Is it ok to double-dereference ("**itOpt") an optional iterator?...

Does passing an std::optional<T> by reference actually save copying?...

Why is it undefined behavior to call operator* on an empty std::optional if I don't access the r...

Is use of empty std::optional<string> UB or not?...

What's the difference between C++23's optional::transform and optional::and_then?...

Is it useful to construct an std::optional using std::in_place when returning from a function?...

Unexpected behavior of std::is_copy_assignable and boost::optional...

error: cannot convert 'std::optional<int>' to 'const int' in initialization...

Writing functions which handle invalid inputs in C++...

Pass-through constructor for std::optional argument...

Iterating over std::optional...

Why does std::optional not have a specialization for reference types?...

namespace std:: does not contain optional...

Is there another way to achieve the functionality of std::optional without another object being crea...

How std::optional library handles emplace operation?...

Getting an optional of a class derived from abstract class, from a class derived from abstract class...

std::optional::transform with std::addressof...

Chain Optionals in C++...

Pass `std::optional::value` to `std::views::transform`...

Interaction between std::optional<std::any> and has_value()...

What's the point of ref-qualified member functions in `std::optional::value`...

How would a std::optional<std::nullopt_t> operate?...

Forward declaration of class inside unique_ptr inside optional with default argument fails...

Why doesn't iterate over a container accessed directly through std::optional<T>::value() w...

optional refence to an object: best way?...

std::minmax_element comparer for a vector with std::optional is incorrect...

Can I make std::optional<std::exception>::value() return the (polymorphic) inherited exception...

Bind reference to T& in both cases, std::optional<T> and T, at compile time...

ranges::views::filter no longer compatible with std::optional, msvc v19.36...

Using std::optional to invalidate my RAII object in move constructor/asignment...