Exclude a specified list of columns

I would like to see a new function that excludes a specified list of columns

    

obj << exclude columns( <{column 1, column 2, ......}> | <[ column #, column # ....]>)

 

Examples:

dt << exclude columns( {:A, :B } );
dt << exclude columns( index( 5, 7 ) );
dt << exclude columns( dt << get selected columns );

 

 

Tracking Number:

Defect ID: S1517298