On 11/11/2012 9:21 PM, Steven Watanabe wrote:
AMDG
On 11/11/2012 06:13 PM, Edward Diener wrote:
No doubt I have had some sort of C++ brain blockage but the following code using boost::mpl::eval_if gives an error and I cannot see how this would be. This is a simplified case of a more serious problem.
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<snip>
template<class T1,class T2,class T3,class T4> struct DDD : boost::mpl::eval_if < boost::mpl::false_, BBB<T1>, AAA<int,int> > { };
<snip>
int main() { bool result = EEE<int,int>::value; return(result ? 1 : 0); }
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Compiling with gcc 4.6.0 in MingW under Windows I get:
test_has_mem_fun.cpp: In function 'int main()': test_has_mem_fun.cpp:50:17: error: 'value' is not a member of 'EEE<int, int>'
<snip>
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I must be overlooking something obvious but I cannot see it. Any help showing me what is wrong would be appreciated.
I think you're missing the ::type after eval_if.
I realized not that I was missing ::type directly after eval_if but after the final expression, which instead of: bool result = EEE<int,int>::value; should be bool result = EEE<int,int>::type::value; Thanks for waking me up about this.