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# Dart Static Getter
A static getter in Dart is a class-level accessor method defined using the `static` and `get` keywords. It allows read-only access to a computed or encapsulated value directly through the class identifier, rather than through an instantiated object. Because it is bound to the class's namespace and executes in a static context, a static getter cannot access instance members or the `this` reference.
## Syntax
A static getter is declared inside a class using the `static` modifier followed by the return type, the `get` keyword, and the identifier. It can be written using either a block body or an arrow (`=>`) expression.
```dart theme={"dark"}
class ClassName {
// Block body syntax
static ReturnType get propertyName {
return expression;
}
// Arrow syntax
static ReturnType get otherPropertyName => expression;
}
```
## Technical Characteristics
* **Invocation:** Static getters are invoked directly on the class name without parentheses. The syntax is identical to accessing a static variable (`ClassName.propertyName`).
* **Scope Restrictions:** The execution context of a static getter is strictly limited to the class level. Attempting to reference `this` or any non-static variables/methods within the getter's body will result in a compile-time error.
* **Accessing Internal State:** Static getters are frequently used to expose private static variables (denoted by a leading underscore `_`).
* **Read-Only Nature:** Defining a static getter without a corresponding static setter makes the property read-only to the caller. The underlying value can only be mutated if the class provides a separate mechanism to modify the internal static state.
## Code Example
```dart theme={"dark"}
class Configuration {
// Private static variable
static String _environment = 'development';
// Static getter exposing the private variable
static String get environment => _environment;
// Static getter computing a value
static bool get isProduction {
return _environment == 'production';
}
}
void main() {
// Invoked on the class itself, no parentheses required
print(Configuration.environment);
print(Configuration.isProduction);
}
```
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