[#3DECAB6F82EE647D05E53A09766CCF207E0219C2]
Assignment
params_encoded_ref& operator=(std::initializer_listinit);
After assignment, the previous contents of the query parameters are replaced by the contents of the initializer-list.
All iterators are invalidated.
None of character buffers referenced by `init` may overlap the character buffer of the underlying url, or else the behavior is undefined.
this->assign( init.begin(), init.end() );
Linear in `init.size()`.
Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.