bool class - dart:core library (original) (raw)

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.

Available extensions

• BoolAddress
• BoolToJSBoolean

Constructors

bool.fromEnvironment(String name, {bool defaultValue = false})

Boolean value for name in the compilation configuration environment.

const

factory

bool.hasEnvironment(String name)

Whether name is declared in the compilation configuration environment.

const

factory

Properties

address ↔ Pointer<Never>

Available on bool, provided by the BoolAddress extension

The memory address of the underlying data.

getter/setter pair

hashCode → int

The hash code for this object.

no setteroverride

runtimeType → Type

A representation of the runtime type of the object.

no setterinherited

toJS → JSBoolean

Available on bool, provided by the BoolToJSBoolean extension

Converts this bool to a JSBoolean.

no setter

Methods

noSuchMethod(Invocation invocation)→ dynamic

Invoked when a nonexistent 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.

Static Methods

parse(String source, {bool caseSensitive = true})→ bool

Parses source as an, optionally case-insensitive, boolean literal.

tryParse(String source, {bool caseSensitive = true})→ bool?

Parses source as an, optionally case-insensitive, boolean literal.