Number class abstract

Implemented types
Implementers

Constructors

Number()

Properties

hashCode → int
Returns a hash code for a numerical value.
no setteroverride
isInfinite → bool
True if the number is infinite; otherwise, false.
no setter
isNaN → bool
True if the number is not a number; otherwise, false.
no setter
isNegative → bool
True if the number is negative; otherwise, false.
no setter
runtimeType → Type
A representation of the runtime type of the object.
no setterinherited
sign → Integer
Returns minus one, zero or plus one depending on the sign and numerical value of the number.
no setter

Methods

abs() → Number
Returns the absolute value of this num.
ceil() → Integer
Returns the least integer no smaller than this.
compareTo(Number other) → int
Compares this to other.
override
floor() → Integer
Returns the greatest integer no greater than this.
noSuchMethod(Invocation invocation) → dynamic
Invoked when a nonexistent method or property is accessed.
inherited
remainder(Number other) → Number
Returns the remainder of the truncating division of this by other.
round() → Integer
Returns the integer closest to this.
roundWithPrecision(int precision, [RoundingMode mode = RoundingMode.nearestEven]) → Number
Returns number rounded according to precision and RoundingMode.
toInt() → int
Truncates this Number to an integer and returns the result as an int. */
toInteger() → Integer
Truncates this Number to an integer and returns the result as an Integer.
toString() → String
Returns the shortest string that correctly represent the input number.
override
toStringAsExponential([int? fractionDigits]) → String
Returns an exponential string-representation of this.
toStringAsFixed(int fractionDigits) → String
Returns a decimal-point string-representation of this. Converts this to a Decimal before computing the string representation. If the absolute value of this is greater or equal to 10^21 then this methods returns an exponential representation computed by this.toStringAsExponential(). Otherwise the result is the closest string representation with exactly fractionDigits digits after the decimal point. If fractionDigits equals 0 then the decimal point is omitted.
toStringAsPrecision(int precision) → String
Converts this to a decimal and returns a string representation with exactly precision significant digits.
truncate() → Integer
Returns the integer obtained by discarding any fractional digits from this.

Operators

operator %(Number other) → Number
Euclidean modulo operator.
operator *(Number other) → Number
Multiplication operator.
operator +(Number other) → Number
Addition operator.
operator -(Number other) → Number
Subtraction operator.
operator /(Number other) → Decimal
Division operator.
operator <(Number other) → bool
Relational less than operator.
operator <=(Number other) → bool
Relational less than or equal operator.
operator ==(Object other) → bool
Test whether this value is numerically equal to other.
override
operator >(Number other) → bool
Relational greater than operator.
operator >=(Number other) → bool
Relational greater than or equal operator.
operator unary-() → Number
Negate operator.
operator ~/(Number other) → Integer
Truncating division operator.

Static Methods

parse(String input) → Number
Parses a string containing a number literal into a number. The method first tries to read the input as integer (similar to int.parse without a radix). If that fails, it tries to parse the input as a decimal (similar to Decimal.parse). If that fails too, it throws FormatException.