正确的方法与阵列的矢量工作 [英] Correct way to work with vector of arrays

问题描述

有人能告诉什么是阵列的矢量工作的正确方法是什么？

Could someone tell what is the correct way to work with a vector of arrays?

我宣布阵列（矢量＆lt;浮动[4]＆GT; ）的载体，但得到了错误：从'诠释'转换到非标量型浮动[4]试图时调整它要求。这是怎么回事了？

I declared a vector of arrays (vector<float[4]>) but got error: conversion from 'int' to non-scalar type 'float [4]' requested when trying to resize it. What is going wrong?

推荐答案

您不能存储在矢量或任何其他容器阵列。类型的元素的要被存储在一个容器（称为容器的值类型的）必须既拷贝构造和可分配。数组是没有。

You cannot store arrays in a vector or any other container. The type of the elements to be stored in a container (called the container's value type) must be both copy constructible and assignable. Arrays are neither.

您可以，但是，使用阵列类模板，像升压，TR1中提供的，和C ++ 0x中：

You can, however, use an array class template, like the one provided by Boost, TR1, and C++0x:

std::vector<std::array<double, 4> >

（你要替换的std ::阵列与的std :: tr1 ::阵列使用包括在C ++ TR1模板，或的boost ::阵列使用的从Boost库模板或者，您也可以编写自己的;它很简单）

(You'll want to replace std::array with std::tr1::array to use the template included in C++ TR1, or boost::array to use the template from the Boost libraries. Alternatively, you can write your own; it's quite straightforward.)

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