Questions tagged [parameter-pack]
171 questions
0
votes
1 answer
How to get the pointer to an object from a parameter pack
I'm having trouble with getting 2 different objects of the same type to have pointers to different objects using a parameter pack. Here is Controller.h:
using expand_type = int[];
template class Controller {
public:
…
Ryan
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-1
votes
1 answer
How can i combine multiple variadic templates or split parameter pack?
I am currently trying to define a generic multiplication operator for std::functions. I want to do this using multiple variadic templates. The partial specializations look as follows:
template using op_Type = typename…
Qant123
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-1
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1 answer
What does `class function<_Res(_ArgTypes...)>` mean?
The code of std::function in gcc has these two lines:
template
class function<_Res(_ArgTypes...)> // <-- unclear to me
The first part template... _ArgTypes denotes a "parameter pack", i.e., a variadic number…
Ayrat
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2 answers
Call function-pointer using only necessary arguments
Let's assume I have the structure X declared and defined like this:
struct X {
int i;
X(int i = 0) : i(i) { std::cout << "X(int i = " << i << "): X[" << this << "]" << std::endl; }
int multiply(int a, int b = 1) { return i * a * b;…
ChaosNe0
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- 7
-1
votes
1 answer
Initializing vector with variadic template
Basically I need template function, that would compare container's size with some constant. So I need to make std::vector of containers and check if predicate compSize is true.
template < int x, class Container >
bool compSize(Container cont)
{
…
aaletov
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- 1
-4
votes
2 answers
Why I can't use parameter pack in the constructor
Here is my code in hpp:
template
class TelemetryCompactDataStrategy : public TelemetryCommonDataStrategy
{
static_assert((Bits + ...) <= 32, "Bit count must not exceed 32.");
public:
static constexpr auto bitSize = (Bits +…
wcc chn
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