Chaws indentation
Txheej txheem cej luam: Indentation yog ib lub chaw tseem ceeb hauv tej programming sau. Tab sis qhov no feem ntau yog ib sab neglected feem ntau thaum lub programming thiab cov developers yog feem coob tsis kam ua raws li nws. Ntawm kuv kev ib co ntawm cov tshaj txoj tej yaam num yog ua tshwm vim TSUAS muaj cai indentation thiab lawm cov programming siv. Peb yuav tsum to taub tias programming no tsis yog yuav kom daws tau qhov teeb meem xwb tab sis nws tseem yog ib daim duab ntawm coding. Thiab qhov tseem ceeb tshaj qhov ntawd yog, ua tus tsim tawm koj yuav tsum tau passionate txog coding thiab ces tsuas koj muaj peev xwm muaj xws li kos duab rau ntawm coding nyob rau hauv koj cov dej num kev loj hlob.
Taw qhia:
Programming style thiab indentation yuav tau sau tseg raws li qhov uas koj ua raws li miv thiab teev koj qhov chaws. Indentation chaws yog ib feem ntawm cov style thiab yog ob aesthetic paj. Yog hais tias peb ua raws li qhia kom zoo style thiab indentation ces txoj kev pab yuav zoo li ib lub paj huam. Thiab tus nyeem ntawv yuav tau txaus txaus rau SAIL siab thiab to taub lub ntsiab lus. Raws li peb paub ib qhov chaws kom zoo indentation yuav ua
- Yooj yim rau kev nyeem ntawv
- Yooj yim to taub
- Kom hloov tau txoj kev yooj yim
- Yooj yim rau kev tswj
- Yooj yim lug txhim khu
Hauj lwm lawm:
Lub hom phiaj ntawm txoj kev indentation thiab style no yuav ua rau qhov kev pab cuam ntxiv tshwmsim thiab to taub. Nws tej yam ntau lub sij hawm thaum peb revisit txoj cai thiab siv txoj kev no. Ib daim ntawv qhia style muab ib txoj kev peb taug uas tus tsim tawm yuav tsum tau ua raws nraim li thiab siv nyob rau hauv coding. Li ntawd nyob rau hauv ib pawg developers, tag nrho cov cai generated yuav zoo ib yam xwm thiab reusable los lwm coder/tsim tawm ntawm. Qhov phem qhov coding yog tsis ua raws li cov style thiab indentation qhia thaum peb tes num mid txoj kev ntawm txoj kev loj hlob. Tej lub sijhawm nws tshwm sim thaum lub sij hawm siab thiab ntau lwm yam. Tab sis peb yuav tsum nco ntsoov tias zoo chaws lawm yeej yuav zoo txawm tias peb tau muab ib co sij hawm ntxiv vim tias qhov ua mus ywg nws yuav cawm tau ntau. Tab sis hmoov tsis, Nws yog feem ntau tsis nco qab lawm thiab cov teeb meem los ntawm ib theem tom ntej. Thiab nyob rau ntawd tsis nyob ntev heev nyuab nyuab heev rectify thiab rov qab.
Raws li peb paub, ib qho kev pab yog muab sau tseg ib zaug xwb lub coding, tiam sis nws yog nyeem muaj ntau zaus tom ib theem tom ntej. Nram qab no yog ib co ntsiab lus yav thaum peb hu tus tus dua.
- Thaum nyeem ntawv to taub qhov kev pab cuam
- Lub chaws debugging
- Thaum muab chaws tshiab rau cov kev pab uas twb muaj lawm
- Thaum muab kho dua rau cov kev pab uas twb muaj lawm
Tam sim no nyob rau hauv cov seem tom ntej no peb yuav tham txawv khej ntawm formatting. Formatting yuav tau Benefit categorized nyob rau khej no
Indentation:
Lub indentation los txog ua ntej hauv formatting seem. Cov thawj tseem ceeb tshaj plaws yog indentation yuav ua li cas rau tej qhov chaw tsis TABS. Raws li peb paub tag nrho cov kev pab ua hauj lwm zoo rau tej qhov chaw thiab feem ntau qhov tseem ceeb yog tau TSUAV yog cov chaw ruaj ntev txhua hom cev. Tab sis, TAB yog tsis muaj chaw ruaj ntev. Thiaj li yog koj TAB yog teem caij 6 ces tej zaum yuav txawv ntawm lwm lub zog. Thiaj li tej tug nyuaj TAB sijhawm li 8 ces koj cov cai yuav zoo txawv thiab ntxhov. Ces thaum programming peb yuav tsis ntse TAB nrog tej lub, theej peb tsuas yuav tsum siv tej lub.
Ntu chaws hauv qab no qhia txog ib txoj uas muab los ntawm tej qhov chaw indentation. Rau txoj kev zawm hniav yuav tsum nyob rau ib sab. Nws txhais tau hais tias qhov pib thiab ze brace yuav tsum muaj cov chaw qhia kiag ib yam.
Qhia 1: Cov qauv hauv qab no qhia indentation rau lub txawv constructs
[chaws]
pej Indentation()
{
// Thaum lub voj
Thaum (n > 0)
{
System.out.println();
n ;
}
// Yog hais tias- Yog hais tias tus – lwm cai nqe lus
Yog hais tias (Cond1 == val1)
{
System.out.println(“Cond1 no val1”);
}
Yog hais tias tus (Cond1 == val2)
{
System.out.println(“Cond2 no val2”);
}
ntxiv
{
System.out.println(“Tsis muaj tus mob no tas siab”);
}
// Mus dlaim
hloov (Val1)
{
rooj plaub no 1:
System.out.println(“Qhov no nws yog Java”);
so;
rooj plaub no 2:
System.out.println(“Qhov no nws yog C ”);
so;
rooj plaub no 3:
System.out.println(“Qhov no nws yog Oracle”);
so;
vim:
System.out.println(“Qhov no yuav ua tau dab tsi”);
so;
}
}
[/chaws]
Raws li pom nyob rau hauv qhov piv txwv li saum toj no txhua tus constructs raug kaw uas muaj kev zawm hniav kom zoo, Txawm hais tias lawv tsuas muaj ib zaug xwb kab kev cai. Vim li ntawd nws yog ib tug zoo xyaum ua raws li qub tas li yuav ua rau qhov chaws ntau tshwmsim thiab maintainable. tsis tas li ntawd, rau yav tom ntej ntxiv los yog li qho no thiaj li coding no yuav pab tau heev. Cov cai no yog ntaus cim kom zoo thiab yoojyim li no rau qhov chaws tshiab ntxiv rau qhov constructs uas twb muaj lawm. Nram qab no yog ib co piv txwv uas qhia seb yuav siv kev zawm hniav rau ntau hom kev constructs.
Qhia 2: Chaws coj mus kuaj hauv qab no qhia tau hais tias txoj kev zoo
[chaws]
//Qhov no yuav tsis siv txawm yog ib cov kab puas muaj – TSIS MUAJ
Yog hais tias (cond1 == tseeb) System.out.println(“Qhov tseeb”);
// Qhov no kuj tsis muaj xyaum zoo – TSIS MUAJ
Yog hais tias (cond1 == tseeb)
System.out.println(“Qhov tseeb”);
// Cov lus qhib brace shoud tsis muaj nyob rau ntawm ib yam kab – TSIS MUAJ
Yog hais tias (cond1 == tseeb){
System.out.println(“Qhov tseeb”);
}
// Qhov no yog ib qho uas yuav siv kev zawm hniav zoo meej – YOG
Yog hais tias (cond1 == tseeb)
{
System.out.println(“Qhov tseeb”);
}
[/chaws]
Yov: Yov tas tus thib ob feem tseem ceeb nyob rau hauv txoj kev indentation thiab formatting. Kuj zoo qhov chaws tshwmsim ntau yog zoo zoo xwb ces. Li ntawd, peb yuav tsum ua raws nraim li yov muab los ntawm seb peb coding thiab nws yuav tsum tau zoo ib yam.
Nram qab no yog ib co piv txwv uas qhia cov kev pab ntawm yov hauv qhov chaws indentation.
Qhia 3: Chaws coj mus kuaj hauv qab no qhia tau hais tias tus yov qha
Parenthesis lawm yuav tsum pib tom qab lub hom npe.
[chaws]
// TSIS pom zoo
ntsuam xyuas (Kuv, j);
// Pom zoo
ntsuam xyuas(Kuv, j);
[/chaws]
Tag nrho cov npe array tam sim ntawd tom qab raws cov square bracket lawm.
[chaws]
// TSIS pom zoo
arr [0];
// Pom zoo
arr[0];
[/chaws]
Txhua binary tswv yuav tsum muaj ib qhov chaw rau tog ntawm tus neeg teb xov tooj.
[chaws]
// TSIS pom zoo
ib = b-c;
ib = b-c;
ib = b – c;
// Pom zoo
ib = b – c;
// TSIS pom zoo
z = 6 * x + 9*y;
// Pom zoo
z = 6 * x + 9 * y;
z = (7 * x) + (9 * y);
[/chaws]
Tag nrho cov tswv unary yuav tsum yuav sau li tam sim ntawd ua ntej los yog tom qab lawv operand.
[chaws]
// TSIS pom zoo
suav ++;
// Pom zoo
suav ;
// TSIS pom zoo
Kuv –;
// Pom zoo
Kuv–;
// TSIS pom zoo
++ Kuv;
// Pom zoo
++Kuv;
[/chaws]
Thaum sau ntawv thiab semicolons yuav tsum tau taug los ntawm ib qho chaw dawb.
[chaws]
// TSIS pom zoo
rau (rau cov menyuam j = 0;j < 10;j )
// Pom zoo
rau (rau cov menyuam j = 0; j < 10; j )
// TSIS pom zoo
getDetails(daim,hnub nyoog);
// Pom zoo
getDetails(daim, hnub nyoog);
[/chaws]
Txhua casts yuav tsum sau tsis tau txhua qhov chaw
[chaws]
// TSIS pom zoo
(ClassA) m.Get(3);
( ClassA )m.Get(3);
// Pom zoo
(ClassA)m.Get(3);
[/chaws]
Tag nrho keywords xws li yog, Thaum, rau, hloov, thiab caum tom qab ntawm ib qhov chaw xwb.
[chaws]
// TSIS pom zoo
Yog hais tias(tseeb)
// Pom zoo
Yog hais tias (tseeb)
// TSIS pom zoo
Thaum(conut < 7)
// Pom zoo
Thaum (suav < 7)
// TSIS pom zoo
rau(rau cov menyuam j = 0; j < 10; j )
// Pom zoo
rau (rau cov menyuam j = 0; j < 10; j )
// TSIS pom zoo
ntes(Kos e)
// Pom zoo
ntes (Kos e)
[/chaws]
Chav kawm ntawv uas koom hauv Ordering: Tam sim no peb yuav tham txog qhov ordering cov tswv cuab hauv chav kawm ntawv raws li nws tau tas ib qhov chaws indentation thiab formatting. Tub tes tub taw hauv hoob kawm yuav tsum taug ib muab kev txiav txim raws li nram qab no shown.
Qhia 4: Qauv qhia hoob kawm tug ordering
[chaws]
hoob kawm OrderExample
{
// Tus thawj nkag teb chaws yuav tau teb (pas)
rau cov menyuam ib;
rau cov menyuam b;
rau cov menyuam c;
// Lub qhov rooj thib ob yuav tsum tau kawm constructors
OrderExample()
{
// sau ntawv nkag initialization
}
// Lub entery peb yuav tsum muaj kev
getOrder()
{
// Sau hom lus
}
}
[/chaws]
Kom cov kab ntau:
Cov kab ntau ntev yuav tsum tsis tshaj 120 cim. Yog hais tias nws xav tau ntau zog ces muab tso rau hauv ib txoj kab txawv. Tos qab nws yog vim muaj tus muaj peev xwm ua editors thiab luam ntawv cov vaj tse. Feem ntau, cev editors thiab printers yeej lis 120 cim zoo. Li ntawd, yog nws ntau tshaj qhov kam pub ces nws kuj yog ib qho teeb meem lis.
Court ntsiab Code:
Muaj ntau lub sij hawm peb twb tau hnov tias txhua daim cai yuav tsum tau muab sau kom zoo kom yooj yim to taub. Thiab peb tau sau txog tus qauv nyob saum nws. Tab sis, qhov no yuav tsis tau lub zoo tshaj siv. Vim hais tias tus yuav raug hloov yav thiab lub programmer tsis nco qab hloov cov ntaub ntawv. Vim li ntawd lub zoo tshaj siv sau qhov chaws nyob rau hauv ib txoj kev uas nws tau qhia nws tus kheej tsis tau lus saib yog.
Qhia 5: Cov qauv hauv qab no qhia tau hais tias tus tswj qhov ntsiab chaws
[chaws]
// TSIS pom zoo
Yog hais tias ( (ib == zoo) && ( (b == zoo) || (b == zoo) ) )
// Pom zoo
boolean isbetterbest = ( (b == zoo) || (b == zoo) );
Yog hais tias ( (ib == zoo) && isbetterbest )
[/chaws]
Xaus: Deb li peb tau tham tau txawv txoj cai formatting thiab indentation. Peb tau thiab nkag siab txog qhov tseem ceeb ntawm kev sau ntawv zoo chaws uas zoo tshaj plaws indentation thiab formatting txoj kev. Peb yuav tsum nco ntsoov tias indentation muab txoj cai yuav tsum tau taug hos coding kom qhov kev pab cuam yog yooj yim tshwmsim thiab maintainable yav. Li ntawd, peb yuav xaus tias indentation thiab formatting yog ib feem tseem ceeb ntawm kev siv programming thiab developers yuav tsum ua raws li nws qhov pib ntawm lawv cov hauj lwm programming.
