boost::urls::params_ref::unset

Remove the value on an element

Synopsis

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


iterator
unset(iterator pos) noexcept;

This function removes the value of an element at the specified position. After the call returns, `has_value` for the element is false.

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


url u( "?first=John&last=Doe" );

u.params().unset( u.params().begin() );

assert( u.encoded_query() == "first&last=Doe" );

An iterator to the element.

Name	Description
pos	An iterator to the element.