unset

Remove the value on an element

Synopsis

params_encoded_base::iterator
unset(params_encoded_base::iterator pos) noexcept;

Declared in file <include/boost/url/params_encoded_ref.hpp> on line 832

Defined in file <src/params_encoded_ref.cpp> on line 168

Description

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.

Example

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

u.encoded_params().unset( u.encoded_params().begin() );

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

Complexity

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

Exception Safety

Throws nothing.