num class Null safety

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

Constructors

num()

Properties

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

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
Compares this to other. [...]
override
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
Invoked when a non-existent method or property is accessed. [...]
inherited
remainder(num other) → num
The remainder of the truncating division of this by other. [...]
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
The shortest string that correctly represent this number number. [...]
override
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 precision significant 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 other to this number. [...]
operator -(num other) → num
Subtracts other from this number. [...]
operator /(num other) → double
Divides this number by other.
operator <(num other) → bool
Whether other is numerically smaller than this number. [...]
operator <=(num other) → bool
Whether other is numerically smaller than or equal to this number. [...]
operator ==(Object other) → bool
Test whether this value is numerically equal to other. [...]
override
operator >(num other) → bool
Whether other is numerically greater than this number. [...]
operator >=(num other) → bool
Whether other is numerically greater than or equal to this number. [...]
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. [...]