Late Variables

Late Variables

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In Dart, a late variable is a way to declare a variable without initializing it immediately, but you promise to initialize it before you use it. It's a way to tell Dart that you will assign a value to the variable later, and Dart allows this delayed initialization.

Here's a simple explanation:

dartCopy codevoid main() {
  // Declare a late variable
  late String lateVariable;

  // Later in the code, initialize the variable
  lateVariable = "Hello, Dart!";

  // Now you can use the initialized variable
  print(lateVariable);  // Output: "Hello, Dart!"
}

In this example, we declare a late String lateVariable; without assigning it a value immediately. Later in the code, we assign the value "Hello, Dart!" to lateVariable. The late keyword indicates that Dart shouldn't enforce immediate initialization but trusts you to initialize it before using it.

It's important to note that if you try to use a late variable before initializing it, or if you forget to initialize it altogether, it will result in a runtime error. So, use late variables responsibly and make sure to initialize them before accessing their values.

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