This means that in order to forward-declare std::wstring you'd have to forward-declare std::char_traits<> and std::basic_string<> inside namespace std. Because (apart from a few exceptions) the standard forbids adding definitions or declarations to namespace std (17.4.3.1/1) ultimately yo...
1 struct forward declaration in C 1 invalid forward declaration of struct 6 C forward declaration of struct in header 1 compiler giving error on forward struct declaration 2 Why does forward declaration of struct not work? 1 Cannot forward declare a typedef? 1 Forward Struct Declaration in...
Why can't I forward declare myotherstruct? Jul 19, 2012 at 11:44am Need4Sleep(570) what error do you get? EDIT: whoops, didnt see Try this: 1 2 3 4 5 typedefstructmystruct {inti;doublef; } myotherstruct; Last edited onJul 19, 2012 at 11:47am ...
C / C++ 23 3882 Forward declare a templatized class by: mark.moore | last post by: I know this has been asked before, but I just can't find the answer in the sea of hits... How do you forward declare a class that is *not* paramaterized, but is based on a template cla...
Don't use that old C-style typedef stuff. Just declare the struct like this: struct STREAM { /* Used from v5.0 */ DWORD ID; /* unique ID of stream, remains unchanged in drawing */ DWORD VertxCount; /* Number of vertices on stream */ ...
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 ...
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52 C:\Dev-Cpp\Projektyyy\strategy\Tiles.h invalid use of undefined type `struct tile_tree_apple' 46 C:\Dev-Cpp\Projektyyy\strategy\Tiles.h forward declaration of `struct tile_tree_apple' some part of my code: class tile_tree_apple; class tile_tree : public tile { public: tile onDe...
As mentioned above forward declaration only let's you declare pointers or references. In your example you don't technically need forward declaration because you can just declare the AAH class before the main function. Share Copy link Improve this answer ...