Tabbas, bari mu fara.
Samun fayiloli a cikin kundin adireshi aiki ne gama gari da ake yi a duniyar shirye-shirye. Tara jerin fayiloli a cikin kundin adireshi aiki ne da wataƙila za ku ci karo da shi ko don loda bayanai ne, rarraba bayanai, ko kuma don dalilai na magudi kawai. Yin aiki tare da kundayen adireshi a cikin yarukan tsara shirye-shirye kamar C++ na iya zama da wahala sosai kuma yana buƙatar kyakkyawar fahimtar daidaitaccen ɗakin karatu na harshe da ayyukansa.
C++ Magani zuwa Samun Fayil na Gida
Don samun fayiloli a cikin kundin adireshi, za mu yi amfani da daidaitaccen ɗakin karatu na tsarin fayil wanda aka gabatar a C++17. Wannan ɗakin karatu yana taimaka mana mu'amala da fayiloli da kundayen adireshi. Za mu fi mai da hankali kan directory_iterator da hanya ƙarƙashin wannan ɗakin karatu, waɗanda suka fi dacewa da matsalarmu.
Ana iya amfani da aikin na gaba don dawo da duk fayiloli a cikin kundin adireshi:
#include
#include
void get_files_in_dir (const std :: kirtani& directory) {
don (const auto & shigarwa: std :: filesystem :: directory_iterator (directory)) {
std :: cout << shigarwa. hanya () << std :: endl; } } [/code]
Bayanin Bayanin Mataki Ta Mataki
Bari mu rushe aikin kuma mu fahimci yadda yake aiki.
- Aikin yana farawa da sanarwar `void get_files_in_dir(const std::string& directory)`. Wannan yana bayyana wani aiki mai suna `get_files_in_dir` wanda ke ɗaukar ma'anar kirtani a matsayin hujja kuma baya dawo da komai (rabo). Hujjar tana wakiltar kundin adireshi wanda muke son dawo da fayiloli daga gare ta.
- Bayan haka, ana amfani da kewayon tushen madauki don shiga kowane shigarwa a cikin kundin adireshi. `std :: filesystem :: directory_iterator(directory)` yana ƙirƙirar abu mai jujjuyawa fiye da yadda zai iya shiga kowane fayil a cikin kundin da aka kayyade.
- Hanyar zuwa kowane fayil a cikin kundin adireshi ana buga shi tare da `std :: cout << entry.path() << std :: endl;` 'hanyar()' aiki ne na aji 'directory_entry', da 'shigarwa' abu ne na aji daya. 'hanyar()' tana mayar da nau'in 'hanyar' mai ɗauke da cikakkiyar hanyar 'shigarwa'.
Ikon in C++
Gudanar da fayil yana zama mahimmanci sosai idan ya zo ga adana bayanai da dawo da bayanai. Dole ne mu adana bayanai ta hanyar da za mu iya ɗaukar su da sauri a wani lokaci na gaba. Ɗayan mafi yawan wuraren da muke adana bayanai yana cikin fayiloli.
C++ da
Samar da azuzuwan, kamar directory_iterator da hanya, yana ba da sauƙin sarrafawa da kewaya ta cikin kundayen adireshi. Lambar da muka tattauna ita ce kwatanci mai sauƙi na yadda ƙarfi da abokantaka na wannan ɗakin karatu.
Aikace-aikace gama-gari na Samun Fayil ɗin Darakta
Abubuwan da ake amfani da su na gama-gari don samun fayiloli a cikin kundin adireshi sune aikace-aikace masu ƙarfi na bayanai waɗanda ke buƙatar warwarewa, loda, ko sarrafa fayilolin bayanai daban-daban da aka adana a cikin tsarin kundin adireshi. Ana amfani da shi don sarrafa ayyuka kamar kwafi ko motsi fayiloli, rarraba fayiloli bisa nau'ikan, ko gabaɗaya don samun damar bayanan da aka bazu cikin fayiloli da yawa a cikin kundin adireshi.
Ka tuna, maɓalli don sarrafa fayil da samun damar adireshi ya ta'allaka ne cikin fahimta da ingantaccen amfani da ayyukan da ake da su a cikin ɗakin karatu na tsarin fayil. Zai iya sauƙaƙa aikinku sosai, musamman lokacin da ake mu'amala da babban adadin fayiloli.
