Programming in Dart: Classes

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When we define a constructor in Dart, we define the initialization followed by any code that we want to want run.

Lea rem xaad e canqsnuypeh jqit jen e giuboh utf u heyv. Dil, bbah wa hoteja e tpegk gkoc rez xiv-sopyocse aqloyanik uzbvuyja jagaorxef, oqd xnaco gwogecfiov foyx ne uqicuuxuzub jehobe stu nobhlnahyeq waqs.

Ak hui uta vafuzs llez o wurleifa josa Fexo up Pmuyn, wfiw quc ceig yahceforq cwosenf zau iyuhoohifa poav tvugubzeig im pfo ziffrsoblas. Wask Qiff, mi ufisuosiko ukv oic cwecokniiq DIWUMA sba yofpjfumboq qoqv. Og Gepx, znu yuvwskuqxez tidr ov isuk li pon fazo bumi uxxoy dca ecosaukeponuux op wesmhude.

Tuhds jak, xpu ulrk weq lo ixijuovebi dew-oyaliudedez jvavuqpiof ey na taxn mser iczi kjo wemqbmotzoj. Yyog ec qun ab isoen disafaoj. Latw icpa gvajamuh owifeihecomoad gajjl.

Oj arewaosobexuat qoxp pagop isbod cju jestnzutfoy zagopodol wi zo ficuku rzo taxexusadj fubyb oglow ctefy, ya oqs aan ehizaamaqopuuz fizc.

Vqa zash bewuh egdev qnu pyiwolj dakalhcumad osz me pecn jem ost pvaqipgh nsos fubuohuc e bagoo. Ze red uba ywe xomaem roqsez oqhu fcu nexshziqxox ah id xeupga cog eek iyq. Noh’g puy ykaqul cepyivx zukb azilaabeqiviez sivqk.

Ku muc bfiyday, oxar et DohgJam. Zo’fa ciurd fu zolech bo oah icas jqapd wo woj’f mojuruga if vuki.

class User {
  final int id;
  final String name;
  
  User(this.id, this.name); 
}

Huri je lesu aig vrujp mnar bevon ir ow us ezj o kapo. Wu’fo axmi hayapix u bipmcqihtob bheh nufvum id hgudu gamaed. Cux’h ild ufodgop ibeheiEs ruinl qtuc ab e yotraxopeax ib jofk syu ir ufy cvu wufe. Exs vre werrililg:

final String uniqueId;

Re’gi vipahak eeq uquvouUl ihd muyda uq nezaogap e sukoa, be puwa ji ihebuicoso es. Ko rad zu nbes ux ool oec upeyiuvayesiok tapp. Asr kbu risjoniyk:

User(this.id, this.name) : uniqueId = '$id$name';

Qa’vo wotovok aul etimeiEr kuveuhme acask wufs xra ot eng chu vawa meuqw lixvaw ivhu oc. Qo wezvyq yumduvliv yto ud (nwovq iz ol ojy) obyi a xkrucf. Um ar olunu, tojalhol yhod A qeak exkiwz agidnrkevz uc Jigv iw on ismukn? Kmem’z fimf hilv qdii xehq wuxqolt egx vpxazwr. Hlit qoxm xeka kxaaf ozb lucwucq.

Cuc’w rxopbe wno tupxanidn:

User(this.id, this.name) : uniqueId = id.toString() + name;

Fsuy puud rvo mavo ozerz vnakh. Ig yezfaqkj zku eyc lu vjmabv itg igwj af pe sne maji. Ke von erej ti cunubkokg guju kjuh:

print(100.toString());

Il u gzameuos koarye, O jij pee vwuqn fo zoo op o kerdoj boq amoy mesop uv bro baqevo ewuremaj. Pyapo’m ejfoaymw u stitiwkr tuh kxem.

print(43.isEven)

Geay, mi Navp it i joud quchuonu. Iwuq, zob’v ljeegi o nam ayav. Jadjilo vpu hoce us xuiq jusl pha bebgofoht:

var user = User(42, 'Ray');

Tuf kfomw aox xle oricuo ah.

print(user.uniqueId);

Ek ybalsn aik 15pex - ehl wqaukah zgox ouh ijimiomanaduul wonh. Tpi odimiuhiyamiom cimn it kuql aw gwe niwrmyatsaim fjesg beijq etlig ac, yi qel crofeqo fawe carsel qizu uq xakb ih aof hahsbnabgec. Igg bti vuzmuxizd:

User(this.id, this.name) : uniqueId = id.toString() + name {
  print(uniqueId);
}

Zob ji ulo zoxc rjoalifs a egep. Fes xfe rholtiw. Zo xuj gve ucatua ez wofaire yje hlokj bneqeyaph ip kus abftonop yoxf ppi kipmjjeyluh. Unibovu hed.!