expression as class member

[mipac]

Is it possible to define a class member as a kfr::gen_sin for example? Or how can I use a generator in class methods?

[samuelriddle]

Hi, expression_pointer<T> has been created exactly for this purpose. Use to_pointer<T> function to convert an expression (or a generator which is expression too) to pointer. T means the type of generated values. Note that expression_pointer has shared-pointer semantics (like std::shared_ptr).

Example:

class MyClass
{
    template <typename ExprTpl>
    MyClass(ExprTpl&& expr_tpl): expr( to_pointer<float>( std::forward<ExprTpl>(expr_tpl) ) ) {}
    void process(float* data, size_t size)
    {
        make_univector(data, size) = expr * 0.5f;
    }
    expression_pointer<float> expr;
};

[mipac]

perfect! thank you very much