Video: Dab tsi yog qhov qub txeeg qub teg hais txog nws qhov zoo?
2024 Tus sau: Lynn Donovan | [email protected]. Kawg hloov kho: 2023-12-15 23:47
Lub ntsiab qhov zoo ntawm qub txeeg qub teg yog code reusability thiab readability. Thaum me nyuam kawm ntawv qub txeeg qub teg cov khoom thiab kev ua haujlwm ntawm cov niam txiv hauv chav kawm, peb yuav tsum tsis txhob sau cov lej qub dua hauv cov menyuam kawm ntawv. Qhov no ua rau nws yooj yim dua rov siv cov lej, ua rau peb sau cov lej tsawg dua thiab cov lej nyeem tau ntau dua.
Tsuas yog li ntawd, qhov zoo thiab qhov tsis zoo ntawm qhov qub txeeg qub teg yog dab tsi?
Inheritance Disadvantages Lub ntsiab qhov tsis zoo ntawm kev siv qub txeeg qub teg yog qhov ob chav kawm (chav kawm hauv paus thiab qub txeeg qub teg) tau nruj ua ke. Qhov no txhais tau hais tias ib leeg tsis tuaj yeem siv ywj pheej ntawm ib leeg. Yog tias ib txoj kev raug tshem tawm hauv "super class" lossis tag nrho, ces peb yuav tau rov ua qhov tseem ceeb thaum siv txoj kev ntawd.
Tsis tas li ntawd, dab tsi yog qub txeeg qub teg dab tsi yog nws hom? txawv Hom ntawm Keeb kwm . Keeb kwm yog tus txheej txheem ntawm kev tsim cov chav kawm tshiab, hu ua Derived Class, los ntawm cov chav kawm uas twb muaj lawm, hu ua Base Class. Hierarchical Keeb kwm . Hybrid Keeb kwm . Multipath qub txeeg qub teg.
Tsuas yog li ntawd, dab tsi yog qhov zoo ntawm kev qub txeeg qub teg hauv Java?
Tau txais txiaj ntsig ntawm kev siv qub txeeg qub teg : Ib tus lej tuaj yeem siv rov ua dua. Keeb kwm hauv Java txhim kho cov khoom ntawm cov chav kawm, uas txhais tau hais tias cov cuab yeej ntawm cov chav kawm niam txiv yuav tau txais tau qub txeeg qub teg los ntawm lub hauv paus chav kawm. Nws tuaj yeem txhais cov chav kawm tshwj xeeb ntxiv los ntawm kev ntxiv cov ntsiab lus tshiab.
Dab tsi yog qhov tseem ceeb ntawm kev qub txeeg qub teg?
Ib qho ntawm feem ntau tseem ceeb cov tswv yim hauv object-oriented programming yog cov qub txeeg qub teg . Keeb kwm tso cai rau peb los txhais cov chav kawm nyob rau hauv cov nqe lus ntawm lwm chav kawm, uas ua rau nws yooj yim dua los tsim thiab tuav ib daim ntawv thov. Qhov no tseem muab sijhawm rau rov siv cov lej ua haujlwm thiab siv sijhawm sai.
Pom zoo:
Dab tsi yog qhov sib txawv ntawm qhov qub txeeg qub teg vs classical qub txeeg qub teg?
Yog li ntawd, tus qauv yog ib tug generalization. Qhov sib txawv ntawm cov qub txeeg qub teg thiab cov qub txeeg qub teg yog qhov qub txeeg qub teg qub qub yog txwv rau cov chav kawm qub txeeg qub teg los ntawm lwm cov chav kawm thaum cov khoom qub txeeg qub teg txhawb nqa cloning ntawm txhua yam khoom siv cov khoom sib txuas
Dab tsi yog qhov zoo ntawm qhov qub txeeg qub teg hauv C ++?
Qhov zoo ntawm Inheritance Lub ntsiab kom zoo dua ntawm qhov qub txeeg qub teg yog tias nws pab hauv kev rov siv dua ntawm cov cai. Los ntawm kev ua qub txeeg qub teg ntau lub sijhawm thiab kev siv zog tau txais kev cawmdim. Nws txhim kho cov txheej txheem kev pab cuam uas tuaj yeem nyeem tau. Cov qauv kev pab cuam yog luv thiab luv uas yog ntau txhim khu kev qha. Cov lis dej num yooj yim rau kev debug
Dab tsi yog qhov qub txeeg qub teg hauv C ++ Wikipedia?
Nyob rau hauv object-oriented programming, qub txeeg qub teg yog lub tswv yim ntawm basing ib yam khoom los yog chav kawm rau lwm yam khoom (prototype-raws li qub txeeg qub tes) los yog chav kawm ntawv (chav kawm-raws li qub txeeg qub tes), tuav zoo ib yam li siv. Ib chav kawm qub txeeg qub teg hu ua subclass ntawm nws chav niam txiv lossis chav kawm super
Dab tsi yog qhov sib txawv ntawm qhov sib xyaw ua ke thiab qhov qub txeeg qub teg?
Txawm hais tias ob qho tib si Inheritance thiab Composition muab code reusablelility, qhov sib txawv tseem ceeb ntawm Composition thiab Inheritance nyob rau hauv Java yog tias Composition tso cai rov qab siv code yam tsis tau ncua nws tab sis rau Inheritance koj yuav tsum ncua chav kawm rau ib qho kev rov qab siv code lossis functionality
Dab tsi yog qhov qub txeeg qub teg Dab tsi yog qhov sib txawv ntawm qhov qub txeeg qub teg piav nrog piv txwv?
Inheritance yog ib txoj hauv kev kom tau txais cov yam ntxwv thiab kev coj cwj pwm ntawm ib chav kawm los ntawm lwm chav kawm. Cov chav kawm uas cov tswv cuab tau txais qub txeeg qub teg yog hu ua chav kawm hauv paus, thiab chav kawm uas tau txais cov tswv cuab tam sim no hu ua chav derived. Inheritance siv IS-A kev sib raug zoo