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.
See also:
- int: An integer number.
- double: A double-precision floating point number.
- Numbers in A tour of the Dart language.
- Implemented types
- Implementers
Constructors
- num()
Properties
- hashCode → int read-onlyoverride
- Returns a hash code for a numerical value.
- isFinite → bool read-only
- Whether this number is finite.
- isInfinite → bool read-only
- Whether this number is positive infinity or negative infinity.
- isNaN → bool read-only
- Whether this number is a Not-a-Number value.
- isNegative → bool read-only
- Whether this number is negative.
- runtimeType → Type read-onlyinherited
- A representation of the runtime type of the object.
- sign → num read-only
- Negative one, zero or positive one depending on the sign and numerical value of this number.
Methods
- abs(
) → num - The absolute value of this number.
- ceil(
) → int - 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 - The greatest integer no greater than this number.
- floorToDouble(
) → double - Returns the greatest double integer value no greater than
this. - noSuchMethod(
Invocation invocation) → dynamic inherited - Invoked when a non-existent method or property is accessed.
- remainder(
num other) → num - The remainder of the truncating division of
thisbyother. - round(
) → int - The integer closest to this number.
- roundToDouble(
) → double - The double integer value closest to this value.
- toDouble(
) → double - This number as a double.
- toInt(
) → int - Truncates this num to an integer and returns the result as an int.
- toString(
) → String override - The shortest string that correctly represents this number.
- toStringAsExponential(
[int? fractionDigits]) → String - An exponential string-representation of this number.
- toStringAsFixed(
int fractionDigits) → String - A decimal-point string-representation of this number.
- toStringAsPrecision(
int precision) → String - A string representation with
precisionsignificant digits. - truncate(
) → int - 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.
Operators
- operator %(
num other) → num - Euclidean modulo of this number by
other. - operator *(
num other) → num - Multiplies this number by
other. - operator +(
num other) → num - Adds
otherto this number. - operator -(
num other) → num - Subtracts
otherfrom this number. - operator /(
num other) → double - Divides this number by
other. - operator <(
num other) → bool - Whether this number is numerically smaller than
other. - operator <=(
num other) → bool - Whether this number is numerically smaller than or equal to
other. - operator ==(
Object other) → bool override - Test whether this value is numerically equal to
other. - operator >(
num other) → bool - Whether this number is numerically greater than
other. - operator >=(
num other) → bool - Whether this number is numerically greater than or equal to
other. - operator unary-(
) → num - The negation of this value.
- 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 BSD 3-Clause "New" or "Revised" License.
https://api.dart.dev/stable/2.19.6/dart-core/num-class.html
