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Re: How do I construct a Vector from a C-style array? [message #52425 is a reply to message #52424]

Mon, 23 September 2019 10:33

huadong is currently offline

huadong
Messages: 5
Registered: September 2019

Promising Member

It seens there is no constructor directly match the c-style array, but we can setup a function for instead

#include <algorithm>
using namespace std;

#include <Core/Core.h>
using namespace Upp;

template <typename T>
Vector<T> makeVector(T *p, int n)
{
Vector<T> v;
v.SetCount(n);
copy(p, p+n, v.begin());
return v; // Vector<T> has a move constructor, and it will be called here for high performance
}

int main()
{
int a[] = {1, 2, 3, 4};
for (auto &x : makeVector(a, 4))
printf("x = %d\n", x);
}

[Updated on: Mon, 23 September 2019 11:32]

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[Message index]

		How do I construct a Vector from a C-style array? By: laleksic on Sun, 22 September 2019 20:16
		Re: How do I construct a Vector from a C-style array? By: huadong on Mon, 23 September 2019 09:56
		Re: How do I construct a Vector from a C-style array? By: laleksic on Mon, 23 September 2019 10:06
		Re: How do I construct a Vector from a C-style array? By: huadong on Mon, 23 September 2019 10:33
		Re: How do I construct a Vector from a C-style array? By: mirek on Mon, 23 September 2019 11:47
		Re: How do I construct a Vector from a C-style array? By: Didier on Thu, 03 October 2019 22:58

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