| (1) | ||||
| (since C++11) (until C++14) | |||
| (since C++14) | |||
| (2) | ||||
| (since C++11) (until C++14) | |||
| (since C++14) | |||
| (3) | ||||
| (since C++11) (until C++14) | |||
| (since C++14) | |||
| (4) | (since C++17) | ||
| (5) | (since C++14) | ||
| (6) | (since C++14) | ||
| (7) | (since C++14) | ||
| (8) | (since C++17) |
1-4) Extracts the
Ith element from the tuple. I is an integer value in [0, sizeof...(Types)). 5-8) Extracts the element of the tuple
t whose type is T. Fails to compile if the tuple has more than one element of that type.Parameters
| t | - | tuple whose contents to extract |
Return value
A reference to the selected element of t.
Exceptions
noexcept specification: noexceptExample
1 2 3 4 5 6 7 8 9 10 11 12 13 14 | #include <iostream>#include <string>#include <tuple> int main(){ auto t = std::make_tuple(1, "Foo", 3.14); // index-based access std::cout << "(" << std::get<0>(t) << ", " << std::get<1>(t) << ", " << std::get<2>(t) << ")\n"; // type-based access std::cout << "(" << std::get<int>(t) << ", " << std::get<const char*>(t) << ", " << std::get<double>(t) << ")\n";} |
Output:
1 2 | (1, Foo, 3.14)(1, Foo, 3.14) |
See also
accesses an element of an array (function template) | |
| (C++11) | accesses an element of a pair (function template) |
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