xlang

// 你的第一个 xlang 程序
func main(...) as int
    print("Hello, xlang!")
    return 0
end

string name = "xlang"
print(f"Hello {name}!")

time t = #2026-07-06 12:30:00#
print(time.formatPattern(t, "yyyy-mm-dd hh:mm"))

class Animal
    string name = ""

    create(string name)
        self.name = name
    end

    virtual func speak() as string
        return "..."
    end
end

class Dog extends Animal
    create(string name)
        base(name)
    end

    override func speak() as string
        return self.name + ": Woof!"
    end
end

async func addAsync(int a, int b) as int
    return a + b
end

future<int> a = addAsync(1, 2)
future<int> b = addAsync(3, 4)

array<int> all = await task.all([a, b])
print(all)

func numbers(int count) as generator<int>
    int i = 0
    while i < count
        i += 1
        yield i
    end
end

func main(...) as int
    for value in numbers(5)
        print(value)
    end
    return 0
end

class Packet
    derive json
    derive copy

    int id = 0
    string name = ""
end

auto p = Packet()
p.id = 42
p.name = "hello"

string text = json.stringify(p)
print(text)

auto p2 = json.parse::<Packet>(text)
print(p2.name)