void drawRectangle(Point, Dimension);
//VS
void drawRectangle(Point top_left, Dimension dimensions);

void DrawRectangleFromOrigin(const vec2 &origin, const vec2 &width, const vec2 &height);

void DrawRectangleFromBounds(const vec2 &topLeft,
                             const vec2 &topRight,
                             const vec2 &bottomLeft,
                             const vec2 &bottomRight);

//Draws a rectange on drawing surface specified by global variable CurrentDrawingContext
//Color and style depends on DrawingTools of drawing surface
//@origin: distance from top-left corner in pixels
//@width, height: width and height in pixels
//@return: none
//@throw: IllegalArgument if either width or height is 0 or any pixel of resulting rectangle is outside drawing surface 

//A single shaker sort pass: Leaderboard cannot change drastically in 1 frame
//so it is enough. O(n) FTW.

//Bit hack to place 4 floats in 128 bit variable
//DO NOT change to function call unless you want extreme slowdown. 

//Balances bug in library we cannot change. Do not "fix" 

template< class InputIt, class UnaryPredicate >
InputIt find_if( InputIt first, InputIt last, UnaryPredicate p );

double arcsin(double value)
{
    if (value < -1 || value > 1) //1st layer of self-documentation
        throw domain_error(format(
                            "arcsin defined in range [-1;1] value passed was: %1", value) ) //2nd layer 

class functor
{
int x;
public: 
functor() : x(0) {}
bool operator()(int x)
{
    if (x < 0)
        ++x;
    if (x == 3)
        return true;
    return false;
}
//return third negative value:
auto x = find_if( begin, end, functor());