Fungsi <unordered_map>
swap (unordered_map)swap (unordered_multimap)
pertukaran (unordered_map)
Menukar isi dua kontainer.
template <class Key, class Ty, class Hash, class Pred, class Alloc>
void swap(
unordered_map <Key, Ty, Hash, Pred, Alloc>& left,
unordered_map <Key, Ty, Hash, Pred, Alloc>& right);
Parameter
Kunci
Jenis kunci.
Ty
Jenis yang dipetakan.
Hash
Jenis objek fungsi hash.
Pred
Jenis objek fungsi perbandingan kesetaraan.
Alokasi
Kelas alokator.
left
Kontainer pertama yang akan ditukar.
right
Kontainer kedua yang akan ditukar.
Keterangan
Fungsi templat menjalankan left.
unordered_map::swap(right)
.
Contoh
// std__unordered_map__u_m_swap.cpp
// compile with: /EHsc
#include <unordered_map>
#include <iostream>
typedef std::unordered_map<char, int> Mymap;
int main()
{
Mymap c1;
c1.insert(Mymap::value_type('a', 1));
c1.insert(Mymap::value_type('b', 2));
c1.insert(Mymap::value_type('c', 3));
// display contents " [c 3] [b 2] [a 1]"
for (Mymap::const_iterator it = c1.begin();
it != c1.end(); ++it)
std::cout << " [" << it->first << ", " << it->second << "]";
std::cout << std::endl;
Mymap c2;
c2.insert(Mymap::value_type('d', 4));
c2.insert(Mymap::value_type('e', 5));
c2.insert(Mymap::value_type('f', 6));
c1.swap(c2);
// display contents " [f 6] [e 5] [d 4]"
for (Mymap::const_iterator it = c1.begin();
it != c1.end(); ++it)
std::cout << " [" << it->first << ", " << it->second << "]";
std::cout << std::endl;
swap(c1, c2);
// display contents " [c 3] [b 2] [a 1]"
for (Mymap::const_iterator it = c1.begin();
it != c1.end(); ++it)
std::cout << " [" << it->first << ", " << it->second << "]";
std::cout << std::endl;
return (0);
}
[c, 3] [b, 2] [a, 1]
[f, 6] [e, 5] [d, 4]
[c, 3] [b, 2] [a, 1]
swap (unordered_multimap)
Menukar isi dua kontainer.
template <class Key, class Ty, class Hash, class Pred, class Alloc>
void swap(
unordered_multimap <Key, Ty, Hash, Pred, Alloc>& left,
unordered_multimap <Key, Ty, Hash, Pred, Alloc>& right);
Parameter
Kunci
Jenis kunci.
Ty
Jenis yang dipetakan.
Hash
Jenis objek fungsi hash.
Pred
Jenis objek fungsi perbandingan kesetaraan.
Alokasi
Kelas alokator.
left
Kontainer pertama yang akan ditukar.
right
Kontainer kedua yang akan ditukar.
Keterangan
Fungsi templat menjalankan left.
unordered_multimap::swap(right)
.
Contoh
// std__unordered_map__u_mm_swap.cpp
// compile with: /EHsc
#include <unordered_map>
#include <iostream>
typedef std::unordered_multimap<char, int> Mymap;
int main()
{
Mymap c1;
c1.insert(Mymap::value_type('a', 1));
c1.insert(Mymap::value_type('b', 2));
c1.insert(Mymap::value_type('c', 3));
// display contents " [c 3] [b 2] [a 1]"
for (Mymap::const_iterator it = c1.begin();
it != c1.end(); ++it)
std::cout << " [" << it->first << ", " << it->second << "]";
std::cout << std::endl;
Mymap c2;
c2.insert(Mymap::value_type('d', 4));
c2.insert(Mymap::value_type('e', 5));
c2.insert(Mymap::value_type('f', 6));
c1.swap(c2);
// display contents " [f 6] [e 5] [d 4]"
for (Mymap::const_iterator it = c1.begin();
it != c1.end(); ++it)
std::cout << " [" << it->first << ", " << it->second << "]";
std::cout << std::endl;
swap(c1, c2);
// display contents " [c 3] [b 2] [a 1]"
for (Mymap::const_iterator it = c1.begin();
it != c1.end(); ++it)
std::cout << " [" << it->first << ", " << it->second << "]";
std::cout << std::endl;
return (0);
}
[c, 3] [b, 2] [a, 1]
[f, 6] [e, 5] [d, 4]
[c, 3] [b, 2] [a, 1]
Baca juga
Saran dan Komentar
https://aka.ms/ContentUserFeedback.
Segera hadir: Sepanjang tahun 2024 kami akan menghentikan penggunaan GitHub Issues sebagai mekanisme umpan balik untuk konten dan menggantinya dengan sistem umpan balik baru. Untuk mengetahui informasi selengkapnya, lihat:Kirim dan lihat umpan balik untuk