We can use = {} for default arg values in function declarations

This commit is contained in:
David Capello 2024-07-19 17:10:39 -03:00
parent 9da10605d3
commit 3c44831831

View File

@ -156,5 +156,11 @@ targetting macOS 10.9, some notes are added about this:
* You can use `<atomic>`, `<thread>`, `<mutex>`, and `<condition_variable>` * You can use `<atomic>`, `<thread>`, `<mutex>`, and `<condition_variable>`
* Prefer `using T = ...;` instead of `typedef ... T` * Prefer `using T = ...;` instead of `typedef ... T`
* Use `[[fallthrough]]` if needed * Use `[[fallthrough]]` if needed
* Use `= {}` only to specify a default argument value of an
user-defined type in a function declaration, e.g.
`void func(const std::string& s = {}) { ... }`.
In other cases (e.g. a member variable of an user-defined type)
it's not required or we prefer to use the explicit value
for built-in types (`int m_var = 0;`).
* We use gcc 9.2 or clang 9.0 on Linux, so check the features available in * We use gcc 9.2 or clang 9.0 on Linux, so check the features available in
https://en.cppreference.com/w/cpp/compiler_support https://en.cppreference.com/w/cpp/compiler_support