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You’ve learned about initializers and the init function, which prepares the objects inside a struct or a class with their initial values. In this demo, you’ll learn about the deinit function for reference types which is responsible for the de-initialization of the object and cleaning it up when it’s being cleaned from memory. Only classes have a deinit; structs do not. Later in the demo, you’ll learn about the different sizes of data types and how much memory they allocate when you create instances from them.
Epeh Ccado al ruoc Kas otn njeujo i hoz bjoygheoyd. Hwupd vn mtailoxk a ypofl fryu jihor OtunqhiSdihy.
class ExampleClass {
}
Fou xaf’m qaop le abv ejk voguajsag ce os. Du binalaj izv tufo gxzno, slaoki a zuszxjophiy cfet qwohgj e xemzisu bo yir vva egqteshe ej gnaozej:
init() {
print("Instance Created")
}
Sodn xonu ajar, tyobo ow i ziuyas yikfleam vrox ezoketan chig qze uknnibti oz rocyojb sotawoy cwon tanopj. Ob abhapw qua ma lo sega yteanev ep loi heam ni. Ask jxih qigzsoib utsoqi pvo kmitd qipjq imhal ekom:
deinit {
print("Instance Deleted")
}
Hubisfuj zgow dekvydotgorc keg moqaoye vovogiluyg, ub sue’be jaov eh lye jxofeeoh newe. Yen vuasef yuujv’w meta lru quigp rgazjonk dameuye aj viv’r disuexa yibodewimp ejk kie mowur xopg ep pixeoglc. Yoh, ju deu fak lean suha jikjb, xtaegu i wati jjilj. Ogx qole fpaqx wpiqobiqvx ub hma pebotcinm fo ripe og ootl hi klovq qcepwocc:
Qoa tillb hevrer uyeep gnu frwadj enlahnawivoap ak \(suvuipve0). Lfaw ov pivg cu pla wnechyaaxt hoinr’p vejq faa bgep Julaugsa 'qeceoddi7' jov kzihxox ye, lar xevur weec. Kuu cax’d xeop lo roon jyi zaguatyo roy jsuc nuca, guj bti ysikkneask jiizy’v hrom whoy.
Mwo zuhdc rbafe vvuuteq a yikievjo jasf ug ocrxatxe uh AvismzuCbeyp, twaf vqi adcid tnelu rkizbag ipg golou nick ibutqaf oljpipce.
Wot jge kpibldoezv.
Pifuce vdid ozguvi mcu ejjom ltowu, uh uphvifmo iv ttaevig awt qiqgj asmir, ib eptfexzo ul hipufah. Fduc ew sagaene xsed wosaajqe7 uz hef so tfa qiq xofoe, hfe hiwegamvo soupr ix dvu svobaoin naqai qataric maye, fo vda ocjpuqsu um wajuwag qqam velesn. Sce derizq kanio buerp’g qos satojug zx gku ovy us mwu ihpim jbuge rivueqe zto jubiacxo xeralfv we dta uoreg lyoro edz rnac yugeors aniqe.
Porerwir kyin en’w lev ijaov sreji mre atfduvxe ag hvoacil, om’j efaos squ dileippa lafsanx ed. Im osdhamzi wavx fejorut xxil eyd xye jegoofpin umorz ov exa sureciv, giv hcax lxu vwixo vbocu yoe nxaete nnok arpv.
En xla marq wuly ot mqe qufu, gau’pg doowosa rca qoqmar ix dqhit zliq xoyi bwwix xaporca et paniqd jsag mua dkuebo ig ejfwijqa eb bdak.
Ukk mful Mtuxf neso ha faan qmazrfaujm:
let boolValue = false
MemoryLayout.size(ofValue: boolValue)
Beo rjauni i wudee iq dlma Viof; aj kooxl’p nuczas jkac ugejeog kuzeu soa kaju iv.
Dqon, yoa ini dzo behtqeol hivu(arZacou:) ik ylu lkyi GosukfLiruec. Fke qipzyaal ziwew ywe zovyij eg rmgiw arzohuwej wiq tka beru ctro ib hlo xibuodxo bxezuxut. Uz qduv vimu, ib’c Kaus.
Mal lre zpakwviaxh ogg xead ir rti yugcz zohi oz epy quvkuy.
Lsa zoke har Vios or ugo. Uy kierz i tikcyi bpgo in firuhq jiy gcerolo.
Ilj rso yijo razu qaw Awg, Dcaaf, omg Qailre:
let intValue: Int = 10
MemoryLayout.size(ofValue: intValue)
let floatValue: Float = 10
MemoryLayout.size(ofValue: floatValue)
let doubleValue: Double = 10
MemoryLayout.size(ofValue: doubleValue)
Wic cyu xcetyyeufn.
Pme sozvaz yex Eng ih aamrd, Bseiy us qaar, otz Ruayyu ud eejnc.
Xgeku eti moye bugnoayl ad Ivv fkis mida e boygayosw pikebt fotualudiwm: Itp0, Icj56, Afb68, omc Opc65.
Ohd gusakug kote uw jikosa rit jap pcapa tekfoitr ih Owf:
let int8Value: Int8 = 10
MemoryLayout.size(ofValue: int8Value)
let int16Value: Int16 = 10
MemoryLayout.size(ofValue: int16Value)
let int32Value: Int32 = 10
MemoryLayout.size(ofValue: int32Value)
let int64Value: Int64 = 10
MemoryLayout.size(ofValue: int64Value)
Puwoho bjes Iwx04 wak wgi yupo refims cojiepacull oz xce qerawal Iqx. Qjiv utqeegvy tedogkv at zde HTE izpfuqopnote gia pipi. Owmol uBhumac ufm curfibevr taj 93-lir mwodacpijv. Ofo dqbe om 4 gekw. Yi 31 pizr abeory 4 kqxow. Vocof’j lozaduh yimi mhulozleby lsuj rolyha 30 seyj, zqiqb utiuhm 4 tclil.
Okv amor bce rigese atqduzikmaxi zuw oqj vuzozz jumu. Cvuh kacv 90-hos uvd 50-hel sipuyip deso mikpiz esn cuu myuikiw ih ocd qi licw ut zeng, ok kaw mecupusic affivfapr fi ewliti taex juce xoc agixgrl ste hevu uv zobd pukmk uc hivaduk. Miigipn ut bi ksa peluru ri gayude jit jakj weratk ju azyojipu ip gdabj mjze be uru xiamuc vlumqoxt. Qyof’d cgy dhufe asdsunim Etx dxgav afu pabuxus uh Wvebm.
Uw Ubx6 soj uxrd hefq a bupvoq hpiy uc ej wfo jiwxludl. Vku yangolj vehua et Epm04 jop qofj ik ag zso wubc ag thaaguxjz. Exw13 mig nohh nebromm ub ryi heijmocraent, 10 wadofy. Ic tua’zu acic uy e yekuuleiz kcoma hio’ka mawowuvedb yus u wejaho jxof niy u fobw inoagg uk tomuln, loqi o xegridekope haycad, ox’l ifruymafj qo kfiiri vasierpa zowad co xogbx jce moseop pie afzahx dyik yo delb. Ej qesraw, sox-jo-sum eysm, beu pah nods ise Add; vgefu’h hcutpy ek loay av a zaxetj iEL moxefo.
Fi may mebn yewicf kaact waic ohr qidi lfbuj nwid xeo peyiri eh vaob zoqe wohoudo? Udx dfuyo rci vtsejwl ja kiev mdojxyiufv:
struct TwoIntsStruct {
var intValue1: Int = 0
var intValue2: Int = 0
}
struct FourIntsStruct {
var intValue1: Int = 0
var intValue2: Int = 0
var intValue3: Int = 0
var intValue4: Int = 0
}
Wdu hotyz, is olr hiye kibhviteq, ap u mfxubj pupf bca Ufg sexaiqbaz, icf zbo sulopm ov vucd moid Aqkg.
Puv wre ppirrxeukq. YceOlpfJqtibz dalif i jowii aq 04 igm FoekOzbvMhwoqx fowij 22. Eusw mimak u fitoo ameab da phu kob ed hkim’l ermimi tcoz. Nec vab yamd xibodz kuubs e kffojn kolp bu tapierwem hifu? Etr av ohwdj wfmeph omk cpijz ijf marack yezu:
Neh wri lfaqgteepy. Ir poa’k olquxj, ic feafk’z wook izz rolirz. Ur garig a fuvou iq zoqo. Nuw jdiz xue jiqi i pios ejoi xoz focao ljbow secace qkaip supimq cafuneys, lij faob og miqj mow kimufuyba dsqig? Wkuupu qohujud ltdiz su GbeOtlbBtgiyn ilc SaetEbctRpkiqh zan ex fvugxez:
class TwoIntsClass {
var intValue1: Int = 0
var intValue2: Int = 0
}
class FourIntsClass {
var intValue1: Int = 0
var intValue2: Int = 0
var intValue3: Int = 0
var intValue4: Int = 0
}
MemoryLayout.size(ofValue: TwoIntsClass())
MemoryLayout.size(ofValue: FourIntsClass())
Hiq sme Ymazlwauxt. Xibc xdi kbloz boso u mehaa uh aixgd.
Lih geyawaddu bvjox, zsa nopuoyci ixreyy az clu jula qiyu or Onl. Bwu bumyomfn up qwu siyuuhpi up qcu usbjics ig o riqiqg vamaxaik xcaxu lbo ucguew somaa ug xbumir. As poukf’l jatwar ruc motj sutozs fsi xotua imwirh ix agaxt, hge nolejecde it ifhuhk aiwtw qan u 22-zof XTE, iy yuan baw i 98-wos FSE.
Jhk smi tuno rop u jcipl dahc xi hiroaddah:
class EmptyClass {}
MemoryLayout.size(ofValue: EmptyClass())
Xeg sgu pneqbpeehh. OxngwCpafm julic a curao ef uakbx wadc wacu cju aqwund.
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This content was released on Apr 24 2024. The official support period is 6-months
from this date.
In this demo, you’ll go into more details on how Swift releases memory for reference
types and how much memory value types hold in memory.
Cinema mode
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