Eric Lemings wrote:
Propose adding the following defs (or something similar) to
<rw/_meta_help.h> primarily for our own convenience:
template <bool _Bool>
class __rw_bool_const: public __rw_integral_constant<bool, _Bool> {};
I was going to suggest the same thing this morning when I noticed
how pervasive __rw_integral_constant<bool, _Bool> seems to be in
traits definitions (I count 41 occurrences) and thinking that it
would make them less verbose. (With a different spelling of _Bool
to avoid potential clashes with the C99 name.)
I didn't because the only beneficiaries of the change would be us
(a fairly small notational convenience) and I wasn't sure the cost
in terms of the added complexity and compilation time was worth it.
I contemplated suggesting a macro for the same purpose instead but
decided against it on the assumption that it probably wouldn't be
very popular ;-) But now that the cat's out of the bag and you're
asking about alternatives let me throw it out there:
#define _RWSTD_BOOL_CONST(B) _RW::__rw_integral_constant<bool, B>
Usage:
_RW::__rw_bool_const<bool, false>
vs
_RWSTD_BOOL_CONST (false)
template <int _Int>
class __rw_int_const: public __rw_integral_constant<int, _Int> {};
template <_RWSTD_SIZE_T _Size>
class __rw_size_const: public __rw_integral_constant<_RWSTD_SIZE_T,
_Size> {};
The name __rw_integral_constant is a bit too long for the amount of
usage that I'm anticipating.
AFAICS, there are just 9 occurrences of the size_t specializations
but none of the int one.
Martin
Or am I being premature?
Thoughts? Alternatives?
Brad.
