Ballerina

function task2() returns string return "done";

return a / b;

resource function post user(@http:Payload Person p) returns json return id: 123, name: p.name ; ballerina

type Person record string name; int age; string email?; // optional field ; Person p = name: "Alice", age: 30 ; Arrays & Maps int[] numbers = [1, 2, 3]; map<string> colors = red: "#FF0000", green: "#00FF00" ; 5. Services & Listeners A service is a collection of remote methods (resources) attached to a listener (e.g., HTTP listener). HTTP Service Example import ballerina/http; service /api on new http:Listener(9090) resource function get greeting(string name) returns string return "Hello, " + name;

Here’s a comprehensive guide to , a modern, open-source programming language designed for cloud-native application integration and microservices development. 1. What is Ballerina? Ballerina is a graph-oriented, compiled language that treats distributed system integration as a first-class concern. It provides built-in support for network interactions, data transformations, and service resilience, making it ideal for APIs, integrations, and microservices. function task2() returns string return "done"; return a

Ballerina has powerful query expressions and type casts .

import ballerina/test; @Test function testAddition() int result = 2 + 2; test:assertEquals(result, 4); It provides built-in support for network interactions, data

Cloud.toml :

[container.image] repository = "myorg/myapi" name = "myapi" tag = "v1.0" Ballerina includes a built-in test framework.