params_ref::unset

Remove the value on an element.

iterator
unset(
    iterator pos);

This function removes the value of an element at the specified position. After the call returns, has_value for the element will be 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" );

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

Throws nothing.

An iterator to the element.

Name	Description
`pos`	An iterator to the element.