boost::urls::params_encoded_ref::set

Set a value

Synopsis

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


iterator
set(
    iterator pos,
    pct_string_view value);

This function replaces the value of an element at the specified position.

All iterators that are equal to `pos` or come after are invalidated.

The string passed in must not come from the element being replaced, or else the behavior is undefined.


url u( "?id=42&id=69" );

u.encoded_params().set( u.encoded_params().begin(), "none" );

assert( u.encoded_query() == "id=none&id=69" );

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

Name	Thrown on
`value`	contains an invalid percent-encoding.

An iterator to the element.

Name	Description
pos	An iterator to the element.
value	The value to assign. The empty string still counts as a value. That is, `has_value` for the element is true.