Support named arguments for functions
Now vala cannot pass named arguments to a function, so we must pass all arguments of functions with default values:
var sized = new Array<int?>.sized (true, true, sizeof (int?), 100);
Maybe we can support:
var sized = new Array<int?>.sized (reserved_size:100);
And let Vala automatically write the default value of the arguments we didn't pass.
Edited by Zhou Qiankang