Isihloko esimayelana nolimi lwe-PC singabukeka kanje:
Ulimi lwamakhompyutha lwakha umgogodla wesimanje, umhlaba wedijithali. Ukuze sithuthukise ukuqonda kwalolu limi, ake singene sijule emhlabeni wezinhlelo, sigxile kakhulu ku-C#, ulimi olugxile entweni olwakhiwe yi-Microsoft endaweni ye-.NET.
Ukukhombisa ubunkimbinkimbi balokhu, ake sithathe isibonelo sokukhiqiza izinombolo ezingahleliwe ku-C#.
Ehlelweni, izinombolo ezingahleliwe zisetshenziselwa izinjongo ezihlukahlukene, kusukela ekuhlolweni kwengcindezi kuya emidlalweni namaphrojekthi esayensi. Ku-C#, ikilasi elingahleliwe lihlinzeka ngokusebenza kokukhiqiza izinombolo ezingahleliwe. Ukuthatha amazwibela ekhodi alandelayo njengesibonelo:
I-Randomrand = Okungahleliwe okusha();
int randomNumber = irandi.Okulandelayo();
Ikhodi engenhla izokhiqiza inombolo engahleliwe engaba noma yikuphi ukusuka ku-0 kuye ku-Int32.MaxValue.
Ikilasi elingahleliwe ku-C# lihlala endaweni yamagama Yesistimu futhi liqukethe izindlela eziningi ezingasetshenziswa ngezinjongo ezihlukene. Ukukhiqiza izinombolo ezingahleliwe, izindlela ezisetshenziswa kakhulu yi-Next() kanye ne-Next(Int32, Int32).
Okulandelayo(Int32, Int32) ikhiqiza inombolo engahleliwe phakathi kwezinombolo ezimbili ezishiwo, kuyilapho Olandelayo() imane ikhiqize inombolo engahleliwe phakathi kukaziro kanye ne-Int32.MaxValue.
Ukwakha isibonelo sekilasi elingahleliwe, vele usebenzise umugqa wekhodi olandelayo:
I-Randomrand = Okungahleliwe okusha();
Bese, ukwenza inombolo engahleliwe:
int randomNumber = irandi.Okulandelayo(); // ikhiqiza inombolo engahleliwe phakathi kuka-0 kanye ne-Int32.MaxValue
Ama-Vector ayithuluzi elinamandla ezinhlelweni, eziwusizo ikakhulukazi ekuthuthukisweni komdlalo. Angamela izinkomba, ama-velocities, futhi ngokusobala, izikhundla esikhaleni se-3D. Lapho sisebenza nalawa ma-vector, kwesinye isikhathi sidinga ukubala i-engeli phakathi kwama-vector amabili. Lapha lapho indlela ye-Vector3.SignedAngle of Unity iqala khona ukusebenza.
I-Unity's Vector3.SignedAngle indlela ibala i-engeli ngamadigri phakathi kwama-vector amabili ngokuphathelene nesiqondiso. Inani layo lisukela ku- -180 kuya ku-180, ngaleyo ndlela lisinikeza isiqondiso futhi. Ngeshwa, abanye abasebenzisi babike izinkinga lapho ingabonisi i-engeli esayiniwe ngendlela efanele. Ake singene esixazululweni esisebenzayo sale nkinga evamile.
I-C# iwulimi olunezici eziningi ezinezici eziningi ezenza imisebenzi yokuhlela ingabi namandla. Esinye salezo sici ikhono lokuqhathanisa izintambo kuyilapho unganaki i-casing yazo usebenzisa i-StringComparison enumeration. Umsebenzi `weyunithi yezinhlamvu.Equals` usetshenziswa ukufeza lokhu.
Ukuqhathanisa izintambo kubalulekile ezimeni eziningi zohlelo. Nokho, ngokuvamile, asinandaba nendaba yombhalo esiwuqhathanisayo. I-C# yenza le nqubo ibe lula isebenzisa ukusebenza okusenhliziyweni yemisebenzi eminingi.
Impela, ngizosiza ngalokho. Ngezansi kukhona okusalungiswa kwami okuningiliziwe kwesihloko esithi 'susa izikhathi ezimbili ku-C#'.
Izilimi zokuhlela zibe yithuluzi elibalulekile lokubumba umhlaba wethu wezobuchwepheshe. Ulimi olulodwa olube nomthelela omkhulu yi-C#. Yaziwa ngokuhlukahluka kwayo kanye nemvelo esebenziseka kalula, inikeza indlela eqondile yezinselele ezimbalwa zokubhala amakhodi. Inkinga eyodwa evamile exazululiwe kusetshenziswa i-C # ukususa izikhathi ezimbili. Isifinyezo esingemuva kwakho ukunquma umehluko phakathi kwamaphoyinti esikhathi amabili, isilinganiso esibonakala siwusizo ekuhlelweni komcimbi, izilinganiso zesikhathi sokusebenza, nerekhodi lezibalo.
I-DateTime startTime = i-DateTime entsha(2022, 1, 1, 8, 0, 0);
I-DateTime endTime = i-DateTime entsha(2022, 1, 1, 10, 30, 0);
Umehluko we-TimeSpan = endTime.Subtract(startTime);
Ikhodi engenhla imele indlela elula yokubala umehluko phakathi kwezikhathi ezimbili.
Isusa amafayela ohlwini lwemibhalo kuwumsebenzi ojwayelekile ezinhlelweni ezihlobene nesistimu. Le misebenzi idinga ukuphathwa ngokucophelela, njengoba ukusetshenziswa kabi kungaholela ekulahlekeni kwedatha unomphela. Ngolimi lokuhlela lwe-C#, i-System.IO namespace inikeza izindlela zokwenza imisebenzi enjalo.
Ukuthola inani eliphezulu ohlotsheni lokubala kuwumsebenzi ovamile ohlanganyelwa onjiniyela. Lokhu kuyadingeka ezimeni lapho udinga ukuqinisekisa okokufaka komsebenzisi noma uphathe izinsiza ezithile ngokusekelwe kunani le-enum. I-C# inikeza indlela eqondile yokufeza lokhu usebenzisa isigaba se-Enum kanye ne-LINQ encane.
Ake sihlole isisombululo esenza ukubuyisa inani eliphezulu lokubala kube lula njengophaya.
I-MyEnum yomphakathi
{
Inketho1 = 1,
Inketho2 = 2,
Inketho3 = 3
}
...
I-int yomphakathi GetMaxEnumValue()
{
buyisela i-Enum.GetValues(typeof(MyEnum)).Cast
}
Lolu cezu olufushane lwekhodi lwenza wonke umsebenzi wokubuyisa inani eliphakeme kakhulu ku-enum. Kodwa isebenza kanjani?
I-`Enum.GetValues(typeof(MyEnum))` iyisiqephu sokuqala esibalulekile okufanele siqondwe. Le ndlela eyakhelwe ngaphakathi .NET ibuyisela I-Array equkethe amanani ama-constants ekubalweni okucacisiwe. Uhlobo lokubala ludluliswa njengepharamitha endleleni kusetshenziswa igama elingukhiye elithi `typeof`.
Uma sesinamalungu afanayo, sidinga ukuwaphonsa kuma-integer. Lokhu kwenziwa kusetshenziswa i-.Cast
Ngemva kokuphonsa amanani kuma-integers, ukuthola inani eliphezulu kulula njengokubiza indlela ethi .Max(), elinye ithuluzi elikhulu elinikezwe i-LINQ. Le ndlela ibuyisela inani eliphezulu eqoqweni lamanani e-int.
Isigaba se-Enum siyingxenye Yendawo yamagama Yesistimu ku-.NET futhi inikeza izindlela ezimbalwa ezimile zokusebenza ngokubala. Yilabhulali yokuya lapho udinga ukwenza noma yimuphi umsebenzi ohlobene nezinhlobo ze-enum.
Ngakolunye uhlangothi, i-LINQ, ingxenye ye-System.Linq namespace, ingenye yezici ezinamandla kakhulu ze-C#. Ihlinzeka ngezindlela ezihlukahlukene zokuphatha amaqoqo ngempumelelo, njengokuthola amanani aphezulu, amancane, noma amaphakathi, ukuhlunga, nokuhlunga idatha.
Izibalo zingaba yisifundo esiyinselele, kodwa ngendlela efanele, kungaba yinto ejabulisayo nezuzisayo. Nawa amanye amathiphu angakusiza ukuthi uqalise:
-Qala ngokufunda okuyisisekelo. Zijwayeze nemiqondo eyisisekelo yezibalo ukuze ube nesisekelo esiqinile ongakha kuso.
- Sebenzisa izinsiza eziku-inthanethi. Kunezinsiza eziningi zamahhala ezitholakala ku-inthanethi ezingakusiza uthuthukise amakhono akho ezibalo. Bheka amawebhusayithi afana neKhan Academy noma Iforamu Yezibalo ukuze uthole usizo olwengeziwe.
- Prakthiza, zijwayeze, zijwayeze! Uma uzijwayeza kakhulu, uzoba ngcono kakhulu ezibalweni. Dlula ezinkingeni eziyinselele futhi uzame ukuzixazulula ngokushesha ngangokunokwenzeka. Lokhu kuzokusiza ukuthuthukisa isivinini nokunemba ezibalweni zakho.
-Hlala uhlelekile. Gcina umkhondo wenqubekelaphambili yakho ngokugcina ijenali yezibalo noma usebenzisa uhlelo lokusebenza lokulandelela njenge-Google AmaSpredishithi noma i-Excel. Lokhu kuzokusiza ukuthi uhlale unolwazi ngenqubekelaphambili yakho futhi ulandelele noma yikuphi ukuthuthukiswa okwenzayo ngokuhamba kwesikhathi.
Inqubo yokuphindaphinda izakhiwo zento ku-C# iwumsebenzi ovamile futhi odingekayo, isenza sikwazi ukuphatha idatha eguquguqukayo njengokufakwayo komsebenzisi, amarekhodi esizindalwazi, nokunye okwengeziwe. Ukuphindaphinda ngalezi kusho ukudlula endaweni ngayinye yento ngayinye ngayinye, ukwenza umsebenzi othile noma ukusebenza.
Ku-C#, ulimi olwakhelwe eduze komqondo 'wohlelo olugxile entweni', sinezindlela ezimbalwa zokufeza lokhu, ngokuhambisana namalabhulali abalulekile afana ne-Reflection. Ilabhulali ye-Reflection isivumela ukuthi sihlole imethadatha yezinhlobo futhi silawule izinto ngendlela eguquguqukayo.