🥇Ndosaka algebra yechikoro ichidiwa

Kazhinji mubvunzo "nei tichida masvomhu?" Vanopindura chimwe chinhu se "gymnastics yepfungwa." Sekuona kwangu, tsananguro iyi haina kukwana. Kana munhu achiita maekisesaizi emuviri, anoziva zita chairo remapoka emhasuru anokura. Asi nhaurirano pamusoro pemasvomhu dzinoramba dziri mufungo. Ndedzipi “tsandanyama dzepfungwa” dzinodzidziswa nealgebra yechikoro? Hazvina kutombofanana nemasvomhu chaiwo, umo mawanikwe makuru anoitwa. Kukwanisa kutsvaga zvakabva kune mamwe mabasa akaoma kunzwisisa kunopa chii?

Kudzidzisa chirongwa kuvadzidzi vasina simba kwakanditungamira kumhinduro chaiyo kumubvunzo wekuti "sei?" Muchinyorwa chino ndichaedza kuzvisvitsa kwauri.

Muchikoro, nguva yakawanda inopedzerwa pakushandura uye kurerutsa matauriro. Semuenzaniso: 81×2+126xy+49y2 inoda kushandurwa se (9x+7y)2.

Mumuenzaniso uyu, mudzidzi anotarisirwa kurangarira fomula yechikwere yehuwandu

Mune zvimwe zviitiko zvakaoma, mhedzisiro yekutaura inogona kushandiswa kune dzimwe shanduko. Semuyenzaniso:

inoshandurwa kutanga ku

uyezve, nekujekesa (a + 2b) != 0, zvinobuda sezvizvi

Kuti awane mhedzisiro iyi, mudzidzi anofanira kuziva mukutaura kwepakutanga uye ozoshandisa mafomula matatu:

Square of the sum
Musiyano wemakwere
Kuderedza zvinhu zvechikamu chakafanana

Muchikoro chealgebra, inenge nguva yese yatakapedza tichishandura matauriro akadai. Hapana chakachinja zvakanyanya mumasvomhu epamusoro kuyunivhesiti. Takaudzwa kuti tingatora sei zvinobva (integrals, nezvimwewo) uye takapiwa toni yezvinetso. Zvaibatsira here? Mune maonero angu - hongu. Nekuda kwekuita maekisesaizi aya:

Hunyanzvi hwekushandura matauriro hwakakwenenzverwa.
Kunyatsoteerera zvakadzama kwavepo.
Yakanaka yakaumbwa - laconic kutaura uko munhu anogona kuvavarira.

Mune maonero angu, kuva nemafungiro akadaro, unhu uye unyanzvi hunobatsira zvikuru mubasa rezuva nezuva remugadziri. Pamusoro pazvo, kurerutsa chirevo kunoreva kushandura chimiro chayo kuitira kuti nzwisiso ienderane pasina kukanganisa zvinoreva. Izvi zvinokuyeuchidza chimwe chinhu here?

Iyi ndiyo tsanangudzo yekudzokorora kubva mubhuku rezita rimwe chete naMartin Fowler.

Mubhuku rake, munyori anozvigadzira sezvizvi:

Refactoring (n): Shanduko kuchimiro chemukati chesoftware chakagadzirirwa kuita kuti zvive nyore kunzwisisa uye nyore kugadzirisa pasina kukanganisa maitiro anooneka.

Refactor (chiito): shandura chimiro chesoftware nekushandisa dzakateedzana refactorings pasina kukanganisa maitiro ayo.

Iri bhuku rinopa "mafomula" ayo anoda kuzivikanwa mune kodhi kodhi uye mitemo yekuashandura.

Semuenzaniso wakapfava, ini ndichapa "sumo yetsananguro inotsanangura" kubva mubhuku:

if ( (platform.toUpperCase().indexOf(“MAC”) > -1 ) &&
    (browser.toUpperCase().indexOf(“IE”) > -1 )&&
    wasInitialized() && resize > 0 ) {
    // do something
}

Zvikamu zveshoko racho zvinofanirwa kunyorwa muchidimbu chine zita rinotsanangura chinangwa chayo.

final boolean isMacOS = platform.toUpperCase().indexOf(“MAC”) > -1;
final boolean isIEBrowser = browser.toUpperCase().indexOf(“IE”) > -1;
final boolean isResized = resize > 0;
if(isMacOS && isIEBrowser && wasInitialized() && isResized) {
   // do something
}

Fungidzira munhu asingakwanisi kurerutsa mataurirwo ealgebra achishandisa nhamba ine sikweya uye mutsauko wemakona fomula.

Iwe unofunga kuti munhu uyu anogona refactor kodhi here?

Achatokwanisa kunyora kodhi inogona kunzwisiswa nevamwe vanhu kana asina kuumba chinangwa chehupfupi chaihwo? Sekuona kwangu, kwete.

Nekudaro, munhu wese anoenda kuchikoro, uye vashoma vanova programmer. Unyanzvi hwekushandura hunobatsira here kuvanhuwo zvavo? Ndinofunga hongu. Unyanzvi chete hunoshandiswa mune imwe nzira isinganzwisisiki: unofanirwa kuongorora mamiriro ezvinhu uye kusarudza chimwe chiito kuitira kuti uswedere pedyo nechinangwa. Muchidzidzo chefundo chiitiko ichi chinodanwa kutamisa (unyanzvi).

Mienzaniso inoshamisa inomuka panguva yekugadzirisa imba uchishandisa nzira dzakavandudzwa, nzira ye "collective farm". Nekuda kweizvozvo, iwo "manomano" mamwechete uye hacks yehupenyu inooneka, imwe yacho inoratidzwa paKPDV. Munyori wepfungwa iyi aive nechidimbu chehuni, waya nema screws mana. Achirangarira chigadziko chemwenje, akaunganidza chigadziko chemwenje chemba kubva pazviri.

Kunyange paanenge achityaira motokari, mutyairi anogara achicherechedza maitiro ari munyika yakamupoteredza uye kushandisa nzira dzakakodzera kuti asvike kwaari kuenda.

Paunofa, iwe hauzive nezvazvo, zvakangoomera vamwe. Zvakangofanana kana usati wagona masvomhu...

Chii chinoitika kana munhu akatadza kugona kushandurwa kwemazwi? Nguva nenguva, ndinodzidzisa zvidzidzo zvemunhu mumwe nomumwe kuvadzidzi vakanga vakashata pasvomhu kuchikoro. Sezvo mutemo, ivo vanobatirira zvachose pamusoro pechinyorwa chekutenderera. Zvakawanda zvekuti iwe unofanirwa kuita "algebra" navo, asi mumutauro wechirongwa.
Izvi zvinoitika nekuti pakunyora zvishwe, nzira huru ndeyekushandura boka remataurirwo akafanana.

Ngatiti mhedzisiro yechirongwa inofanirwa kutaridzika seizvi:

Nhanganyaya
Chitsauko 1
Chitsauko 2
Chitsauko 3
Chitsauko 4
Chitsauko 5
Chitsauko 6
Chitsauko 7
mhedziso

Chirongwa chidiki chekuzadzisa iyi mhedzisiro inoita seizvi:

static void Main(string[] args)
{
    Console.WriteLine("Введение");
    Console.WriteLine("Глава 1");
    Console.WriteLine("Глава 2");
    Console.WriteLine("Глава 3");
    Console.WriteLine("Глава 4");
    Console.WriteLine("Глава 5");
    Console.WriteLine("Глава 6");
    Console.WriteLine("Глава 7");
    Console.WriteLine("Заключение");
}

Asi iyi sarudzo iri kure neaconic yakanaka. Kutanga iwe unoda kuwana boka rinodzokorora rezviito mukati maro uye wozoshandura. Mhedzisiro yekupedzisira ichaita seizvi:

static void Main(string[] args)
{
    Console.WriteLine("Введение");
    for (int i = 1; i <= 7; i++)
    {
        Console.WriteLine("Глава " + i);
    }
    Console.WriteLine("Заключение");
}

Kana munhu asina kugona masvomhu panguva imwe chete, saka haakwanisi kuita shanduko dzakadaro. Anenge asina hunyanzvi hwakakodzera. Ichi ndicho chikonzero musoro wezvishwe chiri chipingamupinyi chekutanga mukudzidziswa kwemugadziri.

Zvinetso zvakafanana zvinomuka mune dzimwe nzvimbo. Kana munhu asingazivi mashandisiro ezvishandiso zviripo, saka haazokwanisi kuratidza huchenjeri hwezuva nezuva. Ndimi dzakaipa dzichataura kuti maoko ari kukura kubva panzvimbo isiri iyo. Mumugwagwa, izvi zvinozviratidza mukusakwanisa kunyatsoongorora mamiriro ezvinhu uye kusarudza nzira. Izvo zvinogona dzimwe nguva kutungamirira kumigumisiro yakaipa.

Mhedziso:

Tinoda masvomhu ekuchikoro nemayunivhesiti kuitira kuti tiite kuti nyika ive nzvimbo iri nani nemaitiro atiinawo.
Kana iwe uri mudzidzi uye uine dambudziko rekudzidza, edza kudzokera kune yekutanga - yechikoro algebra. Tora bhuku rematambudziko regiredhi 9 uye gadzirisa mienzaniso kubva mariri.

Source: www.habr.com

Ichi ndicho chikonzero algebra yechikoro chesekondari ichidiwa

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