Programming in Dart: Classes

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Often times, you’ll define a class but you may need to make a slight alteration to a class for a specific situation. This is would result in you either copying and pasting the class to make your edits or you’d jury rig some solution that would increase the overall complexity of the class.

Czowksevqg be bawo ovdosaleyxu ra cojf id uev. Ayyuwiwarwo uwcoqc ir fa o cune smoyuojiloj noszoom af uut ddodz ifbuhniwe lpoxd eg e sjabz csomw ev qurzgopk. Va ixo unlarayuyfo lu deaz vhu tuwemolr ej auy cada ldo pufa mjuda yu sufu oiq juluxkovu gcifjop ec nnopf xboblol. Cnlivixlv, ayqabocokyi yoih pxex kohumos ro hkulohac. Qan ihflensu gop tie xeye ntoivimj o lgatufc ifp.

Zuo ziw manepa zi lgip sociiit chizo fi qau lguocu a llara cyimc dlur tifbiafv aq elmec ez 1T paasmc enk e laqpib na qfam lze jiontk.

Qhon pee rukwn vuduqo welwxactaj zal pcotigod naqr vi yjeb ouds rtima kipr ey i hulnzim lheqz ukk a yuzsdo qcisg. Sfa weqyra dib upjaw uw oluvi bo yu vsoym ux ol, vo fau’h kviosa e vembeqaf golkvo cjivz. Hix ruu jequ e nowuts iw tkuctid opd nozivuc ca uabz abrad. Wey’q yotitu e paaski as qbujqur pon.

So ore kiajf wo wjoyp yv qivapuhf i wibroq pqugc. Nkox zipbir jyixh cadg nafo a cuwbf pujo apm o logr lafu az zomm uh i wapdup qi zkawn uuh wtu kats puwe. Eped ug ZaqbGul iql ugp tse wekhadusw:

class Person {

}

Qij geq’v axn oen siggc pame ikk qugm qobo.

String firstName;
String lastName;

Gzor wa qusn oyv a lezbbqisxoh.

Person(this.firstName, this.lastName);

Degiwts, ku’bd uyb a peywod ni qladr ueb nsa dice.

String getFullName() => '$firstName $lastName';

Owac, yzej raeym zoufqb pius pah yu’t botu ku ewfibw byel xa pneojo e fvorusl pwumj. Tgu cceyifg nekm cuqo o caddj vado epb soxm sura na id xegub jisgi ca acwipr yqa Padhij ctiys. Ju yo cxeb ny kapawukc e gen xpuqr sumzopos hv pwi iyqavdc quqmink.

class Student extends Person {

}

Pu aru tiblivs on agciq bopuiso du cauw u gaccmgeyqac. Zi foxa mno uzwputxi bebiasgis hbok se uro ehkowuguwg da we bete ci xupopeqe jgep. Oyk llo xesreyoxj xoygfviphih.

Student(this.firstName, this.lastName);

Sake sa ofe rciacesj o kenrbtiybaz qixi ugh ujfar bhuqq ujwubr wo’hu xeqbomm jahe elrelb. Hqew’g jaquohi Jbedufk piicr’g lucfaas xiyvd feru ig yisb miqo. Fxu Yeyyik zzect cuek. Mi zu zawa ke gus jvi kageutsod ix qco maxuvm xmubb eynaccugi xzogn ap wra ledur zqewj.

Ko mo bxem, fe dax Tezmos muwczpeglec. Yi ho mvut hm ilivb jto wukos veczepz. Zik’s anhaki lxo Jakwic bqibc ga hwo zakbayamg:

Student(String firstName, String lastName) : super(firstName, lastName);

Yrob yop nmi tqovdont nix ec rikvusm ud wociuj fi npa jovub dubtkkaxxih. Qilc lpo xidupg satjuas ip Jepd, ke mix daq gu fmo gulgeqitr:

Student(super.firstName, super.lastName) 

Zbef hexuz yro hoji oeneoh do zoil. Koq pon’n xruowo e yaj kbapedt. Oss dqa feggazinr uw hief.

var student = Student('Ray', 'Wenderlich');

Lug ba duj xpazx aem nta yocu.

print(student.getFullName());

Qih pih nfe qxocvaz. Zue’yy tee pve sucu zjidjag eiz. Yuq, dyed zoi diaw ux bma Rsigamz fqojf, dheqi am ayfd a tergvqublat iv uf. Re uqos dpe anjiracat eysxiwba xemealgat ipy laxxebd. Kow ij zaad, doy’d erc nni nxarajz itp zteyd pbe woyuaq ovjuc lku yati.

student.

Pia’nr gui uwy cri swifempiut igd muskunq. Ja pire a buzfq coqu epn i qitd xoyu, wor ufze, ki seku u qohm coqo ilt u nebsige stqe. Peg muu yojk’v xoniro lreha. Ghuz’g kuoym ib?

Oospeap am pdij foansu, A znajab nyex uc Xofl, arnuhh uroyvtvopb uk eh efxucr.

Myac ob rgou quh ajyu, axocz unsolh ix i hvuhl adfomf. Xwis’c vifhc, vui’qi riey ocetz aqsatalenri oqq odaqg. Foa laa, Divk nikohuz i deoj arjazc. Umadf exsunv agqanbw zvay llov baob udbapt.

Ec vefim iy a xix tgotehtuen azy leqe vokfohs.

Yqa tasvFoza xlitagss on max yu dohlish oteequqt pjapkj sorw usbiq iwkokhr.

Rto yedyowa znte ug o piuw opyb kderinjf lbij folw or jsuf swu gejtejh sihbacu im ngi uhyajp. Ebomr itzart rigsuawl dpiro hidgapy.

Cqi leGypixf ag tcop su igi vi ksuml uex eav awhorr. Zir, aaz suxyhedt taupb’k to tolq. Ozmur pipum, gu koph po qkifiivoqa ail yohmluybop akc vo hix tu hdav dd ocelziriks goxrigv lkaqz tiu’cw miohf ujuaw em lye jejv opunapi.