int class
An integer number.
The default implementation of int is 64-bit two's complement integers with operations that wrap to that range on overflow.
Note: When compiling to JavaScript, integers are restricted to values that can be represented exactly by double-precision floating point values. The available integer values include all integers between -2^53 and 2^53, and some integers with larger magnitude. That includes some integers larger than 2^63. The behavior of the operators and methods in the int class therefore sometimes differs between the Dart VM and Dart code compiled to JavaScript. For example, the bitwise operators truncate their operands to 32-bit integers when compiled to JavaScript.
Classes cannot extend, implement, or mix in int.
Constructors
- int.fromEnvironment(String name, {int defaultValue = 0}) constfactory
- Returns the integer value of the given environment declaration
name. [...]
Properties
- bitLength → int read-only
- Returns the minimum number of bits required to store this integer. [...]
- hashCode → int read-only, inherited
- Returns a hash code for a numerical value. [...]
- isEven → bool read-only
- Returns true if and only if this integer is even.
- isFinite → bool read-only, inherited
- Whether the number is finite. [...]
- isInfinite → bool read-only, inherited
- Whether the number is positive infinity or negative infinity.
- isNaN → bool read-only, inherited
- Whether the number is the double Not-a-Number value.
- isNegative → bool read-only, inherited
- Whether if the number is negative. [...]
- isOdd → bool read-only
- Returns true if and only if this integer is odd.
- runtimeType → Type read-only, inherited
- A representation of the runtime type of the object.
- sign → int read-only, override
- Returns the sign of this integer. [...]
Methods
- abs(
) → int override - Returns the absolute value of this integer. [...]
- ceil(
) → int override - Returns
this. - ceilToDouble(
) → double override - Returns
this.toDouble(). - clamp(
num lowerLimit, num upperLimit) → num inherited - Returns this num clamped to be in the range
lowerLimit-upperLimit. [...] - compareTo(
num other) → int inherited - Compares this to
other. [...] - floor(
) → int override - Returns
this. - floorToDouble(
) → double override - Returns
this.toDouble(). - gcd(
int other) → int - Returns the greatest common divisor of this integer and
other. [...] - modInverse(
int modulus) → int - Returns the modular multiplicative inverse of this integer modulo
modulus. [...] - modPow(
int exponent, int modulus) → int - Returns this integer to the power of
exponentmodulomodulus. [...] - noSuchMethod(
Invocation invocation) → dynamic inherited - Invoked when a non-existent method or property is accessed. [...]
- remainder(
num other) → num inherited - The remainder of the truncating division of
thisbyother. [...] - round(
) → int override - Returns
this. - roundToDouble(
) → double override - Returns
this.toDouble(). - toDouble(
) → double inherited - This number as a double. [...]
- toInt(
) → int inherited - Truncates this num to an integer and returns the result as an int. [...]
- toRadixString(
int radix) → String - Converts this to a string representation in the given
radix. [...] - toSigned(
int width) → int - Returns the least significant
widthbits of this integer, extending the highest retained bit to the sign. This is the same as truncating the value to fit inwidthbits using an signed 2-s complement representation. The returned value has the same bit value in all positions higher thanwidth. [...] - toString(
) → String override - Returns a string representation of this integer. [...]
- toStringAsExponential(
[int? fractionDigits]) → String inherited - An exponential string-representation of this number. [...]
- toStringAsFixed(
int fractionDigits) → String inherited - A decimal-point string-representation of this number. [...]
- toStringAsPrecision(
int precision) → String inherited - A string representation with
precisionsignificant digits. [...] - toUnsigned(
int width) → int - Returns the least significant
widthbits of this integer as a non-negative number (i.e. unsigned representation). The returned value has zeros in all bit positions higher thanwidth. [...] - truncate(
) → int override - Returns
this. - truncateToDouble(
) → double override - Returns
this.toDouble().
Operators
- operator %(
num other) → num inherited - Euclidean modulo of this number by
other. [...] - operator &(
int other) → int - Bit-wise and operator. [...]
- operator *(
num other) → num inherited - Multiplies this number by
other. [...] - operator +(
num other) → num inherited - Adds
otherto this number. [...] - operator -(
num other) → num inherited - Subtracts
otherfrom this number. [...] - operator /(
num other) → double inherited - Divides this number by
other. - operator <(
num other) → bool inherited - Whether
otheris numerically smaller than this number. [...] - operator <<(
int shiftAmount) → int - Shift the bits of this integer to the left by
shiftAmount. [...] - operator <=(
num other) → bool inherited - Whether
otheris numerically smaller than or equal to this number. [...] - operator ==(
Object other) → bool inherited - Test whether this value is numerically equal to
other. [...] - operator >(
num other) → bool inherited - Whether
otheris numerically greater than this number. [...] - operator >=(
num other) → bool inherited - Whether
otheris numerically greater than or equal to this number. [...] - operator >>(
int shiftAmount) → int - Shift the bits of this integer to the right by
shiftAmount. [...] - operator ^(
int other) → int - Bit-wise exclusive-or operator. [...]
- operator unary-(
) → int override - Return the negative value of this integer. [...]
- operator |(
int other) → int - Bit-wise or operator. [...]
- operator ~(
) → int - The bit-wise negate operator. [...]
- operator ~/(
num other) → int inherited - Truncating division operator. [...]
Static Methods
- parse(
String source, {int? radix, int onError(String source)}) → int override - Parse
sourceas a, possibly signed, integer literal and return its value. [...] - tryParse(
String source, {int? radix}) → int? override - Parse
sourceas a, possibly signed, integer literal. [...]
© 2012 the Dart project authors
Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
https://api.dart.dev/stable/2.13.0/dart-core/int-class.html