C++ 在构造时初始化一个浮点数组
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Initialize a float array on construction
提问by Aslan986
Is there a way in C++ to construct a float array initializing it's values?
在 C++ 中有没有办法构造一个浮点数组来初始化它的值?
For example, i do:
例如,我这样做:
float* new_arr = new float[dimension];
for(unsigned int i = 0; i < dimension; ++i) new_arr[i] = 0;
Is it possible to do the assignment during the contruction?
是否可以在施工期间进行分配?
回答by none
float* new_arr = new float[dimension]();
回答by hmjd
In this particular case (all zeroes) you can use value initialization:
在这种特殊情况下(全为零),您可以使用值初始化:
float* new_arr = new float[dimension]();
Instead of explicitly using new[]
you could use a std::vector<float>
instead:
new[]
您可以使用 astd::vector<float>
代替显式使用:
std::vector<float> new_vec(dimension, 0);