I tried using extern for the enum as well but then it gave the following error : Error: use of enum 'Mode_t' without previous declaration How to use C enums in C++ file ? c++ c Share Improve this question Follow edited Apr 19, 2018 at 8:53 asked Apr 19, 2018 at 8:49 Vine...
solver_type neg_one = (enum solver_type) -1, const_zero = (enum solver_type) 0; ^ vision/svm.cpp:9175:44: error: use of enum ‘solver_type’ without previous declaration const enum solver_type neg_one = (enum solver_type) -1, const_zero = (enum solver_type) 0; ^ vision/svm...
}; // as above int main() { // since C++11, use std::underlying_type to determine the underlying type of an enum typedef std::underlying_type< settings::flags> ::type flags_t; auto val = settings::bit1; switch (static_cast< flags_t> (val)) { case settings::bit0: break; ...
Since only { struct (6), enum (4), union (5) } number of keystrokes are used to declare a data type there is almost no use for the aliasing of the struct. Is that data type a union or a struct? Using the straightforward non-typdefed declaration lets you know right away what type...
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}; // as above int main() { // since C++11, use std::underlying_type to determine the underlying type of an enum typedef std::underlying_type< settings::flags> ::type flags_t; auto val = settings::bit1; switch (static_cast< flags_t> (val)) { case settings::bit0: break; ...
}; // as above int main() { // since C++11, use std::underlying_type to determine the underlying type of an enum typedef std::underlying_type< settings::flags> ::type flags_t; auto val = settings::bit1; switch (static_cast< flags_t> (val)) { case settings::bit0: break; ...
enum class my_type : size_t {}; Then, change your definition of placement new and delete to use this type as the second argument instead of size_t. You'll also need to update the calls to placement new to pass the new type (for example, by using static_cast<my_type> to convert...
enum class my_type : size_t {}; Then, change your definition of placement new and delete to use this type as the second argument instead of size_t. You'll also need to update the calls to placement new to pass the new type (for example, by using static_cast<my_type> to convert...
Identifier reuse: typedef vs enum constant. Identifier reuse: typedef vs procedure. Inconsistent use of tag. Identifier reuse: struct/union tag repeated. Identifier reuse: struct vs union. Identifier reuse: struct/union tag vs enum tag. Identifier reuse: tag vs procedure. Identifier reuse: tag ...