# bool class

The reserved words `true` and `false` denote objects that are the only instances of this class.

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

## Constructors

bool.fromEnvironment(String name, { bool defaultValue: false })
  Returns the boolean value of the environment declaration `name`. [...]
  const
  factory

## Properties

hashCode → int
  The hash code for this object. [...]
  read-only
runtimeType → Type
  A representation of the runtime type of the object.
  read-only, inherited

## Methods

toString() → String
  Returns `"true"` if the receiver is `true`, or `"false"` if the receiver is `false`.
noSuchMethod(Invocation invocation) → dynamic
  Invoked when a non-existent method or property is accessed. [...]
  inherited

## Operators

operator ==(dynamic other) → bool
  The equality operator. [...]
  inherited