将原始数组初始化为一个值 [英] Initializing Primitive Array to One Value

问题描述

有没有办法初始化一个基本数组，比如一个整数数组，到0？不使用for循环？寻找不涉及for循环的简明代码。

Is there a way to initialize an array of primitives, say a integer array, to 0? Without using a for loop? Looking for concise code that doesn't involve a for loop.

：）

推荐答案

int array[10] = {}; // to 0

std::fill(array, array + 10, x); // to x

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请注意，通用方式结束：

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Note if you want a more generic way to get the end:

template <typename T, size_t N>
T* endof(T (&pArray)[N])
{
    return &pArray[0] + N;
}

获取：

std::fill(array, endof(array), x); // to x (no explicit size)

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应该提到 std :: fill 只是一个包装你想要避免的循环， = {}; 可以用这样的术语来实现。

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It should be mentioned std::fill is just a wrapper around the loop you're trying to avoid, and = {}; might be implemented in such terms.

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