Insert elements
Synopsis
Declared in header <boost/url/params_ref.hpp>
Description
This function inserts a range of params before the specified position.
All iterators that are equal to
before or come after are invalidated.
| Note | The strings referenced by the inputs must not come from the underlying url, or else the behavior is undefined. | 
Mandates
std::is_convertible< std::iterator_traits< FwdIt >::reference_type, param_view >::value == trueComplexity
Linear in this->url().encoded_query().size().
Exception Safety
Strong guarantee. Calls to allocate may throw.
Return Value
An iterator to the first
element inserted, or before if
first == last.
Parameters
| Name | Description | 
|---|---|
| before | An iterator before which
the element is inserted. This may
be equal to  | 
| first, | last The range of params to insert. |