int 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.
Constructors
- int.fromEnvironment(String name, { int defaultValue })
-
Returns the integer value of the given environment declaration
name. [...]constfactory
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
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
exponentmodulomodulus. [...] -
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
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 - Returns a String-representation of this integer. [...]
-
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 -
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
thisbyother. [...]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
thisto a double and returns a string representation with exactlyprecisionsignificant digits. [...]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