PrfDouble class
A type-safe wrapper for storing and retrieving double values in SharedPreferences.
Use this class for storing floating-point numbers like ratings, percentages, coordinates, or any decimal values.
Example:
final userRating = PrfDouble('user_rating', defaultValue: 0.0);
await userRating.set(4.5);
final rating = await userRating.get(); // 4.5
- Inheritance
-
- Object
- PrfVariable<
double> - PrfDouble
Constructors
- PrfDouble.new(String key, {double? defaultValue})
-
Creates a new double preference variable with the specified
key.
Properties
- defaultValue → double?
-
Default value to use when no value is stored yet.
finalinherited
- hashCode → int
-
The hash code for this object.
no setterinherited
- key → String
-
Unique key used to store this variable in SharedPreferences.
finalinherited
- runtimeType → Type
-
A representation of the runtime type of the object.
no setterinherited
Methods
-
getValue(
SharedPreferencesAsync prefs) → Future< double?> -
Retrieves the current value from cache or SharedPreferences.
inherited
-
isValueNull(
SharedPreferencesAsync prefs) → Future< bool> -
Checks if the current value is null.
inherited
-
noSuchMethod(
Invocation invocation) → dynamic -
Invoked when a nonexistent method or property is accessed.
inherited
-
removeValue(
SharedPreferencesAsync prefs) → Future< void> -
Removes the value from both the cache and SharedPreferences.
inherited
-
setValue(
SharedPreferencesAsync prefs, double value) → Future< void> -
Saves a new value to SharedPreferences and updates the cache.
inherited
-
toString(
) → String -
A string representation of this object.
inherited
Operators
-
operator ==(
Object other) → bool -
The equality operator.
inherited