input_iterator_tag instaed of forward_iterator_tag because is not DefaultConstructible
input_iterator_tag instaed of forward_iterator_tag because is not DefaultConstructible

Kronuz/Xapiand,Kronuz/Xapiand,Kronuz/Xapiand,Kronuz/Xapiand,Kronuz/Xapiand,Kronuz/Xapiand