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Postings from March 2005
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.
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