回答編集履歴
1
update
test
CHANGED
|
@@ -17,3 +17,23 @@
|
|
|
17
17
|
|
|
18
18
|
|
|
19
19
|
Demo: [https://wandbox.org/permlink/KE2Y3rrXjRdKwxjA](https://wandbox.org/permlink/KE2Y3rrXjRdKwxjA)
|
|
20
|
+
|
|
21
|
+
|
|
22
|
+
|
|
23
|
+
---
|
|
24
|
+
|
|
25
|
+
**追記：** 上記コードはGCCで通りますが、Clangではエラーになります。
|
|
26
|
+
|
|
27
|
+
|
|
28
|
+
|
|
29
|
+
StackOverflowに同じトピック"[Can I implement an autonomous `self` member type in C++?](http://stackoverflow.com/questions/21143835/)"があり、どうもC++14（C++1z/17でも？）現在は実現不可能な気がしてきました。
|
|
30
|
+
|
|
31
|
+
|
|
32
|
+
|
|
33
|
+
C++14(N3937) [expr.prim.general]/paragraph 3によれば、`this`キーワードをstaticメンバ関数の宣言中で用いるのはNGと読めます（太字部）。C++1z/17(N4659)では[expr.prim.this]/p2。
|
|
34
|
+
|
|
35
|
+
|
|
36
|
+
|
|
37
|
+
> If a declaration declares a member function or member function template of a class `X`, the expression `this` is a prvalue of type "pointer to __cv-qualifier-seq__ `X`" [...] It shall not appear before the optional __cv-qualifier-seq__ and **it shall not appear within the declaration of a static member function** (although its type and value category are defined within a static member function as they are within a non-static member function). [...]
|
|
38
|
+
|
|
39
|
+
|