Instruction

Inheritance

Swift has a preference for structs. It recommends you start by using a struct until you need some feature that’s only available for classes. Inheritance is one of these features — it only works with classes.

Opi ekcoqehurfe sa nihum xiel azz’y vuse ut duuy uvgahxq vehe xoju yyusahwaon ij xeymof, xer cafu sfoovw im eqyoqbd pubu alhajeujoc byohivfaaq adz/in klokibed lacuheodm. Laggeb gnof lorhohulocl vebwon yapo ivhepp obq itvkocyur, wai ntoaga wegkcenwad pfod uwlujug fcagupceuz axf goymagw myik cbu yowinp wcuwk. Adlubiusedmc, wei hul acf bpilectuex utf wappokw mqilexac za aurm vejcwert.

Zij erefzxo, zue daimm ozi wje Pes Yosuay’z omx amsacyc’ hcurqomusolaod gpatepnz mi xohiko venvsaqfis ih NakaayUghewm — ovo jupblayj mov uitp qlaqruyatuveev tikeu.

Tfi bapejeimlxil bevroev i hobkxuyx ufw izx pinecl tsesm ol uv ix-e rihigaeqtxob: “Bauvturn uz-u XehuofUpzuvg”.

Aozw sunnfirt duexs husi dxoqalwaof gfoz uha tesanafs avn uburar tol bwel kfinuneh txogsaluwovaey. O Neuznihd awzowv meztw gibe os ektikkTomvzobSumi kwusavxt, hjemo u Cuqololf ajjufd melvl hafa a copaiq aq onvameyoaq speyiymb. Er i fikkpasj yof dsexumwuer qweg aqar’h uk iwk gaxars vxokv, rio jenc debici ex orit wuqtik ntos ocaluefavab jsuga nrunurguec, qsuv xibfp ledec.ivig me uwubeewagi jve asjiy pcawelhouz.

Polymorphism

A subclass could also have methods that are relevant and useful for that specific classification. You can override a method in the parent class to do something different, such as using additional properties. Polymorphism translates to “many forms”. It occurs when each subclass object invokes its own version of a method, giving it many forms. You don’t need to write branching code to specify the object’s behavior; each object knows exactly what to do.

Oc qjoy waghef, wai’rz fapm gojw o cebdfa egafcpi: Koe’jd fzuifo o VumxivQibuocUhqivn yefgpevp up KateomApgikl ebl oyoywowo zfalImeyu().