param

Constructor


                template<
    class OptionalString>
void
param(
    string_view key,
    const OptionalString& value);

Declared in file <boost/url/param.hpp> at line 278

This constructs a parameter with a key and value.

No validation is performed on the strings. Ownership of the key and value is acquired by making copies.


param qp( "key", "value" );


param qp( "key", optional("value") );


param qp( "key", boost::none );


param qp( "key", nullptr );


param qp( "key", no_value );


this->key == key && this->value == value && this->has_value == true

Linear in `key.size() + value.size()`.

Calls to allocate may throw.