c++ - Initialize union with array? -


i new c++. want create data structure network communication (tcp), can build byte array small tagged pieces (like in serialized class). , of course need reverse behavior of this. need tagged pieces byte array, that's why put constructor union.

typedef union message {   struct {     int header;     int payload;   } pieces;   int whole[2];    message (int* arr) {     (int = 0; < 2; i++) {       whole[i] = arr[i];     }   }   message ():ival(){} } message ;  main() {   int a[2] = {10, 2};   message msg(a); }

this snippet working. i'm curious: there better solution initialize union array?


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