An warware: don taswira

A matsayina na mai haɓakawa, na san wannan babban aiki ne. Har yanzu, bari mu raba shi cikin abubuwan da ake buƙata waɗanda ke mai da hankali kan amfani da hanyar taswira ta Java.

A cikin duniyar shirye-shirye, sauƙaƙan sau da yawa shine mafi kyawun manufofin. Wannan gaskiya ne musamman idan ana batun kewaya tsarin bayanai kamar taswira. Ɗaya daga cikin mafi sauƙi amma mafi ƙarfi a cikin wannan daula ya haɗa da amfani da manufar "don taswira" Java. Wannan hanyar tana ba masu amfani damar sake maimaita taswirar bayanan taswira a cikin Java cikin sauƙi. Abubuwan da ke biyowa suna ba da cikakken bincike na yadda ake aiwatar da wannan aikin yadda ya kamata.

Kayayyakin Dama don Aiki

Akwai hanyoyi da yawa don maimaita ta taswira a Java, amma ɗayan mafi inganci shine madauki-kowane. Yana haɗe ikon Iterator da saiti na taswirar. Yin amfani da kowane madauki don kewayawa yana adana bugawa, yana guje wa kurakurai masu alaƙa da ƙa'idar maimaitawa, da garkuwa daga keɓancewar gyare-gyare na lokaci guda.

for(Map.Entry<KeyType, ValueType> entry : map.entrySet()) {
    KeyType key = entry.getKey();
    ValueType value = entry.getValue();
    // do what you have to do here
}

Zurfafa nutsewa cikin Code

Don ƙarin fahimtar wannan tsarin, bari mu karya lambar. A cikin yaren Java, Taswirori.Shigar da taswira ce taswira guda biyu na ƙimar maɓalli ɗaya. Hanyar shigarwaSet() hanya ce da ake samu a cikin mahallin taswirar Java. Ana amfani da shi don mayar da Saiti na taswirar. Wannan yana nufin yana mayar da saiti mai ɗauke da dukkan maɓallan taswirar da madaidaitan ƙimar su.

Set<Map.Entry<KeyType, ValueType>> entrySet = map.entrySet();

Don-kowane madauki, mai jujjuyawar waje, sannan ana amfani da shi akan wannan saitin don maimaitawa. Ga kowane maimaitawa, muna ɗaukar maɓalli da ƙima ta amfani da hanyoyin shigarwa.getKey() da shigarwar.getValue() bi da bi, adana ƙoƙari da rage kurakurai. Sannan za mu iya yin ayyukan da ake buƙata ta amfani da wannan maɓalli da ƙima.

Sauran Laburaren Java da Ayyuka

Java yana ba da wasu zaɓuɓɓuka don daidaita tsarin bayanan taswira kuma. Misali, ta amfani da Iterator, dabarar gado, ko hanyar KeySet() don samun maɓalli kawai da amfani da su don samun ƙima. Ko da yake yin amfani da waɗannan hanyoyin ba daidai ba ne, suna da yawan magana ko rashin inganci. Idan yanayin amfani yana ɗaukar maɓallai da ƙima biyu, Ga-Kowane madauki tare da shigarwaSet() shine hanyar da za a bi.

Tsarin Tarin Java yana ba da wasu tsarin bayanai kuma waɗanda ke da ƙarfinsu, duk da haka don ma'ajin ƙima, taswirori ba su misaltuwa. Hanyar Don Kowacce ba don taswira kaɗai ba, ana iya amfani da ita a cikin tsarin bayanai daban-daban a cikin Tsarin Tarin Java.

Ka tuna, ɗaukar kayan aikin da ya dace na iya yin nisa wajen tabbatar da inganci da ingancin ayyukan shirye-shiryen ku, kuma yin taswirar taswira a Java ba shi da bambanci. Ya kasance idan aka yi la'akari da rikitarwar sararin samaniya ko mawuyacin lokaci, zabar kayan aiki daidai kamar yadda ake bukata shine abin da ke sa mai tsara shirye-shirye!