2024 Tus sau: Elizabeth Oswald | [email protected]. Kawg hloov kho: 2024-01-13 00:07
Cov ConcurrentModificationException tshwm sim thaum ib yam khoom raug sim hloov ua ke thaum nws tsis tso cai. Qhov kev zam no feem ntau tuaj thaum ib tus ua haujlwm nrog Java Collection cov chav kawm. Piv txwv li - Nws tsis tso cai rau ib txoj xov los hloov pauv Kev Sau thaum qee qhov xov xwm rov ua dua nws.
Kuv yuav ua li cas kho qhov kev hloov kho ib txhij?
Peb tseem tuaj yeem zam qhov Kev Hloov Kho Concurrent Exception hauv ib puag ncig threaded. Peb tuaj yeem siv qhov kev tshem tawm ntawm Iteratorkom tshem tawm cov khoom ntawm cov khoom sau hauv qab. Tab sis qhov no, koj tuaj yeem tshem tawm tib yam khoom thiab tsis muaj lwm yam khoom ntawm daim ntawv.
Koj ua li cas tiv thaiv qhov kev hloov pauv sib npaug ntawm kev zam ntawm daim ntawv qhia?
use ConcurrentHashMap. txuas ntxiv siv HashMap yooj yim, tab sis tsim ib daim ntawv qhia tshiab ntawm txhua qhov kev hloov kho thiab hloov daim duab qhia chaw tom qab qhov xwm txheej (synchronizing qhov hloov pauv lossis siv AtomicReference)
Txoj kev twg ntawm iterator cuam tshuam qhov kev hloov pauv hloov pauv?
Yog tias peb thov ib ntu ntawm txoj hauv kev ntawm ib qho khoom uas ua txhaum nws daim ntawv cog lus, ces qhov khoom cuam tshuam ConcurrentModificationException. Piv txwv li: yog tias thaum iterating tshaj qhov sau, peb ncaj qha sim hloov qhov sau, ces tus muab fail-fast iterator yuav pov qhov ConcurrentModificationException.
Dab tsi yog qhov kev hloov pauv hloov kho tshwj xeeb hauv Java pawg dhau?
Yog tias ib qho xov xwm tawm ib ntu ntawm cov lus thov uas ua txhaum daim ntawv cog lus ntawm ib qho khoom, tus khoom yuav pov qhov kev zam no. Piv txwv li, yog hais tias ib tug xov hloov ib tug sau ncaj qha thaum nws yog iterating tshaj lub sau nrog ib tug tsis-ceev iterator, tus iterator yuav pov qhov kev zam.
Pom zoo:
Thaum kev sib hloov pauv hloov pauv tshwm sim li cas?
Inter-generational mobility tshwm sim thaum kev sib raug zoo hloov ntawm ib tiam mus rau lwm tus. Qhov kev hloov pauv tuaj yeem yog nce lossis nqis. Piv txwv li, leej txiv ua hauj lwm hauv lub hoobkas thaum nws tus tub tau txais kev kawm uas tso cai rau nws los ua kws lij choj lossis kws kho mob.
Qhov kev hloov pauv no puas yuav ua rau muaj kev hloov pauv hloov pauv?
Yog li, yog tias muaj kev hloov pauv, piv txwv li, kev ntxig lossis tshem tawm ntawm nucleotide, tshwm sim, qhov no tuaj yeem ua rau kev hloov pauv ntawm kev nyeem ntawv. Nws hloov tag nrho cov amino acid ib ntus. Cov kev hloov pauv no yog hu ua frameshift mutation (tseem hu ua kev nyeem ntawv hloov pauv, nyeem ntawv hloov pauv, lossis framing yuam kev).
Thaum twg qhov kev hloov pauv hloov pauv tshwm sim?
Nws xav tias yuav pab nrog mRNA paub los ntawm ribosome thaum txhais lus. Kev hloov kho kuj tseem siv qhov chaw ntawm qhov kawg ntawm RNA cov ntawv sau tseg. Txog 3' kawg ntawm RNA saw 30-500 adenines ntxiv rau hauv qhov hu ua poly A tail. qhov hloov pauv hloov pauv hloov pauv nyob qhov twg?
Qhov twg yog qhov kev hloov pauv hloov pauv hloov pauv?
Semiconservative replication piav qhia txog cov txheej txheem ntawm DNA replication nyob rau hauv tag nrho cov paub hlwb. DNA replication tshwm sim ntawm ntau lub hauv paus pib ntawm kev rov ua dua raws DNA qauv strand. Raws li DNA ob chav helix yog unwound by helicase, replication tshwm sim nyias ntawm txhua tus qauv strand nyob rau hauv antiparallel cov lus qhia.
Qhov kev hloov pauv twg yog xav tias yuav cuam tshuam los ntawm kev hloov pauv hloov pauv?
Dependent Variable Qhov sib txawv uas nyob ntawm lwm yam uas ntsuas. Cov kev hloov pauv no yuav tsum tau hloov pauv raws li qhov kev sim ua haujlwm ntawm tus kheej hloov pauv lossis hloov pauv. Nws yog cov nyhuv presumed. Qhov kev tshawb fawb hloov pauv twg yog qhov tshwm sim?
