In-place attribute removal

[alvi_kabir919]

Is there any way to do this?  `# looks to always be creating a copy of the original list for  `g/`u, whether it's applied on a list reference or value. I wrote a C function to set the list object's u member (x->u) to 0, and from within q called this function and followed it up with re-applying the attribute (`g#) and this combination seems to clear the attribute without making a copy and also removes the references to the previous attribute data, allowing it to be garbage collected by .Q.gc[]. Is there another way? Thanks in advance.

[Laura]

Thanks for your question @alvi_kabir919 !

Looking forward to seeing if the community can suggest a way of achieving this. 

Thanks,

Laura

[gyorokpeter-kx]

According to the docs at Set Attribute | Reference | kdb+ and q documentation - Kdb+ and q documentation (kx.com) :

Setting or unsetting an attribute other than sorted causes a copy of the object to be made.

Using a C function as a workaround might work but it might also break in a future version when kdb+ internals change.