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num class

An integer or floating-point number.

It is a compile-time error for any type other than int or double to attempt to extend or implement num.

Implements
Implemented by

Constructors

num()

Properties

hashCodeint
read-only
Returns a hash code for a numerical value. [...]
isFinitebool
read-only
True if the number is finite; otherwise, false. [...]
isInfinitebool
read-only
True if the number is positive infinity or negative infinity; otherwise, false.
isNaNbool
read-only
True if the number is the double Not-a-Number value; otherwise, false.
isNegativebool
read-only
True if the number is negative; otherwise, false. [...]
signnum
read-only
Returns minus one, zero or plus one depending on the sign and numerical value of the number. [...]
runtimeTypeType
read-only, inherited
A representation of the runtime type of the object.

Methods

abs() → num
Returns the absolute value of this num.
ceil() → int
Returns the least integer no smaller than this. [...]
ceilToDouble() → double
Returns the least double integer value no smaller than this. [...]
clamp(num lowerLimit, num upperLimit) → num
Returns this num clamped to be in the range lowerLimit-upperLimit. [...]
compareTo(num other) → int
Compares this to other. [...]
floor() → int
Returns the greatest integer no greater than this. [...]
floorToDouble() → double
Returns the greatest double integer value no greater than this. [...]
remainder(num other) → num
Returns the remainder of the truncating division of this by other. [...]
round() → int
Returns the integer closest to this. [...]
roundToDouble() → double
Returns the double integer value closest to this. [...]
toDouble() → double
Return this num as a double. [...]
toInt() → int
Truncates this num to an integer and returns the result as an int.
toString() → String
Returns the shortest string that correctly represent the input number. [...]
toStringAsExponential([int fractionDigits ]) → String
Returns an exponential string-representation of this. [...]
toStringAsFixed(int fractionDigits) → String
Returns a decimal-point string-representation of this. [...]
toStringAsPrecision(int precision) → String
Converts this to a double and returns a string representation with exactly precision significant digits. [...]
truncate() → int
Returns the integer obtained by discarding any fractional digits from this. [...]
truncateToDouble() → double
Returns the double integer value obtained by discarding any fractional digits from the double value of this. [...]
noSuchMethod(Invocation invocation) → dynamic
inherited
Invoked when a non-existent method or property is accessed. [...]

Operators

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

Static Methods

parse(String input, [ num onError(String input) ]) → num
Parses a string containing a number literal into a number. [...]
tryParse(String input) → num
Parses a string containing a number literal into a number. [...]

© 2012 the Dart project authors
Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
https://api.dartlang.org/stable/2.0.0/dart-core/num-class.html