c++ - reinterpret_cast vector of class A to vector of class B -


say have 2 classes a , b, , vector of class a below:

class {     int foo;     int bar;     void somemethod(); }; class b {     uint foo;     uint bar;     void someothermethod(); }; std::vector<a>  va;

and want interpret va vector of b, since int , uint re-interpretable.

what best practice re-interpretation? example, if want invoke someothermethod() on va, can ((std::vector<b> *)(&va))->someothermethod(). best practice?

it seems me reinterpret_cast<std::vector<b> >(va).someothermethod() not work.

in addition, working on c++03.

-- update --

sorry misinterpret of own question. yet question lot different one. created question here.

i close question soon: question can seen independent question, , think 1 of answers below enough accepted.

don't. way think can results in undefined behaviour. create new vector , copy on values.


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