🚀 Dart Functions

Learn how to create and use functions in Dart the smart way!
In this guide, we’ll cover:

1. Normal Functions
2. Named Parameters (with required)
3. Arrow Functions

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1️⃣ Normal Function

A normal function is the standard way to define a function in Dart.

✅ You define:

• Return type (optional but recommended)
• Function name
• Parameters in parentheses
• Code block inside {}

// Normal function example
int add(int a, int b) {
  return a + b;
}

void main() {
  print(add(5, 3)); // Output: 8
}

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2️⃣ Named Parameters with required

• Named parameters make your function more readable.
• Pass arguments in any order.
• Wrap parameters in {}.
• Use required if a parameter must be provided.
• Use default values for optional parameters.

// Function with named parameters
void greet({required String name, int age = 0}) {
  print("Hello $name, Age: $age");
}

void main() {
  greet(name: "Kulani", age: 25); // Hello Kulani, Age: 25
  greet(name: "Sharada");         // Hello Sharada, Age: 0
}

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3️⃣ Arrow Function

• Arrow functions are shortcuts for single-expression functions.
• They use => instead of {} and return.

// Arrow function example
int multiply(int a, int b) => a * b;

void main() {
  print(multiply(4, 5)); // Output: 20
}

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