Functions in UDL

All top-level functions get exposed through the UDL's namespace block.

The UDL file will look like:

namespace Example {
    string hello_world();
}

Default values

Function arguments can be marked optional with a default value specified.

In the UDL file:

namespace Example {
    string hello_name(optional string name = "world");
}

Async

Async functions can be exposed using the [Async] attribute:

namespace Example {
    [Async]
    string async_hello();
}