bool class
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}) constfactory
- Returns the boolean value of the environment declaration
name
. [...] - bool.hasEnvironment(String name) constfactory
- Whether there is an environment declaration
name
. [...]
Properties
- hashCode → int read-only, override
- The hash code for this object. [...]
- runtimeType → Type read-only, inherited
- A representation of the runtime type of the object.
Methods
- noSuchMethod(
Invocation invocation) → dynamic inherited - Invoked when a non-existent method or property is accessed. [...]
- toString(
) → String override - Returns either
"true"
fortrue
and"false"
forfalse
.
Operators
- operator &(
bool other) → bool @Since("2.1") - The logical conjunction ("and") of this and
other
. [...] - operator ==(
Object other) → bool inherited - The equality operator. [...]
- operator ^(
bool other) → bool @Since("2.1") - The logical exclusive disjunction ("exclusive or") of this and
other
. [...] - operator |(
bool other) → bool @Since("2.1") - The logical disjunction ("inclusive or") of this and
other
. [...]
© 2012 the Dart project authors
Licensed under the Creative Commons Attribution-ShareAlike License v4.0.
https://api.dart.dev/stable/2.13.0/dart-core/bool-class.html