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

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 })

Returns the integer value of the given environment declaration name.

const
factory

Properties

bitLength → int

Returns the minimum number of bits required to store this integer.

read-only
isEven → bool

Returns true if and only if this integer is even.

read-only
isOdd → bool

Returns true if and only if this integer is odd.

read-only
sign → int

Returns the sign of this integer.

read-only
hashCode → int

The hash code for this object.

read-only, inherited
isFinite → bool

True if the number is finite; otherwise, false.

read-only, inherited
isInfinite → bool

True if the number is positive infinity or negative infinity; otherwise, false.

read-only, inherited
isNaN → bool

True if the number is the double Not-a-Number value; otherwise, false.

read-only, inherited
isNegative → bool

True if the number is negative; otherwise, false.

read-only, inherited
runtimeType → Type

A representation of the runtime type of the object.

read-only, inherited

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

Euclidean modulo operator.

inherited
operator *(num other) → num

Multiplication operator.

inherited
operator +(num other) → num

Addition operator.

inherited
operator -(num other) → num

Subtraction operator.

inherited
operator /(num other) → double

Division operator.

inherited
operator <(num other) → bool

Relational less than operator.

inherited
operator <=(num other) → bool

Relational less than or equal operator.

inherited
operator ==(Object other) → bool

Test whether this value is numerically equal to other.

inherited
operator >(num other) → bool

Relational greater than operator.

inherited
operator >=(num other) → bool

Relational greater than or equal operator.

inherited
operator ~/(num other) → int

Truncating division operator.

inherited

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

Returns this num clamped to be in the range lowerLimit-upperLimit.

inherited
compareTo(num other) → int

Compares this to other.

inherited
noSuchMethod(Invocation invocation) → dynamic

Invoked when a non-existent method or property is accessed.

inherited
remainder(num other) → num

Returns the remainder of the truncating division of this by other.

inherited
toDouble() → double

Return this num as a double.

inherited
toInt() → int

Truncates this num to an integer and returns the result as an int.

inherited
toStringAsExponential([int fractionDigits ]) → String

Returns an exponential string-representation of this.

inherited
toStringAsFixed(int fractionDigits) → String

Returns a decimal-point string-representation of this.

inherited
toStringAsPrecision(int precision) → String

Converts this to a double and returns a string representation with exactly precision significant digits.

inherited