質問編集履歴
2
あ
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@@ -116,6 +116,60 @@
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---
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120
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121
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122
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123
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**欲を言えば**```class A```に変更を加えずに取得したいです
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125
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```cpp
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128
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130
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template <std::size_t N, typename Class, typename Return, typename ... Args>
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constexpr auto getArgType(Return(Class::*)(Args...)) {
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return std::tuple_element_t<N, std::tuple<Args...>>();
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};
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//class Aの記述はこのままに
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struct A {
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A(int) {}
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void hoge(int) {}
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};
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153
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int main() {
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155
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//ここで型を取得する処理
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156
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157
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using ArgType = decltype(getArgType<0>(&A::A));
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159
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160
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std::cout << typeid(ArgType).name();
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}
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```
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119
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## 環境
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120
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121
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c++20
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1
a
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test
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@@ -42,7 +42,7 @@
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-
std::cout << typeid(ArgType).name();
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std::cout << typeid(ArgType).name();//出力 int
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}
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