int abstract class

An arbitrarily large integer.

Note: When compiling to JavaScript, integers are implemented as JavaScript numbers. When compiling to JavaScript, integers are therefore restricted to 53 significant bits because all JavaScript numbers are double-precision floating point values. The behavior of the operators and methods in the int class therefore sometimes differs between the Dart VM and Dart code compiled to JavaScript.

It is a compile-time error for a class to attempt to extend or implement int.

Inheritance

Object
num
int

Static Methods

parse(String source, { int radix, int onError(String source) }) → int: Parse source as a, possibly signed, integer literal and return its value.

Constructors

int.fromEnvironment(String name, { int defaultValue }) const factory: 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.
isEven → bool read-only: Returns true if and only if this integer is even.
isOdd → bool read-only: Returns true if and only if this integer is odd.
sign → int read-only: Returns the sign of this integer.
hashCode → int read-only, inherited: The hash code for this object.
isFinite → bool read-only, inherited: True if the number is finite; otherwise, false.
isInfinite → bool read-only, inherited: True if the number is positive infinity or negative infinity; otherwise, false.
isNaN → bool read-only, inherited: True if the number is the double Not-a-Number value; otherwise, false.
isNegative → bool read-only, inherited: True if the number is negative; otherwise, false.
runtimeType → Type read-only, inherited: A representation of the runtime type of the object.

Operators

operator &(int other) → int: Bit-wise and operator.
operator <<(int shiftAmount) → int: Shift the bits of this integer to the left by shiftAmount.
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: 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) → num inherited: Euclidean modulo operator.
operator *(num other) → num inherited: Multiplication operator.
operator +(num other) → num inherited: Addition operator.
operator -(num other) → num inherited: Subtraction operator.
operator /(num other) → double inherited: Division operator.
operator <(num other) → bool inherited: Relational less than operator.
operator <=(num other) → bool inherited: Relational less than or equal operator.
operator ==(Object other) → bool inherited: Test whether this value is numerically equal to other.
operator >(num other) → bool inherited: Relational greater than operator.
operator >=(num other) → bool inherited: Relational greater than or equal operator.
operator ~/(num other) → int inherited: Truncating division operator.

Methods

abs() → int: Returns the absolute value of this integer.
ceil() → int: Returns this.
ceilToDouble() → double: Returns this.toDouble().
floor() → int: Returns this.
floorToDouble() → double: 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 exponent modulo modulus.
round() → int: Returns this.
roundToDouble() → double: Returns this.toDouble().
toRadixString(int radix) → String: Converts this to a string representation in the given radix.
toSigned(int width) → int: Returns the least significant width bits of this integer, extending the highest retained bit to the sign. This is the same as truncating the value to fit in width bits using an signed 2-s complement representation. The returned value has the same bit value in all positions higher than width.
toString() → String: Returns a String-representation of this integer.
toUnsigned(int width) → int: Returns the least significant width bits of this integer as a non-negative number (i.e. unsigned representation). The returned value has zeros in all bit positions higher than width.
truncate() → int: Returns this.
truncateToDouble() → double: 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.
noSuchMethod(Invocation invocation) → dynamic inherited: Invoked when a non-existent method or property is accessed.
remainder(num other) → num inherited: Returns the remainder of the truncating division of this by other.
toDouble() → double inherited: Return this num as a double.
toInt() → int inherited: Truncates this num to an integer and returns the result as an int.
toStringAsExponential([int fractionDigits ]) → String inherited: Returns an exponential string-representation of this.
toStringAsFixed(int fractionDigits) → String inherited: Returns a decimal-point string-representation of this.
toStringAsPrecision(int precision) → String inherited: Converts this to a double and returns a string representation with exactly precision significant digits.

© 2012 the Dart project authors
Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
https://api.dartlang.org/stable/1.24.3/dart-core/int-class.html