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mystran wrote: eigentone wrote: Quote: the difference between a c++ struct and a c++ class is that (edit: actually what is the difference?).
default access (class default=private, struct default=public). that's all. One gotcha to be aware of though: if you forward declare something as a class, it must be a class and not a struct. Likewise if you forward declare something as a struct, it must be a struct and not a class. So in some sense they are still "distinct" even if their implementation is the same and you can freely mix them in inheritance chains. while some compilers permit it, and may issue a warning (when visible in the TU). |
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| ^ | Joined: 03 Apr 2007 Member: #146135 | ||
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eigentone wrote: mystran wrote: eigentone wrote: Quote: the difference between a c++ struct and a c++ class is that (edit: actually what is the difference?).
default access (class default=private, struct default=public). that's all. One gotcha to be aware of though: if you forward declare something as a class, it must be a class and not a struct. Likewise if you forward declare something as a struct, it must be a struct and not a class. So in some sense they are still "distinct" even if their implementation is the same and you can freely mix them in inheritance chains. while some compilers permit it, and may issue a warning (when visible in the TU). Yeah, but other compilers fail hard, so you shouldn't really ever do it anyway. |
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| ^ | Joined: 11 Feb 2006 Member: #97939 Location: Helsinki, Finland | ||
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mystran wrote: eigentone wrote: mystran wrote: eigentone wrote: Quote: the difference between a c++ struct and a c++ class is that (edit: actually what is the difference?).
default access (class default=private, struct default=public). that's all. One gotcha to be aware of though: if you forward declare something as a class, it must be a class and not a struct. Likewise if you forward declare something as a struct, it must be a struct and not a class. So in some sense they are still "distinct" even if their implementation is the same and you can freely mix them in inheritance chains. while some compilers permit it, and may issue a warning (when visible in the TU). Yeah, but other compilers fail hard, so you shouldn't really ever do it anyway. agreed. i just use class everywhere, and this problem sprouts up rarely (e.g. when interfacing with different 3rd party distributions). |
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| ^ | Joined: 03 Apr 2007 Member: #146135 |
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