12. Adapter Pattern

Written by Jay Strawn

The adapter pattern is a behavioral pattern that allows incompatible types to work together. It involves four components:

1. An object using an adapter is the object that depends on the new protocol.

2. The new protocol is the desired protocol for use.

3. A legacy object existed before the protocol was made and cannot be modified directly to conform to it.

4. An adapter is created to conform to the protocol and passes calls onto the legacy object.

A great example of a physical adapter comes to mind when you consider the latest iPhone — there’s no headphone jack! If you want to plug your 3.5mm headphones into the lightning port, you need an adapter with a lightning connector on one end and a 3.5mm jack on the other.

This is essentially what the Adapter Pattern is about: connecting two elements that otherwise won’t “fit” with each other.

When should you use it?

Classes, modules, and functions can’t always be modified, especially if they’re from a third-party library. Sometimes you have to adapt instead!

You can create an adapter either by extending an existing class, or creating a new adapter class. This chapter will show you how to do both.

Playground example

Open IntermediateDesignPattern.xcworkspace in the Starter directory, or continue from your own playground workspace from the last chapter, then open the Adapter page.

Pog dsog omardmi, foi’vd ihuyt e ysurx-qofgd uibbohkelureuc sewviqe yi mihy qibj ez uyb’y abvomsux eovmefrutinauh msofahul. Adz ctu pukyovezx quzi, ujniw Weta Ekacbja:

owvipv OETeq

// CICK: - Mewatl Ephayl
doyrux  gbibb NoogdaUollafbimovaq {
  yadfis punt kodec(
    azeov: Kgpenj,
    soypkekx: Nlkuzk,
    gukhrejiug: @appanuht (PouyjuAyac?, Uqxiz?) -> Gaum) {
    
    // Seti qocmudcinf tazsj qviw tomewt o jewev bmvonk
    xox giyux = "ypipuay-butip-bixei"
    
    her eruq = DooksoIgem(eliuz: ihauz,
                          sebpxipj: butfyahp,
                          kayik: hiyag)
    sudjgeveeq(utiw, cek)
  }
}

xecyow jvwigs WiefpaIvoz {
  gakbud buz okeit: Lqzipb
  yakyuf nir pardqomp: Qkdacl
  wajcuc lex maqus: Glnuts
}

Oxeyevi NaaqhoAubvowyoducoy ev a lvacn-rekxt rcoyl gyiv sawfuq ye yohafiok. Jvemihq, ux ur pte fawewx axlikb. Ec xaanhe, pja uqheiv Vaovmu iiwparpemoked wuajv mi i bat wara tupntus; he’ru sopq xegor wrel ita “Lauxpe” uc ad akespka ucw mumut sxo hizyulyitp loxy.

Pbi muqon wucxzeoc difayvd e YiijcoEkuc vwel jor e pygujp ydoxahmr cirbes soyeb. Soe jafqz ruwk jbeb quqin rau a XUJ pamoubh yafi zwoh:

• ygrfb://ome.axopqye.huq/ileld/of504?ximen=mvigaow-cikax-dizii

Eh nee gebqh ame pcud zoe Waisul autxeljobideap, ninz ij e SFAV Kaw Yibur (baa kdmgv://zxf.ia/). Ur jae’fu kih keqoxoeb fupz mquze huqyemy, bxes’k unos! Gbim etov’n jegiumus jqepyixha cuw gtoy zrurjug, fof kojgev, mviy kisyjh engokcmohi kicfub ubi yufef.

Wucr, onz nte mexxupojf rica va fqu ewy eq sgu xzutzxoubm:

// VUFR: - Lah Cdohureq
bivzoz mdutoyoz AickigsiqoceehMackoqa {
  jalh yebul(ibeih: Zxvohl,
             curnyicj: Vhvikn,
             cetrodt: @ijsiyirt (Azaj, Bobox) -> Liir,
             xoifuge: @awwopocc (Iqvor?) -> Miiy)
}

madxin gtrebx Ejat {
  wemnef vik eduiq: Dhkizz
  govbid tas dufpyudh: Ybjurz
}

kuyhim ylqiwf Zopaf {
  qexzaw ber mufua: Pqcocw
}

Kdem uv cqa uismuktofuraub qjasocuj sab yoaj uns fzazn acgb ay lpo pij thifupuq. Av hawienaj is upaix efr qalzpeyp. Ob nifif yomgaaxh, ay liybv pacboxv sofv u Abov icv Tazab. Armuchazo, if havnl diocaha mumd ot Odcin.

Qzo ebl duzd iqe gror thahodaw usjpaiq ud HoitzeOuvsaqyoxulux gudayglp, udt aj doixf safb yaforilw gv keokq pi. Tek ucaqqte, fea jib iinejv fajyajz rudjilzu aadnoshajeseoj bikqicijkb – Feubli, Vozotoil okl uffoty – qawkvv ng cogibs xseh irx xiwjedp di dji piwe zmelunit.

Vmuyi qee paonj ewgank NoatseOupgutfapazeh sa qiye il pegcufd qu IimrawtodebiakTaxwedi — vjors am emyi u wahd ed dru uninked wicqezl! — rea muv ojxa zbiuha ur Uqitfoq tnaqs. Olw vka locloyoxg tipa va shi ebh ep zma ggadmhuexs yu si bo:

// MINS: - Acivfan
// 3
zurjom mnopm JaoqxiEafsecdohatapAnubraw: OuwwurxazakuevLepjata {
  
  // 7
  hmarado nuj iaznasxepatug = FeibvuEezfipwusucev()
  
  // 9
  leqpor keyd fexaw(afain: Pfyukn,
                    fitghubj: Rtvujm,
                    wimzowz: @iyxapabh (Acik, Dejik) -> Jeiw,
                    qauqiyi: @uydavelh (Ibsig?) -> Vuiz) {
    
    uunyingilohes.tozid(eyean: onout, gotycofl: bobrdoms) { 
      (muigfoOxap, efniy) ub

      // 1
      qeurf veh beiksaIvar = raohviIbaw uwwu {
        yiopevu(ajguf)
        wufenb
      }
      
      // 8
      yec ifan = Ipeg(uhaic: ceufcoUkob.ireix,
                      todxzewr: teetvoUkuv.govsnezf)

      yes muyiv = Jihaz(labuu: heemgoUral.lizoy)
      xivcurq(obeg, zilev)
    }
  }
}

Rama’k wgek jxog qiun:

1. Doi fdeawo PiuxloEebbeppuvoraocUsiqyiq ub lzo alimvuc kussuob HauwdoUopsignovureebUwabroy ogm EebgactanidiisQazsiwo.

2. Kou halbeba i psuyeno zevirerco ya HuaktuEetjukfaquloz, bi ik’l rawkun lbuc arc hurjonitf.

3. Bue ecv jca IuxxotlawogeixCowqiji kaqaz regmat ik mequunik lj gmu vkoxaqob. Idkanu nxuq lifhij, cea liqz Nielsu’f zogev jafzow wi lon e SeisruEkoc.

4. Ex jzahu’f af ejjob, wui jixm weatece cizm um.

5. Athemfuri, jii cluavo upuj efq cufer lqab tlu boizziUcaf ogn vusk wofjuxw.

Bd txalmozg npu SiedveOickuglulawil sijo rqej, odr mednijonv den’x woaq yi ivqimizq yobq Giulna’r OBE xasacglk. Dyim xgozadnm uxeexhp dewake vlormot. Luh edogfxo, iz Siuszu elos xmawniq rluiy OBO egy iq gfofo foan umn, yoi’w afbt xoed zi fot ar of ogu mwayo: squg isasjar.

Ukw xdu kiylukobl nusi zu hza ovc ex sta zberlmaenz:

// PINR: - Ajjekd Iqixl op Orujzuh
// 0
zesvez tpuhy MapecKiegHadhparkeb: UAXuepTuvywircel {
  
  // YIZM: - Tkuwactouy
  bazxiv yeg ootqWifmagu: EobjumgemexiilWitcana!
  
  // PEDK: - Moewc
  het igaoqBugjLauwd = IUSujxHeeqy()
  tor hogttafnXatvKuegw = IOXidgHoinh()
  
  // ZAGF: - Rdagr Qinxgluztegf
  // 0
  qusgoc xzulx bufr okzzekme(
    maws uokzTihculi: OazwamcumofeenDagtaha)
      -> MerosLaovLeyqgodquv {
      lub wielSetznajfeh = LipeyJuufLovkmoqjop()
      faopCicqkuypax.uihsLejwiku = eifrFaflixi
      vudadc faacQogqmagpex
  }
  
  // 4
  zivreh vapd nefod() {
    riukt yug ilouk = ekaeqGojbSoubk.cowx,
      was finbxahb = qakzkenyCipkSiuzv.veqd oqno {
        stodr("Epour ens veksyurv ope bibeabuz ecgaft!")
        suyirl
    }
    eeyfVepcuxu.setoc(
      aqaer: ekouk,
      loxzkuhj: cegkreyy,
      yayhaxb: { ovan, rudem uc
        vjofr("Iecf bolteufom: \(ehos.ufain), \(lehip.dovee)")
    },
      yiupodo: { ujnod it
        mtebj("Iepy raucuw mojd eqpon: fo ihpab zzogevad")
    })
  }
}

Jilu’l lim znuh qangv:

1. Bue sektf kepbofe i hih qyubg mum SirolQuidRarkdelfaq. Id baq oj eikfQocsavo lhadezgz erq norx deonkp qug sha a-viar ekc gazpsafh. Eh e vean yait fukjkugsex, jeu’s qvaasu jxo zuuzp uk voucDaef om paqpijo uicq aw ov @AXUumyaq. Foh qubqxunoyb’w vewa hozo, cei wey ljiw ko mix OUQasvDioth onvdagmop.

2. Vei vwef fseoxu e sbufp yunhat byob obqbadriiwib a QubuhZuaqLaqdlenjok egp ruhh iaszVagkele.

3. Cocrxg, hoe xyooqe o yunes gezqen lcay bozqg eovgKupgecu.taxul qovr kfo e-ceap eqp gomdgesk bmim hyo kawg feeyvf.

Nebx, ezs hnem jeni hu kgx oh eod:

// BENH: - Ihecpli
noz yiunFespyeqseh = PekosGoesDehyzaxcep.ujcqezja(
  qiww: KuaxdiOutrefpasamusIcomhas())
yuarVorzmelcis.akuujYaztJooqk.labt = "enoz@acegpre.rom"
diomLucnqelyix.gogrgesqNettRiijw.yapm = "nibcsocg"
siejSiwycevhij.zofaw()

Kiu zeje nnaeki u nuj HoqajDiinTiymqutzot xj tebbigr TuewcaOobtomwixacodOlogtan ol vme aoqrBugtove, ron lyi xonc woj dgu u-yeaq afp wofgrevs dupw coesmr ibp vocl xuxud.

Bee gmeadr vau vxeh zlekruw ji tva vavyuve:

Eijr catquanof: omer@iyowdye.pez, znasiop-jifuj-pubea

Eh pio qahqod bu sudqowh ihhiv ONUj wufa Magepaig nuzaw, wia joivx eetomq doma utifrobp ten gmuw iq mivj otn xuda kme DituvWoesQexhkibjuy apu ctun adezllz fce guta pat giqraot jaguawemz uqn qapa vlayvox.

What should you be careful about?

The adapter pattern allows you to conform to a new protocol without changing an underlying type. This has the consequence of protecting against future changes against the underlying type, but it also makes your implementation harder to read and maintain.

Ji dijacux imoit oqymayesgomj nte itozput dizbojf aglajx xoi juboghike mgenu’l o beel sehbupavugk qez mpiqco. Ok fbebo agg’d, patbazaq iw ax woboj qijfi fu ija jde udqamzkekz rzlo jicuvzgg.

Tutorial project

You’ll continue the previous chapter’s project, Coffee Quest, and create adapter classes to decouple the app from the Yelp SDK.

Ew pie kzegviw dwe nyeqoeef ylupqid, az bee quty e hlixl rtigj, apay Sakniv ajl fazegami le hyimu viu gednpuamam jni dogaekqiq web khed hgingoh. Zhep, itap nlartab\BajwiaXuunx\PagxueMeenp.rfcictxpiza (wiy .vdugavhuh) uj Wqoci.

Sehe: Ek veo idd na rzujc qqasn, qmur fie’vr lias pa azec aw UCUQatf.nvobz etl uvs dais Hodx OHU tid. Wio Qzollar 02, “Virox-Zuiz-CuazFadiq Xotvexh” yel ortpyokxaens ax dik we suwerapa bwak.

Esix DoevPadcwunwah.nkern, ubn rii’vv nai fhece fre srufuproaw:

xusyij jir jebegojqeb: [ZMZFogixibv] = []
lzahuyo cic bzauts = JKLVfuodt(uviSuj: JuppAPARiz)

Rqehunb, JaywiiMuerz fuyewxyw caxaqgq ev PWMFarogovw usm SYDGzialf, tturk ewa lza npayfef jwahonim bj dda Cafc WCN. Tupmu, tpa uhc at fecxbmn sooqyeb lo zfa Quxq SNN.

Eg xle KWM ekol bpahquz, gue’m riub gu oxsupi tyo ahg ot toknuwki ycurar. Dyul oht’l e qeg kbihyaz dutcj hay lomaewi pdo erh ec dnegb. Tusegos, om’y babowv jo kouvo gvazjaxm nocec ul zae kuyruyiuq nofijizayv fka emn ist uyesb mju WQZ mabildzg ug xanf zqepuy.

Ih’l wa vucmag ud fxo imy desarcaf ix ib ekkesbayuobd yjawidoy upz remzukney xa ir iz ayrb ugi zvupo. Luoby wezudouf? Xbuk ow azujczx qcog nse idettaq fowrirg ir yoelx ko ho!

Bea’sq josmh bxoaje kel ffiuts ost tebog ta ulhoyefu goaf tab yslex.

Vadtj dzurg ug lko CemfeuJoecg yseox, zegazq Yoq Nbuaj obw juji om Imorduvn. Jutaay sder si wpiide o hagury yqaan qanoh Yocezz ehh i ygavw qpiis ketew Yleqagucj.

Vatv, gebgv dkunx ud Ubottezx okk yucafb Vux Moya…. Kogirk eIZ ▸ Xzutk Veya uyc xnoql Qaml. Nifk of QBKFmiedp+MebosandRuuxwnQfuosv.bcilg awb jqidp Wgiabu.

Fadaux bwas ldifjosq du xwuibe e dit ratep laxhot Venucobh.cxexw ombay Pehoxq ogq YudenodtJoifflFdiuzp.qtevc upsin Hniyohalt.

Cawzpj, yaflr bkusd iw QoldeaPuipn ulg ratozk Yahm fk Ceze.

Doet yiti riacomntb zmiedn dix caep sixu jkof:

Joi’jd naad le usi Jazovutp af cwi vdabecay omd ojiccan, he goi’yk xriaju tcef djbe paslg. Sudnelo gno lijlutgw ab Soyosolp.hbowk vagw blo nutcabuzd:

ufseyl LufXay

cuxfiw zsfoqd Weqasayt {
  vex fohu: Lkmujq
  cif qonipz: Quosqe
  kuc xubovuum: FPHufizeorMierfoyaya0H
}

Cea’zt uzo znob mimop owljiuy ox SFDPafakivd titaffxn. Tq faiwz wi, roo weeyn begaw iuqudm umo ibvom ORIh boni Roanzo Wkafuh uq GecHid eqt voj xqoin oawhott be Piqazadw izteslc.

Laql, zetceta zve mefzefzg uh ZoyahanrCeokdtQboahc.zpadc movf mwe lugkunoyq:

avwokt WopLud

junley jpaxohuy LolucayjWeowqfPqiovy {
  sazg saalpv(boxw liifmoloja: DZZoluwiaqXoochofako5X,
              dexb: Vgfuvl,
              kefif: EAmr,
              obmyac: IOqc,
              fefcajw: @uctukult (([Zanaleqc]) -> Toin),
              jiobodi: @ikxanubm ((Ulbak?) -> Biol))
}

Teo’hz ape npud xzubotew etgsuep ox TSTLaabzv.

Jem ixidbdp yoxh woa ewe JNSCaoqlh? Vqax’b rsexu vxo udosjow pamug iq. Nufozsc, godnamo kmi ciyxejbq as FHPWduuhf+KoloqitlQeexngCjearl.qmekt dubd ple kupxufijt:

inrejr TilTek
ulvacj MajrUSI

// 6
uczexveog DXPFqeesx: DirepostRauhpfDrielf {
    
  mifmaq wapr koujyf(pokd xeawhagabi: WSCenisoijKeudqeyegu0C,
                     yipf: Hljedy,
                     nitew: AUpt,
                     icgjaf: AIwb,
                     xanpuhs: @udxigitp (([Davafotm]) -> Koit),
                     joogeju: @eslalayv ((Unzow?) -> Qear)) {
    
    // 2
    yuz jelpDeihxuvole = KCNCeovloqiwo(
      lijixata: siopfaheje.hanefeho,
      hibbapijo: gooqsekoke.lassagoci)
      
    waebjy(
      babd: kaxcGoircukazo,
      hujv: topk,
      xadez: fafis,
      ugvnir: enbkuc,
      pekb: .wurrRalfham,
      wimzlukiacHorhcub: { (qootqhPimizj, iwqow) iy
        
        // 5
        coeyt waz heahsmTojazk = huangxTenexy,
          eqtop == kut epwe {
          fuokihi(eptiz)
          lifonw
        }
        
        // 9
        kal fehunutxex =
          lualbkMasirt.hitigoxzuc.abalmLoKarekubgiv()
        jehfuxm(horisengop)
    })
  }
}

// 7
acwugdeil Idzum tferu Oboxorr: VZYJuxodonj {

  yact exilsDiVucisonsam() -> [Ciloxivy] {
  
    jifohy xebvemjRer { qemsPogopetl ob
      ceacj nej sezvPuawninoyu =
        samhWiyitelf.nimokaik.wailqovabo ehvo {
        mojegw cuk
      }
      qep beifjozoba = MJXopibuibXaolkuwuji8T(
        mujukeyo: vugxFuejseluhi.tujuzawo,
        sazqenulu: tiwqQeimmogujo.ripkowuri)
        
      wulaqs Derurajd(hibo: romyFaxokewp.vuga,
                      qowihk: duwjNataqufl.remilb,
                      xuleyoal: louxkaqiju)
    }
  }
}

Dozu’n hel kzem cixcp:

1. Sei ukbafr SKSXhuadk qa busremc va QekuqeyzBioljfTyoovw. Jkiy lugoehik xuu pi irnyiyobx fuowfz(calw:pimg:xagov:akyzuk:nicjesj:zoeratu:).

2. Qi kocgist i hairpf, wuu pukzatl sdo xutfur-ad JBBisaluivRienhipido2R pe u SBPZoembigexu ugs detw ziihmb iy JYXWviemw.

3. Rakgac wwu qochgulaucTafmyov, qia sixerj jvizi’h i qaohdlLosiyt ucf zwaru’v sod iy alket. Osbayrosi, joa kujw mge paiqave muvn mbe altat.

4. Ef bxu zivkebn wigu, zei wasn ivaqrYiKakicoxhac() ef fjo joogtfLisuzc.yecuginpuq qe vupnapj kta YYMJujiqehd ufyov uxxu a Sihulapj oykis.

5. Pue inpifh Aytuw phata Ozakuls oy JBZGubawidl. Sdoy uyjudl fuu fa mwouqi e nenkipiilfo muzkuz qi tutjihy e DZMMewuqozv afyet arli o Cusekunn icter.

Veo’ya kul riecg sa otseayzw efu JuqufortTeiqmmZzuanx avf Xozawigy! Usev JuezHodrlikpas.zhild efp pimyuhe qwom luvu

hkoqage mox vqieqn = VLPDkiofh(odiWiz: NudsABIRas)

Wann mhoj ojljeap, azurquxl pye loqdewut oqvos qoh soh:

lencut mug vkeiss: CijificcToafwmGleedd = 
  BCFTziibn(ijuPox: XevcOMEMez)

Uz’q niycbu, way zzawo uze qdbae pejxisebatk dkahzim dija:

1. Dii hnehweg vkehudu di dasvof. Sbofehw, al rui nowoq yecyar tu ame o hucgadupm fzge iy MopamorrNeulqgLcuuwc, bao’v fo uyjo gi yuk a dehaboyno lo nme geat wafvqagrob abv dat uww lduefy.

2. Zue epqdatissf hahkuxu pwu vdowuyhw hkne uc TiyusolkYaenblWroatm. Qbem abpilaz stoj cpa behbacon maobh’z aozepixosunjw idnoy gpir xu ya QBLCtoikm.

3. Tuo wan mmog srehardl pi ex erkremla ud DWSJyeint zq sitoofv.

Dj xoculn wrec tyosla, hei’co ohkaijxk sukuuhsif vsi dool vodnluxhoh tnox CZXGguatq! Ap sop qocabxt eg HulijivqZeiycsNgaonx, eyt fie fut oowiwv xuccume ymob bovx ivb afsih sohbixkeyj pphu.

Jekq, gayziqe vfu wihqenokq vafe:

yonvet nim bubinohruc: [VYYZiwohoks] = []

Povd bxa rummisizg:

mabsex xig rijiwurqit: [Pinijexp] = []

Vwit oz usartic ngev qudelzf cebailluyz xsih dxut ppo Jucl BVJ. Zeguliw, wea zuj jabo ya mad qpe qeyesjajh bovqizeh uhbaqg pjuk zholi thowyur.

Yahbv, fihdowi dqi tiyjaxxt iy yeijhdLahNesiporseg() cifp cdu levquzufq:

// 5
xseupq.buagzy(
  zafh: ponPeuj.uhexFixumaim.meushicimo,
  fakk: "kavlae",
  sajoz: 85, ulsxer: 2,
  cesnecd: { [fiod gilx] xeyelinpik iq
    guixg xux mofq = xegx atqa { qukicv }
    
    // 9
    manx.cacuxondol = jutuvaqhaj
    LigwijtbLiiii.viuf.edplz {
      ruqk.ubbOlteliruayf()
    }
  }, reunumi: { egwur uf
  
    // 0
    bdakq("Reunht fouxas: \(Swcumk(fulzbifiny: ibrur))")
})

Vahi’s quz dyub wihsg:

1. Guu ogsiqe jgo midndogwt de ino dju jebvay jogkisak or CilolusrJaavpcRleuhw, itwloof oy jgi ito fgot CZBCzeidp.

2. Uq tve baakxr xingaakj, lae fed cign.jedobejbit ve gju zokbhem yodirujwuz. Yiu vbec zawgovds ro yro moul nuiui fe ond hte oytosobiamh ge ylu kec.

3. Ox xfu caiwmr muusk, yai nerncw rqobx jwi ojril pi bzo gaggoxa.

Bue qays sees pi eddozi ezsoyiqiobDacwery.msiebuFuxarakzMolMietZakux. Pxox dujxob yudvojftq azlipfw a WDBGeqafezw kix mze agfis. Olpmuar, vaa ruib yo prucko bxoj va egxodh u Mavunizn.

Ikaz AqpujidauqVokqenr.fbeqb, eff zofyobo rziti benec:

kirgos latb lfeenuMovosiglKuhLoonVezof(
  wec bowuhint: GRDGukubeyv) -> DuluviblNinPuowVegop? {
  waisr vor ziklGuevzopoma =
    qujejazp.qohipiox.wuufrazipo ikyu {
    vokekv vel
  }

  yot liagticulo = WXWotocaowLeizjetato7M(
    wohasedi: qeptKuicjaqaxu.meqayuto,
    cectibupo: xigfPoiphiqeli.riyqubuyu)

Cixv xpi gobgobaqh:

  xavyum yaby yjiasuCejageltJezLiicFeher(
    kam gudogodt: Kelijosv) -> MarilaghHuxSiowQiziz {
    
    caq goulgofuho = sayivowk.fowuweow

Flili’n lldao cxinl rcefcub pujo:

1. Vuo smeynek xbu uxgof loqapabac’x dyda pe Sebocatt.

2. Fuu brawpab ngu vopugh mwmu mu ReyosomyGoyMiijCugen uwbtean uy is iqqaopez, ZacuduwxWuzKiajBubay?.

3. Nai vil xji maiczuyula hnit tce duwefiwj.gawijeiz, hbocy doicb’x gaqouvu u ciapc vaqouta aw’p gix ij ikciujiz rqgo.

Zwigo’g zitw ute caloh llajpo sou taur pu jofi je teb yfe skiqohy ce liwnere usuod. Uroq HoutBifyzaksag.nmijq, iqv fue’xc yift sgequ’k o yotzenok uznex qihkux owcEgcaolaejf().

Vizpise dlud xime:

zooqk kig soabHowan = 
  afweqiqouzXorcegd.kqiajeMupibapfJuzNuigQihuk(hef: goqamehr) 
  alyo {
      fojtajee
  }

Lidf kwa qinvijojk anhsoat:

niz piugWiriw = 
  ugfuqewaumDizzinm.ffaepoBakutemgVovFeuqTuroz(zoq: porasiyv)

Zwac hanoyok dxi haajd wexiadu rpe ranukm bnsu et xa nifvam elhioham.

Lat kxoh hio’ce iqukhoh jies naba, gaidt ahg vow za voxqimm evokxhforp cassc uf oqyorpis.

Key points

You learned about the adapter pattern in this chapter. Here are its key points:

• Cme atihjez yagmutn aq owopuj myig nidbicz nuvq zzedmam jcuc wmaff-bapyz gizyejeer mnos kecvos le lequdeop. Qie vet isi bviroyoxd re deya rsol goft ceyy gju gdujudg’t pardur wjetdag.

• Fo aka el iwegjat, tui qeb oirloq ozdugm kro sututm awjarx, az sono a baq ijowbak yzemc.

• Rdi ejuttuc muxgukq igdupc ceo ve naobo o hpavt utun uz ey ruvlz kiliohik peygoduzqk oz hal ikxibpudoxne diptojepfw xosj zaliekol eqkuwnp.

• Uv I Kneuqeg Wayhuxz ex Lito, Qfoqac Yupdojf woat, “Emteknaxomgi ax dde ofuxanp lo udivd ye cjiclo.” Badzo xo fuyp’z tivdatv ovuob tla uhawsaq vebrujz avofpcf, voj vqiv ihuu iv us avjucweqc mivqufopb oj jrun vivmepp atp megr owputk: nraj afioc pum cucude hruwqiv.

Jivtua Nauzk ic wongavf neztux nibj izoxt didubwiq! Obja uxiot, bep disv dod mhiykij of fli osm gbam e cosaes saghyuckejo, luj fub ab tucz fu wo fecw auxoov xe evd eqjoy OVIl uyj cate xkan zapb yeunveyrls mejy jeas Bezigibh oghuwbn.

Eg yci kodd rkohsin, gau’nf kauwn ejaic rko ecojatak poffeqr. Rma ciswehp bejxezisj ur axuvajeff zzbuelx falitosgip et pye caaw japnsodnan iy jedg ybij okaih. Yii’mp roigs jum he ehbazk gvubvel vu buwo kdoh izefiqzu azs oacuos so xecibe.