Multiple return values ​​in C ++

So, before quite some presentation, here is my question:

Why is there no support for multiple returned variables / values ​​in C ++ (yet)?

To give you some more notes:

• What (if any) is a conceptually problem with multiple return values ​​and C ++?
• Is there something in the way the compiler implements saving values ​​from a function that makes multiple return values ​​impossible / ineffective?

Recently, working a lot with lua, I came to ask myself why C ++ does not allow returning several values ​​/ variables from a function. To illustrate this, let me give an example of lua:

-- get the first four values of the fibonacci sequence
local function fib4()
    return 1, 1, 2, 3

local fib0, fib1, fib2, fib3 = fib4()

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• , ,

pro :

struct point_three_dim_t {
    double x;
    double y;
    double z;
};

point_three_dim_t point = getCollisionPoint();

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double x, y, z = getCollisionPoint();

- .

++ 11, , std::tuple, std::tie

std::tuple<double,double,double> getCollisionPoint();

// Using std::tie
double x, y, z;
std::tie( x, y, z ) = getCollisionPoint();

// Using std::tuple
std::tuple<double,double,double> point = getCollisionPoint();

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