[#29E2B49DD943664B6FEA411D3C82946C8F8D0D33]
Assignment
params_encoded_ref& operator=(params_encoded_ref const& other);
The previous contents of this are replaced by the contents of `other.
All iterators are invalidated.
The strings referenced by `other` must not come from the underlying url, or else the behavior is undefined.
this->assign( other.begin(), other.end() );
Linear in `other.buffer().size()`.
Strong guarantee. Calls to allocate may throw.