使用STL算法进行向量处理

Question

I have a vector and I would like to multiply each of its elements with a scalar value. I wrote the following code for this

int func(const int x)
{
    return 10 * x; // say the scalar value is 10
}
void foo()
{
    // .. compute vector vert
    std::transform(vert.begin(), vert.end(), vert.begin(), ::func);
}    

The code does the job, but I was wondering if there is a more concise implementation possible for this, one that does not require me to define the func function seperately

Answer 1

I still have yet to see a case where transform() actually looks like a good answer... I would strongly suggest:

for (int& x : vert) {
    x *= 10; // or x = func(x)
}

It's clearer and more concise.