Mark H Weaver <m...@netris.org> writes:
> As a result, some important properties of SRFI-111 boxes do not hold for
> your proposed implementation. For example, in SRFI-111, (box? x)
> implies that (box-ref x) will not raise an exception, and this fact can
> be exploited by a compiler to produce better native code for 'box-ref'
> when the type of its argument is known to be a box. In such cases, I
> guess 'box-ref' can be implemented as a single load instruction, whereas
> 'variable-ref' will require a conditional branch.
s/box-ref/unbox/g
Mark
