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code cleanup

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This commit is contained in:
badair
2016-04-01 12:44:38 -05:00
parent c097a46936
commit 49e2b87156
37 changed files with 389 additions and 530 deletions
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21
example/can_invoke_constexpr/function_object.cpp
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@@ -50,22 +50,21 @@ struct add {
static_assert(!ct::can_invoke_constexpr(add{}, T1{}, T2{}), "");
static_assert(!ct::can_invoke_constexpr(add{}, 3, 7), "");
/*
// This last section serves to demonstrate that can_invoke_constexpr
// can only be used with trivially default constructible types. Even
// though 'S' is a constexpr function object, it is incompatible with
// can_invoke_constexpr because it has no trivial default constructor.
// The same restrictions also apply to the supplied arguments.
// Error message: "Cannot perform constexpr checks with this type,
// because it is not trivially default constructible. "
// This last section demonstrates that can_invoke_constexpr will always
// return std::false_type when any of the arguments do not decay to literal
// types. (see http://en.cppreference.com/w/cpp/concept/LiteralType).
// Even though 'S' below is a constexpr function object, it is incompatible
// with can_invoke_constexpr because 'S' isn't literal type.
struct S {
S() = delete;
S(int){};
constexpr int operator()() { return 0; }
};
using S_result = decltype(ct::can_invoke_constexpr(std::declval<S>()));
static_assert(S_result::value, "");
*/
S s{0};
static_assert(!ct::can_invoke_constexpr(s), "");
int main() {}