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Improved early type checking in stand-alone functions

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Roland Bock
2013-08-21 19:30:56 +02:00
parent f244f1110a
commit c41a181ca9
1 changed files with 2 additions and 0 deletions
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include/sqlpp11/functions.h
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@@ -39,6 +39,8 @@ namespace sqlpp
template<typename T>\
struct NAME##_t\
{\
static_assert(CONSTRAINT<typename std::decay<T>::type>::value, #NAME "() argument has constraint: " #CONSTRAINT);\
static_assert(is_expression_t<typename std::decay<T>::type>::value, #NAME "() argument has contraint: is_expression_t");\
using _operand = typename operand_t<T, CONSTRAINT>::type;\
\
struct _op\