unset

Remove the value on an element


                iterator
unset(
    iterator pos) noexcept;

Declared in file <src/params_ref.cpp> at line 155

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" );

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

Throws nothing.