Re: Pass by Reference
- Posted by petelomax Jan 09, 2015
- 2404 views
jimcbrown said...
Doesn't Phix already do something similar to this?
Yes, though quite a few bugs have been fixed in that area but never released, and the next one is still some months off.
When it is a local variable, since that can never be seen/referenced by the code being called,
local = somefunc(...,local,...)
the lhs gets set to <unassigned> over the call. Similar handling exists for
local[i][j] = somefunc(...,local[i][j],...)
though in that case the element gets set to 0, and there is also multiple assignment to consider.
There is a pointless benchmark/test case I have somewhere showing a 400-fold performance gain, though to be honest real-world gains are likely to be extremely rare, and tiny.
Pete
