params_ref::insert (2 of 3 overloads)

Insert elements.

iterator
insert(
    iterator before,
    std::initializer_list< param_view > init);

This function inserts the params in an initializer-list before the specified position.

All iterators that are equal to before or come after are invalidated.

The strings referenced by the inputs must not come from the underlying url, or else the behavior is undefined.

Linear in this->url().encoded_query().size().

Strong guarantee. Calls to allocate may throw.

An iterator to the first element inserted, or before if init.size() == 0.

Name	Description
`before`	An iterator before which the element will be inserted. This may be equal to `end()`.
`init`	The list of params to insert.