Concept definition

    template<typename U>
    concept immutable_str_compatible =
    std::same_as<std::remove_cvref_t<U>, atomic_str_ptr> ||
    std::same_as<std::decay_t<U>, const char *>

Detailed Description

Concept for types compatible with jh::immutable_str.

Defines the set of types that can safely participate in comparison and hashing operations with immutable_str instances. This allows seamless interoperability between atomic_str_ptr, const char*, and string literals.

Satisfied by atomic_str_ptr (and its cv/ref-qualified variants).
Satisfied by const char*.
Satisfied by string literals such as "hello" (which decay to const char*).
Used internally in custom hash and equality functors to enable transparent lookups, e.g. unordered_map::find("key") without constructing a temporary immutable_str.

Template Parameters

U	Candidate type to test for `immutable_str` compatibility.

Note

Ensures that only pointer-safe, immutable-compatible types are accepted in hashing and equality operations.
String literals are automatically included through pointer decay.