Arrow Functions in Dart
3 min read
Arrow Functions are a short and concise manner to represent functions in Dart. Arrow functions are also called Lambda Functions. But here remember that by using the Arrow function’s syntax you can only return one expression. It must be only one line expression. Just like a normal function, the arrow function cannot have a block of code to execute.
ReturnType functionName(ParameterType parameter) => expression;
- Here also note that we don’t need a return statement explicitly.
int ShowSum(int numOne, int numTwo) => numOne + numTwo;
main() {
print(ShowSum(10, 20));
}
Output
30
ReturnTypeis the type of value that the function will return.functionNameis the name you give to your function.ParameterTypeis the type of the function's parameter.parameteris the actual parameter value.expressionis the single expression that the function will evaluate and return.
Conclusion
Arrow functions are commonly used for creating inline functions and callbacks. They are particularly useful when you need to provide a single expression as the function body. Arrow functions automatically return the result of the expression without needing an explicit return keyword.
So, guys, That’s it for Arrow Functions. And as I always say Please explore it, practice it, and try to understand it conceptually.
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