Check out example codes for "c++ typeid get type name". It will help you in understanding the concepts better.

Code Example 1

const std::type_info& ti1 = typeid(A);
const std::type_info& ti2 = typeid(A);
 
assert(&ti1 == &ti2); // not guaranteed
assert(ti1.hash_code() == ti2.hash_code()); // guaranteed
assert(std::type_index(ti1) == std::type_index(ti2)); // guaranteed

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