bool class Null safety

The reserved words true and false denote objects that are the only two 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
bool.hasEnvironment(String name)
Whether there is an environment declaration name.
const
factory

Properties

hashCode int
The hash code for this object.
read-onlyoverride
runtimeType Type
A representation of the runtime type of the object.
read-onlyinherited

Methods

noSuchMethod(Invocation invocation) → dynamic
Invoked when a non-existent method or property is accessed.
inherited
toString() String
Returns either "true" for true and "false" for false.
override

Operators

operator &(bool other) bool
The logical conjunction ("and") of this and other.
operator ==(Object other) bool
The equality operator.
inherited
operator ^(bool other) bool
The logical exclusive disjunction ("exclusive or") of this and other.
operator |(bool other) bool
The logical disjunction ("inclusive or") of this and other.