Txheej txheem cej luam:
Txhais kom meej "Kev pab kuaj" peb tau tham txog qhov kev xai teev nram qab no:
- Lub hom phiaj ntawm cov kev pab them nqi tshuaj ntsuam.
- Ntau hom kev kuaj kev kawm.
- Ntsuam xyuas kev pab metrics
- Kev pab kuaj chav tsev
- Ntsuam xyuas cov kev pab cuab yeej
- Hom tau tsam thiab disadvantage ntawm kev xeem.
Lub hom phiaj ntawm cov kev pab them nqi tshuaj ntsuam
Kev pab kuaj yog tus kwv yees ntaub hauv kuaj software. Nws yuav qhia paub meej txog qib uas cov ntaub ntawv coding rau ib daim ntawv thov tau raug kuaj.
Nws yog ib yam kev kuaj uas nkawd ncaj thiab ces zoo nkaus li nyob rau hauv lub npe duab kem dawb tshuaj ntsuam. Presently, qhov tseem ceeb ntawm kev tshuaj ntsuam cov kev pab yog nws kim heev nyob rau hauv cov av ntawm software engineering, tam sim no kev nug uas nyob ntawm lub computer lug. Txoj kev pab them nqi tshuaj ntsuam ntawm qhov pib txoj kev sab kev kuaj software npaum no.
Ntau hom kev kuaj kev kawm.
Los xam seb kev faib ua feem kev cai lawm pab them los ntawm ib cov khoom mus kuaj, ib los yog ntau dua cov kev pab tswj ntaub. Cov qauv no yog feem ntau cov yuav tsum muaj ua ib yam kev cai.
Qhov tseem ceeb los txheem
Muaj ntau tus qauv pab them nqi, qhov tseem ceeb yog raws li nram no
- Cov kev pab muaj nuj nqi – No txhua txhua txoj kev thiab tso cai rau lawv yeej paub.
- Tsab ntawv kev pab them nqi – Txhua daim ntawv rau qhov lawv tau ntawv kho mob tseg.
- Mam tuaj – Txhua txhua qhov system configuration faib tau ntawv kho mob tseg.
- Kev mob – Txhua zaj Ius Boolean sub payment ob puas muaj tseeb thiab tsis muaj tseeb.
Cov kev pab Mekas xaus
Nws yog amalgamation cov kev pab muaj nuj nqi thiab tuaj pab thiab tej zaum kuj piav kev xaus. No txheem tau ib txoj hauj lwm cov ntaub ntawv thiab nyob rau hauv daim ntawv thov ncaim tau lawm hu ua yam tsawg kawg ib zaug, thiab txhua tus xyuas nyob rau hauv daim ntawv thov tau ua hauj lwm tam tau txhua yam tsawg kawg ib zaug. No no li xaus kev nug yog ib lo lus Boolean los ntawm cov teeb meem no thiab tsis muaj los ntxiv Boolean operatives. Hauj lwm no tsi muaj lub zoo xws li kev pab tuaj, ho; various ntiav lo lus xaus mam li lwm cov kev pab tuaj lo lus.
Xyuas cov kev pab yuav tsum Attendance ntawd xaus thiab cov teeb meem no pab tau txaus siab. Ho, kev ruaj ntseg kev tseem ceeb heev yog tias customized xyuas cov kev pab muab fulfilled kom nquag. Cov txuj no expands xaus txuj nrog necessities tias txhua lub xeev yuav tsum feem xyuam rau txoj qhov xaus.
Ntau lub xeev cov kev pab
Cov txuj no xav tias cov amalgamation uas ntau zaus nyob rau hauv txhua xaus yog tej.
Constraint tus nqi pab them nqi
Constraint tus nqi kev xav uas nyob rau hauv ib txoj kev soj ntsuam xyuas, rau tag nrho cov cai dav dav rau cov xyuas tau ntsuas. Teg num ntawm yog tias tag nrho cov cai dav tam dav rau ib constraint muaj tej.
Kev pab kuaj chav tsev
Kev kuaj chav tsev qhia peb yog cov khawb hauv qhov chaws tseg li zoj, thiab muaj kev pab them nqi tshuaj ntsuam ceeb peb li cas lefts muaj kev tshuaj ntsuam.
Programmers mas pom tias txoj kev no thiab pom nws cov tswv yim txog tus nqi, thiab cov kev pab tas nrho tsoom toog. Tab sis yog kev pab tas nrho yog ib qho zoo heev tsom, tas ntawm qhov tseeb tsi kho yuav nyiaj tso ncaj los hwm. Ib qhov yus software creation sim kev kho lus los ntawm cov nyiaj uas muaj tsab ntawv lossis hauv paus ntoo muaj kev tshuaj ntsuam. Tau rau tag nrho cov kev pab tsab ntawv los tuaj, loj heev kom raug tej zaum yuav muaj nyob rau hauv cov logic ntawm lub qhov chaws, tsis txhob muaj cov programmers thiab cov thawj tswj nrog ib fake logic kev pab tiv thaiv.
Daim ntawv qhia thiab cov kev pab tuaj yog zoo discovering cuab kev hwm raws txoj cai nyob rau hauv unimplemented qhov chaws, tab sis, feem ntau overlook uas tsis txuas rau Attendance xaus configurations thiab xaus kev sib txuas. Qhov ntxiv rau, kev pab them nqi yog ib tug muaj muaj zog thiab koog sai uas assists discloses imperfection ntxov nyob rau.
Ntsuam xyuas kev pab metrics
Yog rau (6) hom xeem kev pab metrics, uas yog piav rau hauv qab no.
Kab kev
Kab kev kuaj xyuas yog cov kab hauv qhov chaws DVR thaum lub sij hawm ntawm replication. Enclosed yuav ua tus nqi tsim nyog cov kab ntawm qhov chaws pov rau hauv ib cov ntaub ntawv uas muaj cov kab tsim nyog uas tau DVR thaum lub sijhawm tus replication alongside nrog kev faib ua feem nej txoj kev faib ua feem ntawm kab DVR qhov nyiaj. Yog wordy ntawv xaiv rau ib nqe lus hais, enclosed yuav ua rau cov kab kev vim li cas tsis tus DVR thoob plaws hauv lub replication tso tau.
Cov kev pab toggle
Cov tshev mis los toggle rau lub sij hawm ntawm replication muaj cov kab no me ntsis lossis catalog transform ntawm ib RESPONSIBILITIES xoom ntawm ib thiab rov qab tau li xoom. Noj su yog tsum tau kiag li enclosed thaum nws tsis txhob raug kaw tsheb thiab onward yam tsawg kawg yog ib lub sij hawm. Cov metric no tsis signify kom tus neeg siv kawg tias muas ib txuj kev ncau ntau bit vector ib tug cai.
Mam nco
Nco los nug saib ib tug nqi hais txog kev koom nrog los yog multidimensional tau ua hauj lwm nyob rau hauv tus qauv siv collections, nrog cov lus nram qab no:
Nug saib tag nrho khoom ib puas siv tau remembrance tivthaiv receipt ntawm 0 mus 1.
- Nug saib tag nrho khoom ib puas siv tau remembrance tivthaiv receipt ntawm 1 mus 0.
- Nug saib txhua remembrance populations tivthaiv tau sau.
- Cov Checks niaj remembrance populations tivthaiv yuav hauv.
Koom nrog los sis multidimensional collections muaj ob hom extents, cov tseem packed thiab unpacked. Packed kev txhawb yog tug mus rau sab laug ntawm ib daim ntawv sau tias unpacked kev txhawb rau sab xis ntawm ib tsab ntawv sau los xyov yog.
Kev pab them nqi combinational Logic
Hom kev pab nug saib qhov txheeb xyuas tau thaum ib zog kwv mus thoob plaws cov tshooj ntawm tus nqi ua si.
Hom kev pab them nqi logic thaum lawv tseem yog awfully zoo nyob rau hauv kev meej pem amalgamations ntawm uas tsis tus sim thaum lub sijhawm ua si muaj indications, revealing tam ncua hauv kabke.
Qhov kev pab los tshuab finite State
Kev pab them nqi metrics no tsi nug saib yog nws tseem tau mus cuag tau txhua yam ntawm tus mob thiab mus nyob txhua tam chaw thoob plaws hauv lub xeev daim kev cai tswjhwm tshuab.
Finite xeev lub tshuab cov kev pab muaj ob hom kev pab txhawb uas yog enclosed tau ko,
- Kev mob – Nws nug saib cov mob ntawm xeev finite tshuab pab hits thaum lub sijhawm ua si.
- Kev pab them nqi evolution mob – Nws nug saib lub xeev finite tshuab pab evolution cov kev mob tag nrho hauv kev ua si.
Cov kev pab assertion
Hom kev pab metrics nug saib tag nrho cov kev pab tam teeb meem ntawm qhov kev tshaj tawm uas yog incorporated nyob rau hauv tus qauv siv yuav muab ntaus.
Presently, enclosed yog tau ntawm tag nrho cov kabke qhib lus nqe lus Cheebtsam txoj cai foundations. Nyob rau hauv feem ntau qhib kabke lus tshaj tawm Cheebtsam muaj ib los sis ntau tshaj ib pab txog tej teeb meem. Thaum tus neeg siv tag lawm leej exacting tshaj tawm piv txwv rau saib tus nas vim li, enclosed replicates no tshaj tawm tivthaiv, txij nkawm ua raws li cov uas kho teeb meem nyob rau hauv qhov kev tshaj tawm muaj tau tsoo mus ua si thiab cov uas tsis muaj. Tus neeg siv kawg kom muaj kev puas tshuaj ntxiv lub sijhawm ntawm lub hom phiaj no no.
Saib tam sim no, tsuas qhib ib tsab lus tseeb 1.6 thiab tshiab no xwb ces. Khoom siv dhau los ntawm hom lus tau qhib cov ntaub ntawv yuav tsis ua haujlwm thiab yeej tsis tau xav tias yuav raug tswj tseg.
Ntsuam xyuas cov kev pab cuab yeej
Txoj kev pab them nqi cuab yeej
Presently cov pab pawg neeg programmer neeg yog ib yam mob zoo comparatively txog VR cov kev kawm siab kuaj cov kev pab cuab yeej. Peb yeej yuav coj plia ntawm mentsis, tab sis muaj ntau ntau plenty nws txoj sia?, lub majorities no rau lawv, various yog complimentary los yog qhib tau qhov twg los tau.
Yam ua ntej, peb pib caiv li cas no los dealings yog txhua zaus tseg.
Tso txoj kev
Lub executions txoj kev yuav ua dej num rau ob hom tso cais:
- Instrumentation
Hom no yam uas tseem yuav los txog influencing lub qhov chaws los ntawm inserting cov kev cai rau hauv chaw zov me nyuam. Nyob rau hauv cov lus, lub instrumentation txoj kev muaj ob tug instructs: instrumentation chav kawm ntawv thiab qhov chaw instrumentation. Tsis poob nthav, qhov ntau yam zoo yog tias kawm instrumentation cev ntas mam code straightly mus ua assembles .class ntaub ntawv whereas qhov instrumentation generates tus mloog ib tsab ntawm cov chaw muab kev pab uas ces tus assembled rau hauv lub qhov kawg yog, DVR qhov ntaub ntawv .class. Yuav luag txhua xeem cov kev pab cuab yeej tau xaiv ib cov ob instrumentation.
- Nchuav JVM
Ib ntau txoj kev los inserting cov kev cai rau lub byte chaws yog ua hauj lwm ceev ntawd txhaum rau cov kev cai JVM xwb. Kev tshawb nrhiav cov kev pab ntawd yuav tau tseg uas coj siv ntsuas tau mus muab xam faib cov hoob overloaded uas yog raug tawm. Ua zoo saib, ho, muaj tsis yog lawm los xij ntov noj qhov twg?.
Hom tau tsam thiab disadvantage ntawm kev xeem
Hom tau tsam
- Thaum kuaj ntxiv tej yam mob yuav txhim khu raug nws.
- Nws assists hauv discovering ib tsab ntawv teev npe tsis DVR yog ib pawg mob kuaj cov chaw.
- Nws assists influentially tau muab xam ntawm kev xeem tseem ceeb, uas cas thaum kawg tus excellence hauv daim ntawv thov software.
Disadvantage
- Ib qho teeb meem ntawm kev kuaj kev peev xwm yog tias nws laij kho zoo li cas muaj tau sau, tus ntawd yog tus tsis txis dab tsi txog daim ntawv thov uas twb tsis tau sau ntawv mus.
- Yog ib tug qauv twb tsis tau sau los yog ib tug deleted ntawm lub, ces configuration hauv paus kev tsis txis txhua yam txog cov tshuaj observes nws tsuas nyob ib configuration uas tam sim no twb.
Xaus
Employing ntau yam ntawm txoj kev pab them nqi kuaj no yog ib theem rau qhov yog khiav kom deb li deb yeej yuav tsis nkag siab qhov kev ua tau yooj yim. Tab sis yog tsab ntawv thiab tuaj pab metrics cov lus xam thiab ua kom tiav ua ke yuav ncaim cov loj faults unexposed, muab programmers thiab cov ua haujlwm hauv ib txoj kev ntse fake kws muaj txuj ci. Foundation kev pab them nqi rau tus ntxiv noj qab nyob zoo thiab kom txoj kev rau discovering cov overlooked faults tsis aggressively zuj zus tus nqi ntawm cov kev ntsuam xyuas qhov tseem ceeb.
