Re: Adding linear interpolation to an array

[Dave Whipp]

Thomas Sandlaß wrote:
Or perhaps even
sub foo (Num @in is copy does LinearInterpolation)
{
   ...
}

This is my big questionmark on roles: is the above a contraint
or merely a directive. In the former case only Arrays of Num that
do LinearInterpolation are allowed, in the latter case every
Array of Num that is used as argument gets the role attached while
it lingers in foo.
Perhaps a new keyword/opertor is need to separate the constraints from 
the directives. C<that> would read nicely:

  sub foo ( Num @in is copy that does LinearInterpolation )
Dave.