// forward-declare the struct struct Foo; class Bar { void myFunction(std::shared_ptr<Foo> foo); }; 在我的cpp文件中: #include "Foo.h" 然而这样做会导致错误: 使用不同类型重新定义typedef(“struct Foo”与“Foo”) 正确的语法是什么? - Frank 那么,我是否正确地假设遗留库是C语言? - Mar...
// A.hstruct std::hash<B>; // Forward declare hash templatestd::unordered_map<B, int> map;// B.h A object;< 浏览3提问于2020-06-25得票数 3 回答已采纳 2回答 相互依存的结构声明 、、 可能重复: struct A{ ...B *ptr; ... A* ptr;但是,由于第二个结构是在第一个结构之后才定义的...
typedef struct mbedtls_ecp_keypair MY_ECC_KEY. (This already works for some structs, like mbedtls_x509_crt) I think this would be useful outside my case as I imagine there are many applications that support mbedtls as well as another implementation, and being able to forward declare types ...
* Use this macro to declare a slate argument.使用这个宏可以为你的正在构建的Widget声明一个参数,这个参数不是一个TAttribute<>类型(属性),只是一个一般数据类型的变量 * Arguments differ from attributes in that they can only be values.Argumet和Attribute的区别在于Argument只能是一个值,而Attitude可以是一...
declare_vec(PointVec, struct Point); typedef struct Dataset { PointVec vertices; PointVec colors; } Dataset; void Dataset_drop(Dataset* self); ... #endif Define and use the "private" container in the c-file: // Dataset.c #include "Dataset.h" #include "Point.h" // struct Point must...
typedef lib_struct::struct_value lib_value; // compiler points here }; // my.h // attempt at forward declaration namespace lib_namespace { class lib_value; }; ... // my.cpp #include "lib.h" Is there a way to forward declare the typedef to avoid the understandable redefinition comp...