Why is there no named parameter support?

[Yuxuan Shui via Digitalmars-d-learn]

Is there any reasons/difficulties for not implementing named 
parameters?

There is clearly a need:
http://forum.dlang.org/thread/wokfqqbexazcguffw...@forum.dlang.org#post-pxndhoskpjxvnoacajaz:40forum.dlang.org