int|error result = divide(10, 0); if result is error io:println("Error: ", result.message());
worker w2 returns int return 20;
Call:
function externalCall() returns string|error return error("Network failure"); ballerina
bal --version A Ballerina program is organized into modules (like packages). Each .bal file contains imports, functions, services, and listeners. Hello World import ballerina/io; public function main() io:println("Hello, World!"); int|error result = divide(10, 0); if result is
curl -fsSL https://dist.ballerina.io/downloads/install.sh | bash Use the MSI installer. int|error result = divide(10