Junior — Middle
Mis vahe on modifikaatoritel final ja const programmeerimiskeeles?
sobes.tech AI
Vastus AI-lt
In the Dart language (used in Flutter), the modifiers final and const are used to declare immutable values, but they have different characteristics:
-
finalmeans that the variable can be initialized only once, but the initialization can occur at runtime. For example, the value can be obtained during program execution. -
constmeans that the variable's value is a compile-time constant, meaning it is known and fixed before the program starts.
Example:
final DateTime now = DateTime.now(); // can be assigned only once, but the value is determined at runtime
const int maxCount = 100; // the value is known at compile time and will not change