Note: information on this page refers to Ceylon 1.2, not to the current release.

View source | Edit

optional annotation

The optional annotation is applied to module imports which are not strictly required by the module.

Usage 

module com.example.foo "1.0" {
    optional import org.example.bar "4.5.1";
}

Description

An optional dependency will be loaded by the module runtime if it is available, but no error will occur if it is not available.

See also