[SR-12597] [C++] Import operator[] through some “raw” syntax #55043
Description
| Previous ID | SR-12597 |
| Radar | rdar://problem/62202421 |
| Original Reporter | martinboehme (JIRA User) |
| Type | Sub-task |
Additional Detail from JIRA
| Votes | 0 |
| Component/s | Compiler |
| Labels | Sub-task, CxxInterop |
| Assignee | None |
| Priority | Medium |
md5: e1c4d75c0691c8353843d57d8fde29ec
Parent-Task:
- SR-12595 [C++] Import a non-templated analog to
std::string
cloned to:
- SR-12748 [C++] Import overloaded operators (=, +, -, "", ...)
Issue Description:
We are planning to import `operator[]` as a Swift subscript (SR-12598) as that would be the most ergonomic option for most users. However, that import might not work great for all users. For example, when the C++ `operator[]` returns a reference, most users would want to immediately read or write through it. However, some would want to turn it into a pointer and persist for slightly longer. We should allow that use case in Swift.
struct Example {
int &operator[](int index);
};
Example e;
// regular usage:
std::cout << e[10];
e[10] = 10;
// capturing a pointer:
int *ptr = &e[10];
...
*ptr = 10;