c# - C++/C# 数组移位等效项

Question

我正在尝试将一些代码从 C++ 转换为 C#，但我不确定这两个语句是否等同。

C++(源代码):

float* df = new float[ length ]  // length is a previously initialized int
int coefIND = 0;
do
{
    float* const df2 = df + coefIND;
    // some element reassignments such as df2[1] = x[...] * y[...];
    coefIND += 4;
}
while(coefINF < length);
delete[] df;  // this occurs much later though

C#(翻译？):

float[] df = new float[ length ]
int coefIND = 0;
do
{
     Array.Copy(df, 0, df, coefIND, length);
     // some element reassignments such as df[1] = x[...] * y[...];
     coefIND += 4;
}
while(coefIND < length)

感谢您的帮助，格雷格

Answer 1

您没有显示 df2 的 C# 定义，但最好的解决方案可能是将 coefIND 添加到代码主体中的每个索引，而不是复制到临时数组(然后再返回)。与 C++ 不同，安全的 C# 不允许您将指向元素的指针存储在数组中。