如何初始化“const std::vector<T>"像一个c数组

how-to initialize #39;const std::vectorlt;Tgt;#39; like a c array(如何初始化“const std::vectorlt;Tgt;像一个c数组)

问题描述

Is there an elegant way to create and initialize a const std::vector<const T> like const T a[] = { ... } to a fixed (and small) number of values?
I need to call a function frequently which expects a vector<T>, but these values will never change in my case.

In principle I thought of something like

namespace {
  const std::vector<const T> v(??);
}

since v won't be used outside of this compilation unit.

For C++11:

vector<int> luggage_combo = { 1, 2, 3, 4, 5 };

Original answer:

You would either have to wait for C++0x or use something like Boost.Assign to do that.

e.g.:

#include <boost/assign/std/vector.hpp>
using namespace boost::assign; // bring 'operator+=()' into scope

vector<int> v;
v += 1,2,3,4,5;

这篇关于如何初始化“const std::vector<T>"像一个c数组的文章就介绍到这了，希望我们推荐的答案对大家有所帮助，也希望大家多多支持编程学习网！