Hoare triple yog dab tsi?

Cov txheej txheem:

Hoare triple yog dab tsi?
Hoare triple yog dab tsi?
Anonim

Hoare logic yog ib txoj hauv kev zoo nrog cov txheej txheem kev cai rau kev txiav txim siab nruj txog qhov tseeb ntawm cov khoos phis tawj. Nws tau npaj rau xyoo 1969 los ntawm tus kws tshawb fawb hauv computer thiab tus kws tshawb fawb Askiv Tony Hoare, thiab tom qab ntawd kho dua los ntawm Hoare thiab lwm tus kws tshawb fawb.

Hoare triples yog dab tsi?

A Hoare triple muaj peb ntu, a precondition P, ib daim ntawv teev cov kev pab cuam los yog series ntawm nqe lus S, thiab postcondition Q. Nws feem ntau yog sau rau hauv daim ntawv. {P} S {Q} Lub ntsiab lus yog "yog tias P yog qhov tseeb ua ntej S raug tua, thiab yog tias qhov kev tua S txiav tawm, ces Q yog qhov tseeb tom qab".

Hoare logic siv rau dab tsi?

Lub hom phiaj ntawm Hoare logic yog muab cov txheej txheem raug cai rau kev xav txog kev ua haujlwm raug. Hoare logic yog raws li lub tswv yim ntawm ib qho kev qhia tshwj xeeb raws li kev cog lus ntawm kev siv lub luag haujlwm thiab nws cov neeg siv khoom. Cov lus qhia tshwj xeeb yog tsim los ntawm qhov ua ntej thiab qhov xwm txheej tom qab.

Hoare yog dab tsi?

Hoare is an English surname derived from Middle English hor(e) meaning grey-los yog dawb-haired. Cov neeg tseem ceeb uas lub xeem muaj xws li: Albert Alfred Hoare, hu ua Bert Hoare (1874–1962), South Australian politician. Des Hoare (yug xyoo 1934), Australian cricketer. … John Gurney Hoare (1810–1875), Askiv cricketer thiab …

Yog Hoare logic ua tiav?

Lo lus teb yog, thiab nws qhia tau tias Hoare logic yog suab. Lub suab tseem ceeb vim hais tiastias Hoare logic tsis tso cai rau peb kom tau txais ib feem ntawm qhov kev lees paub tseeb uas ua tau tsis tuav. Cov pov thawj ntawm soundness yuav tsum tau induction ntawm cov derivations nyob rau hauv ⊢ {P} c {Q} (peb tshem tawm cov pov thawj no).

Pom zoo:

Nthuav cov khoom
Leej twg ua tiav mozart's lacrimosa?
Nyeem ntxiv

Leej twg ua tiav mozart's lacrimosa?

Requiem hauv D Minor, K 626, requiem pawg los ntawm Wolfgang Amadeus Mozart, tshuav tsis tiav thaum nws tuag rau lub Kaum Ob Hlis 5, 1791. Txog rau thaum xyoo pua 20th, txoj haujlwm tau hnov ntau tshaj li nws tau ua tiav los ntawm Mozart's tub kawm Franz Xaver Süssmayr.

Lub caj pas lacrimal yog dab tsi?
Nyeem ntxiv

Lub caj pas lacrimal yog dab tsi?

Cov qog kua muag (cov qog qog nqaij hlav), nyob saum toj ntawm txhua lub pob muag, tsis tu ncua muab cov kua muag kua muag uas tau so thoob plaws koj lub qhov muag txhua zaus koj ntsais koj daim tawv muag. Cov kua dej ntau dhau los ntawm cov kua muag hauv lub qhov ntswg.

Tus kab mob myxoma ua haujlwm li cas?
Nyeem ntxiv

Tus kab mob myxoma ua haujlwm li cas?

qhov chaw ntawm tus kab mob myxoma tuag hauv 12 hnub ntawm kev kis tus kabmob. Cov kev tshawb fawb Pathogenesis paub tseeb tias tus kab mob pib rov ua dua tshiab hauv cov kab mob dermal ntawm qhov chaw inoculation, zoo li cov hlwb dendritic.