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How to use Lambda functions in Dart programming
Maria ElijahLambda functions are a short and simple way to express tiny functions. Lambda functions are also known as arrow functions. Like any other function, a Lambda function cannot execute a block of code.
return_type func_name(parameters)=> expression;
Note: You can only return one expression when using Lambda function syntax, which has to be a single-line expression.
Examples
How to use a Lambda function to add two numbers
// Using lambda function
int addNum(int a, int b) => a + b;
main() {
print(addNum(15, 7));
}Note: A return statement isn’t explicitly required.
How to use a Lambda function to display a message on the screen
void main() {
displayMsg();
}
displayMsg()=>
print("This is a shot on Lambda functions in Dart programming"); How to use a Lambda function to concatenate strings
// Using lambda function
String showData(String a, String b) => a + b;
main() {
print(showData("Educative ", "shot"));
}Finally, if a function only returns one expression, you may use the Lambda function to represent it in only one line.
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