Re: IDL's temporary() function

[Judd Storrs]

a *= 5;
a += 1;

 

I think this only works when A is already writable without copy in the current scope already. i.e.

function A = test(A)
  A *= 5;
  A += 1;
end

A = test(A);

will allocate a duplicate of A, I think. The idea is that in this case

A = test(temporary(A))

will remove A from the scope of the caller and transport it into the function's
scope and mark it as writable so that the multiplication
doesn't cause A to be duplicated.

--judd