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.

- Implemented types
- Implementers

- num()

- hashCode → int read-only, override
- Returns a hash code for a numerical value. [...]
- isFinite → bool read-only
- True if the number is finite; otherwise, false. [...]
- isInfinite → bool read-only
- True if the number is positive infinity or negative infinity; otherwise, false.
- isNaN → bool read-only
- True if the number is the double Not-a-Number value; otherwise, false.
- isNegative → bool read-only
- True if the number is negative; otherwise, false. [...]
- sign → num read-only
- Returns minus one, zero or plus one depending on the sign and numerical value of the number. [...]
- runtimeType → Type read-only, inherited
- A representation of the runtime type of the object.

- 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 override - 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 override - 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. [...]

- 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 override - 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. [...]

- 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.dart.dev/stable/2.5.0/dart-core/num-class.html