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Constructs a tuple object whose elements are references to the arguments in args, in the same order.
This allows a set of objects to act as a tuple, which is especially useful to unpack tuple objects.
The special constant ignore can be used to specify elements of a tuple to be ignored instead of tied to a specific object.
Output:
Notice though that the arguments may be modified by any use of the returned object.
Reference
C library:
- <cassert> (assert.h)
- <cctype> (ctype.h)
- <cerrno> (errno.h)
-
<cfenv> (fenv.h)C++11
- <cfloat> (float.h)
-
<cinttypes> (inttypes.h)C++11
- <ciso646> (iso646.h)
- <climits> (limits.h)
- <clocale> (locale.h)
- <cmath> (math.h)
- <csetjmp> (setjmp.h)
- <csignal> (signal.h)
- <cstdarg> (stdarg.h)
-
<cstdbool> (stdbool.h)C++11
- <cstddef> (stddef.h)
-
<cstdint> (stdint.h)C++11
- <cstdio> (stdio.h)
- <cstdlib> (stdlib.h)
- <cstring> (string.h)
-
<ctgmath> (tgmath.h)C++11
- <ctime> (time.h)
-
<cuchar> (uchar.h)C++11
- <cwchar> (wchar.h)
- <cwctype> (wctype.h)
Containers:
-
<array>C++11
- <deque>
-
<forward_list>C++11
- <list>
- <map>
- <queue>
- <set>
- <stack>
-
<unordered_map>C++11
-
<unordered_set>C++11
- <vector>
-
Input/Output:
Multi-threading:
-
<atomic>C++11
-
<condition_variable>C++11
-
<future>C++11
-
<mutex>C++11
-
<thread>C++11
-
Other:
- <algorithm>
- <bitset>
-
<chrono>C++11
-
<codecvt>C++11
- <complex>
- <exception>
- <functional>
-
<initializer_list>C++11
- <iterator>
- <limits>
- <locale>
- <memory>
- <new>
- <numeric>
-
<random>C++11
-
<ratio>C++11
-
<regex>C++11
- <stdexcept>
- <string>
-
<system_error>C++11
-
<tuple>C++11
-
<type_traits>C++11
-
<typeindex>C++11
- <typeinfo>
- <utility>
- <valarray>
<tuple>
classes
-
tupleC++11
-
tuple_elementC++11
-
tuple_sizeC++11
-
functions
-
forward_as_tupleC++11
-
getC++11
-
make_tupleC++11
-
tieC++11
-
tuple_catC++11
-
objects
-
ignoreC++11
-
function template
<tuple>
std::tie
template<class... Types> tuple<Types&...> tie (Types&... args) noexcept;
template<class... Types> constexpr tuple<Types&...> tie (Types&... args) noexcept;
Tie arguments to tuple elements
This allows a set of objects to act as a tuple, which is especially useful to unpack tuple objects.
The special constant ignore can be used to specify elements of a tuple to be ignored instead of tied to a specific object.
Parameters
- args
- List of objects (lvalues) to be tied as elements of a tuple.
Return Value
A tuple with lvalue references to args.Example
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Output:
myint contains: 10 mychar contains: a |
Data races
None introduced by this call.Notice though that the arguments may be modified by any use of the returned object.
Exception safety
No-throw guarantee: this function never throws exceptions.See also
- make_tuple
- Construct tuple (function template)
- forward_as_tuple
- Forward as tuple (function template)
- get
- Get element (function template)
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Spotted an error? contact us