boost::urls::params_encoded_ref::insert :: Boost Libraries Documentation

# boost::urls::params_encoded_ref::insert

Insert params

## Synopsis

Declared in `<boost/url/params_encoded_ref.hpp>`

    template<class FwdIt>
    iterator
    insert(
        iterator before,
        FwdIt first,
        FwdIt last);

## Description

This function inserts a range of params 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.

## Mandates

    std::is_convertible< std::iterator_traits< FwdIt >::reference_type, param_pct_view >::value == true

## Complexity

Linear in `this‐>url().encoded_query().size()`.

## Exception Safety

Strong guarantee. Calls to allocate may throw. Exceptions thrown on invalid input.

## Exceptions

Name | Thrown on
`system_error` | The range contains an invalid percent‐encoding.

## Return Value

- An iterator to the first element inserted, or `before` if `first == last`.

- An iterator to the first element inserted.

## Parameters

Name | Description
before | An iterator before which the element is inserted. This may be equal to `end()`.
first | The first element to insert.
last | One past the last element to insert.

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