c++ - C++11, using vs typedef, templatized -

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instead of

typedef struct {  double x,y; } point;

c++11 supports

using point = struct {double x, y;};

unfortunately, approach not work type t

template <typename t> using point = struct {t x, y;};

is there way of resolving problem?

using point = ...; type alias (formally called 'alias'). i.e., it's different syntax typedef type involved named in ....

template<typename t> using point = ...; alias template, type involved again named in ....

what both aliases , alias templates have in common both must refer type-id (c++11 [basic.scope.pdecl]p3). type-ids must in turn name types. (go figure.)

the problem template<typename t> struct {t x, y;} not type, class template, , established alias templates must refer types. changing code resolve your problem, i've no idea haven't said is... ;-] regarding that, please see what xy problem?


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