r has the same sign as the operator /(divisor).
round() → Number: Returns the integer Number closest to this Number. Rounds away from zero when there is no closest integer: (3.5).round() == 4 and (-3.5).round() == -4. If this is not finite (NaN or infinity), throws an UnsupportedError.
toDouble() → double: Converts this Number to a dart:core double.
toInt() → int: Converts this Number to a dart:core int.
toJson() → Map<String, dynamic>: Subclasses must support dart:json for stringify.
toString() → String: A string representation of this object.
inherited
truncate() → Number: Returns a truncated value.

Operators

operator %(dynamic divisor) → Number: Returns the remainder after division of this Number by divisor (a Number or num).
operator *(dynamic multiplicand) → Number: Returns the product of this Number and the multiplicand (a Number or num). This Number is unaffected.
operator +(dynamic addend) → Number: Returns the sum of this Number and a Number or num. This Number is unaffected.
operator -(dynamic subtrahend) → Number: Returns the difference of this Number and the subtrahend (a Number or num). This Number is unaffected.
operator /(dynamic divisor) → Number: Returns the quotient of this Number divided by the divisor (a Number or num). This Number is unaffected.
operator <(dynamic obj) → bool: Returns whether the value of this Number is less than the value of obj (a Number or num).
operator <=(dynamic obj) → bool: Returns whether the value of this Number is less than or equal to the value of obj (a Number or num).
operator ==(dynamic obj) → bool: Two Numbers will be equal when the represented values are equal, even if the Number subtypes are different.
override
operator >(dynamic obj) → bool: Returns whether the value of this Number is greater than the value of obj (a Number or num).
operator >=(dynamic obj) → bool: Returns whether the value of this Number is greater than or equal to the value of obj (a Number or num).
operator ^(dynamic exponent) → Number: Returns this Number raised to the power of exponent (a Number or num). This Number is unaffected.
operator unary-() → Number: Returns the negative of this Number. This Number is unaffected.
operator ~/(dynamic divisor) → Number: Returns the quotient of this Number divided by the divisor (a Number or num) truncated to an Integer. This Number is unaffected.

Static Methods

simplifyType(Number n) → Number: Returns the Number equivalent to n having the simplest type that can represent the value (in order): Integer, Double, Imaginary, or Complex. If n is already the most simple type possible, then it will be returned directly. Precise Numbers always remain Precise.

Number class abstract

Constructors

Properties

Methods

Operators

Static Methods

quantity library