cobol

Ngempela, ukwenza izibalo ezibhalisiwe ku-COBOL ngezinye izikhathi kungase kulethe inselele, kodwa le nselele inganqotshwa ngokuqonda kahle kanye nekhono lolimi lohlelo. I-COBOL, isifinyezo se-Common Business-Oriented Language, iwulimi lokuhlela olusezingeni eliphezulu lwezinhlelo zokusebenza zebhizinisi. Ulimi olusetshenziswa kakhulu ezinhlelweni zokuphatha zezinkampani nohulumeni. Manje, ake singene esixazululweni senkinga futhi sihlukanise ikhodi ngendlela yesinyathelo nesinyathelo.

Funda kabanzi

Emhlabeni wekhompyutha ye-mainframe, i-Virtual Storage Access Method (VSAM) imile yakha insika eyisisekelo. Ivumela ukugcinwa, ukufinyelela, nokuphathwa kwedatha ngokunikeza ukusebenza okungaphezu kwezindlela zokugcina ezilandelanayo neziqondile zokufinyelela okuqondile. Ukusebenza ngefayela le-STATUS VSAM kuhilela ukusetshenziswa kwe-Cobol, ulimi oluphambili lwezinhlelo zebhizinisi.

Njengoba isisho sakudala sisho, “Inkinga echazwe kahle iyinkinga exazululwe ingxenye encane.” Kulokhu, inselele ngokuvamile okuhlangatshezwana nayo lapho kusetshenzwa ngefayela le-STATUS VSAM ihlanganisa amaphutha okuphatha nokuphatha idatha ngendlela efanele. Ngenhlanhla, ngokusebenza okunamandla kwe-Cobol nokuqonda ngokucophelela ukuthi i-VSAM isebenza kanjani, le nkinga iba yinkiyankiya.

Ukuqonda VSAM FILES
Ake singene esixazululweni. I-Cobol, njengolimi lwezinga eliphezulu, ivumela ukukhohliswa kwamafayela e-VSAM ngokunikeza isigatshana sefayela STATUS. Lesi sigaba somthetho sisiza ekuphatheni amaphutha ekusebenzeni kwefayela le-I/O. Ifomethi esezingeni yalesi sigaba somthetho ithi `ISIMUMO SEFILE IS IS data-name-1`. Kulokhu, `idatha-igama-1` iyinkambu yezinhlamvu ezimbili lapho uhlamvu lokuqala lubonisa khona isimo esiyinhloko, kanti eyesibili ingeyesizathu esithile (uma sikhona).

KHETHA IFILENAME YABELA 'VSAMFILE'
INHLANGANO IKHOMBILE
INDLELA YOKUFINYELELA IYANGEKHO
ISIMO SEFAYILE SIYI-WS-VSAM-STATUS.

Isigatshana se-Files STATUS esisetshenziswe lapha sithi `WS-VSAM-STATUS`, esibonisa isimo sokusebenza kwefayela ngalinye. Ngokuhlola lesi simo ngemva kokusebenza ngakunye, ukuphatha amaphutha kuba lula.

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I-Cobol Programming kanye namafayela e-VSAM: Incazelo Yekhodi

Okokuqala, isigatshana esithi KHETHA FILENAME sisho ukumenyezelwa kwegama lefayela. YABELWA KU-'VSAMFILE' kubonisa ukuthi uhlelo lwethu lwe-Cobol luzobhekisela kufayela le-VSAM ngaleli gama lefayela elingokomfanekiso. Ngaphezu kwalokho, isigatshana somushwana esithi INHLANGANO INDEXED sicacisa ukuthi ifayela lihlelwe ngefomethi enenkomba. INDLELA YOKUFINYELELA IYANGEQEQESHE ivumela noma yiliphi irekhodi ukuthi lifinyelelwe ngokuqondile kunokuba lilandelelane.

Funda kabanzi

Impela, nansi indatshana oyicelile:

Ubuhle bamawebhusayithi esimanje bulele ekusebenzisaneni kwawo nasekusebenzisekeni kwawo. Ukufika kwe-JavaScript kuphefumulele impilo kumakhasi ewebhu amile, aqinisekisa umuzwa oguqukayo wabasebenzisi. Okunye okuthuthukisiwe okunjalo kubandakanya "ukuskrola okushelelayo", ukuhlanganisa ukugqwayiza nolwazi oluhle lomsebenzisi, ukuheha ukunaka komsebenzisi kanye nokushayela ukuzibandakanya. {

Funda kabanzi

I-Redefines isici esinamandla ngolimi lwe-COBOL esisiza ukusetshenziswa kwememori ngokuhlakanipha. Ivumela umhleli ukuthi asebenzise isikhala sememori esifanayo ukuze agcine idatha ehlukile ngezikhathi ezihlukile. Inqubo yokusebenzisa i-redefines inyusa ukusebenza kahle kwekhodi. Ukuze siqhubeke sihlola ukusebenza, ake singene esixazululweni saso silandelwe incazelo yesinyathelo nesinyathelo sekhodi.

Funda kabanzi

I-COBOL, isifinyezo se-Common Business-Oriented Language, ibilokhu ikhona njalo emkhakheni webhizinisi nezezimali amashumi eminyaka ambalwa. Ukuba khona kwayo isikhathi eside kusho ukubaluleka kwayo emhlabeni wezinhlelo. Naphezu kokuthi yadalwa phakathi nekhulu lamashumi amabili, isadlala indima ebalulekile ezinhlelweni zebhizinisi zesimanje, ikakhulukazi emisebenzini ehlanganisa ukufundwa kwamafayela. Lokhu kusebenza kubalulekile ngoba amafayela ayindlela yokugcina eyinhloko futhi idatha yefayela lokufunda iwumsebenzi ovame ukudingeka ezinhlelweni eziningi zebhizinisi.

Funda kabanzi

I-Python Pygments iwumtapo wezincwadi ohlakaniphile oza nothingo lwamathuba wesitayela. Njengonjiniyela, kufana nokuba nomzila wonke weminikelo yemfashini ezandleni zakho. Nge-Pygments, ungabhala ikhodi yakho ngendlela ephoqayo engathuthukisi ukufunda kuphela kodwa futhi ethuthukisa ulwazi olunzulu ngomsebenzisi. Omunye angase athi, ikulethela izitayela zemfashini zakamuva kanye namathrendi kusukela kuma-catwalks kuya endaweni yakho yokusebenza yezinhlelo. Isikhathi sokufunda ukufaka nokusebenzisa ngokugcwele iPython Pygments.

Funda kabanzi

Izinombolo eziyinhloko ubambe indawo ebalulekile emkhakheni wezibalo kanye nekhompyutha. Empeleni, inombolo eyinhloko iyinombolo engokwemvelo enkulu kuneyodwa futhi ayinazo izihlukanisi ezinhle ngaphandle kweyodwa kanye nayo ngokwayo. Isibonelo, izinombolo zokuqala eziyisithupha zingu-2, 3, 5, 7, 11, kanye no-13.

Funda kabanzi

Njengonjiniyela we-COBOL, ngiyaqonda ukuthi kubaluleke kangakanani ukuhlukanisa izinkinga eziyinkimbinkimbi zibe izingcezu ezilawulekayo. Ngokunjalo, njengongoti wezemfashini, ngiyakuqonda futhi ukubaluleka kokuhlukanisa izitayela eziyinkimbinkimbi futhi ngibheke izitayela eziqondakalayo. Ake sihlole indlela "yokuphrinta" kukhodi ye-COBOL nokuthi ihambisana kanjani nezwe le-catwalk nemfashini.

Funda kabanzi