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minor style improvement:

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traits class should have a static const bool value member
This commit is contained in:
Mathew Sutcliffe
2014-03-23 21:01:53 +00:00
parent bfce2d186f
commit 6cf5089b18
2 changed files with 3 additions and 2 deletions
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4
src/blackmisc/tuple.h
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@@ -49,7 +49,7 @@
template <> class TupleConverter<T> \ template <> class TupleConverter<T> \
{ \ { \
friend class T; \ friend class T; \
static_assert(Private::HasEnabledTupleConversion<T>::type::value, \ static_assert(Private::HasEnabledTupleConversion<T>::value, \
"Missing BLACK_ENABLE_TUPLE_CONVERSION macro in " #T); \ "Missing BLACK_ENABLE_TUPLE_CONVERSION macro in " #T); \
static auto toTuple(const T &o) -> decltype(std::tie MEMBERS) \ static auto toTuple(const T &o) -> decltype(std::tie MEMBERS) \
{ \ { \
@@ -78,7 +78,7 @@
template <class U> class TupleConverter<T<U>> \ template <class U> class TupleConverter<T<U>> \
{ \ { \
friend class T<U>; \ friend class T<U>; \
static_assert(Private::HasEnabledTupleConversion<T<U>>::type::value,\ static_assert(Private::HasEnabledTupleConversion<T<U>>::value, \
"Missing BLACK_ENABLE_TUPLE_CONVERSION macro in " #T); \ "Missing BLACK_ENABLE_TUPLE_CONVERSION macro in " #T); \
static auto toTuple(const T<U> &o) -> decltype(std::tie MEMBERS) \ static auto toTuple(const T<U> &o) -> decltype(std::tie MEMBERS) \
{ \ { \

1
src/blackmisc/tuple_private.h
View File

@@ -41,6 +41,7 @@ namespace BlackMisc
struct HasEnabledTupleConversion struct HasEnabledTupleConversion
{ {
typedef decltype(hasEnabledTupleConversionHelper(static_cast<T *>(nullptr))) type; typedef decltype(hasEnabledTupleConversionHelper(static_cast<T *>(nullptr))) type;
static const bool value = type::value;
}; };
// Using tag dispatch to select which implementation of compare() to use // Using tag dispatch to select which implementation of compare() to use