Determine array size in constructor initializer

Question

In the code below I would like array to be defined as an array of size x when the Class constructor is called. How can I do that?

class Class
{
public:
  int         


        

Answer 1

Like already suggested, vector is a good choice for most cases.

Alternatively, if dynamic memory allocation is to be avoided and the maximum size is known at compile time, a custom allocator can be used together with std::vector or a library like the embedded template library can be used.

See here: https://www.etlcpp.com/home.html

Example class:

#include 

class TestDummyClass {
public:
    TestDummyClass(size_t vectorSize) {
        if(vectorSize < MAX_SIZE) {
            testVector.resize(vectorSize);
        }
    }

private:
    static constexpr uint8_t MAX_SIZE = 20;
    etl::vector testVector;
    uint8_t dummyMember = 0;
};