description

# Random class abstract interface

A generator of random bool, int, or double values.

The default implementation supplies a stream of pseudo-random bits that are not suitable for cryptographic purposes.

Use the Random.secure constructor for cryptographic purposes.

To create a non-negative random integer uniformly distributed in the range from 0, inclusive, to max, exclusive, use nextInt(int max).

    var intValue = Random().nextInt(10); // Value is >= 0 and < 10.
    intValue = Random().nextInt(100) + 50; // Value is >= 50 and < 150.

To create a non-negative random floating point value uniformly distributed in the range from 0.0, inclusive, to 1.0, exclusive, use nextDouble.

    var doubleValue = Random().nextDouble(); // Value is >= 0.0 and < 1.0.
    doubleValue = Random().nextDouble() * 256; // Value is >= 0.0 and < 256.0.

To create a random Boolean value, use nextBool.

    var boolValue = Random().nextBool(); // true or false, with equal chance.

## Constructors

Random([int? seed])
  Creates a random number generator.
  factory
Random.secure()
  Creates a cryptographically secure random number generator.
  factory

## Properties

hashCode → int
  The hash code for this object.
  no setterinherited
runtimeType → Type
  A representation of the runtime type of the object.
  no setterinherited

## Methods

nextBool() → bool
  Generates a random boolean value.
nextDouble() → double
  Generates a non-negative random floating point value uniformly distributed in the range from 0.0, inclusive, to 1.0, exclusive.
nextInt(int max) → int
  Generates a non-negative random integer uniformly distributed in the range from 0, inclusive, to `max`, exclusive.
noSuchMethod(Invocation invocation) → dynamic
  Invoked when a nonexistent method or property is accessed.
  inherited
toString() → String
  A string representation of this object.
  inherited

## Operators

operator ==(Object other) → bool
  The equality operator.
  inherited