semantics

问题 The void type in C seems to be strange from various different situations. Sometimes it behaves like a normal object type, such as int or char , and sometimes it just means nothing (as it should). Look at my snippet. First of all, it seems strange that you can declare a void object, meaning you just declare nothing. Then I created an int variable and casted its result to void , discarding it: If an expression of any other type is evaluated as a void expression, its value or designator is

问题 I am trying to understand when an iterator::value_type is actually used. Because, all operators of iterators, seem to use only iterator::pointer and iterator::reference . Question: Is iterator::value_type actually used for something? Extra question: Would an iterator inherited from std::iterator<std::random_access_iterator_tag, int, std::ptrdiff_t, bool*, bool&> raise some semantic issues? EDIT: To understand why I am asking this question, it's because I am working on an iterator for a type

来源： https://stackoverflow.com/questions/64158453/clang-retrieving-the-initialization-value-for-a-parmvardecl

来源： https://stackoverflow.com/questions/64158453/clang-retrieving-the-initialization-value-for-a-parmvardecl

来源： https://stackoverflow.com/questions/2501892/are-rdf-triple-stores-suitable-for-everyday-programming

来源： https://stackoverflow.com/questions/2501892/are-rdf-triple-stores-suitable-for-everyday-programming

来源： https://stackoverflow.com/questions/13330067/rpc-semantics-what-exactly-is-the-purpose

来源： https://stackoverflow.com/questions/1786522/how-different-are-the-semantics-between-python-and-javascript

来源： https://stackoverflow.com/questions/63995894/why-can-we-assign-a-struct-pointer-to-an-interface-variable-even-though-the-stru

来源： https://stackoverflow.com/questions/63995894/why-can-we-assign-a-struct-pointer-to-an-interface-variable-even-though-the-stru