Function notmuch_sys::notmuch_messages_valid

pub unsafe extern "C" fn notmuch_messages_valid(
    messages: *mut notmuch_messages_t
) -> notmuch_bool_t

Is the given 'messages' iterator pointing at a valid message.

When this function returns TRUE, notmuch_messages_get will return a valid object. Whereas when this function returns FALSE, notmuch_messages_get will return NULL.

See the documentation of notmuch_query_search_messages for example code showing how to iterate over a notmuch_messages_t object.