Created attachment 222448 [details]
Simple example showing compilation failure

A compilation error occurs when trying to do something like the following:

[indent=4]
uses
    Gee

class ObservableArrayList of C : Gee.ArrayList of C
    delegate Changed(index:int, added:list of C, removed:list of C) : bool
    
    def changed(a:int, b:list of C, c:list of C)
        return


$ valac --pkg=gee-1.0 -C gobjectlistmodel.gs
gobjectlistmodel.gs:6.57-6.57: error: syntax error, expected `)' but got `:' with previous identifier
    delegate Changed(index:int, added:list of C, removed:list of C) : bool
                                                        ^
gobjectlistmodel.gs:8.38-8.38: error: syntax error, expected `)' but got `:' with previous identifier
    def changed(a:int, b:list of C, c:list of C)
                                     ^
Compilation failed: 2 error(s), 0 warning(s)



This all works if only a single generic parameter is used.