JDBtracker
/
libostd
forked from OctaForge/libostd
1
0
Fork 0
Code Issues Pull Requests Releases Wiki Activity

keyset: allow get_key to return by value (still use reference where possible)

master
Daniel Kolesa 2015-08-05 20:05:03 +01:00
parent 50a8562d20
commit 4f23017594
1 changed files with 8 additions and 2 deletions
Show Stats Download Patch File Download Diff File Expand all files Collapse all files

10
ostd/keyset.hh
View File

@ -19,11 +19,17 @@ namespace ostd {
namespace detail {
template<typename T>
using KeysetKey = const Decay<decltype(declval<const T &>().get_key())>;
using KeysetKeyRet = decltype(declval<const T &>().get_key());
template<typename T>
using KeysetKey = const Decay<KeysetKeyRet<T>>;
template<typename T, typename A> struct KeysetBase {
using Key = KeysetKey<T>;
static inline const Key &get_key(const T &e) {
using RetKey = Conditional<
IsReference<KeysetKeyRet<T>>::value, Key &, Key
>;
static inline RetKey get_key(const T &e) {
return e.get_key();
}
static inline T &get_data(T &e) {