Ngokwe mininingwane ye-design, izinhlelo zezinto-zamakhasimende kanye nomklamo (bheka into ngamakhasimende Uhlelo izakhiwo ), has-a (has_a noma has a) kuyinto yokwakha ubuhlobo lapho enye into (owayevame ukubizwa ngokuthi into elimiswe, noma ingxenye / abamelwe / ilungu into) " kungokwalabo "(kuyinto ingxenye noma ilungu ) enye into (ngokuthi uhlobo esiyinhlanganisela), futhi siziphathe ngokuvumelana nemithetho kobunikazi. Ngamagama alula, has-ubuhlobo e into ibizwa ngokuthi ensimini ilungu into. Multiple has-a ubudlelwano kuzohlanganisa ukwakha isigaba sabaphathi sebuniyo. Lokhu kumele ziqhathaniswa i luyisivikelo (is_a noma kuyinto) Ubuhlobo esiba yokwehlayo taxonomic ( subtyping ). Isinqumo sokuthi ubudlelwane obunengqondo kakhulu bento nokwenziwe ngaphansi kwayo akuhlali kukhanya ngokusobala bunakho-a noma bu-a . Ukudideka ngenxa yezinqumo ezinjalo kudale ukuthi kudalwe la magama wensimbi. Isibonelo esihle se- has- ubuhlobo yizitsha eziku- C ++ STL .