Swift operator functions and custom operators

Code:

structvector2d {var x=0.0, y =0.0}//Vector1 + Vector2Func + (left:vector2d, right:vector2d)vector2d {returnVector2d (X:left.x + right.x, Y:left.y +right.y)}//Vector1-vector2Func-(left:vector2d, right:vector2d)vector2d {returnVector2d (X:left.x-right.x, Y:left.y-right.y)}//-vectorPrefix func-(vector:vector2d)vector2d {returnVECTOR2D (x:-vector.x, y:-vector.y)}//Vector1 + = Vector2Func + =(InOut left:vector2d, right:vector2d) { left= left +Right }//Vector1-= Vector2Func-=(InOut left:vector2d, right:vector2d) { left= left-Right }//++vector1Prefix func + + (inout v:vector2d)vector2d {v+ = vector2d (x:1Y:1)    returnv}//vector1++Postfix func + + (inout v:vector2d)vector2d {v+ = vector2d (x:1Y:1)    returnv}//--vectorPrefix func--(InOut v:vector2d)vector2d {v+ = vector2d (x:1Y:1)    returnv}//vector--Postfix func--(InOut v:vector2d)vector2d {v+ = vector2d (x:1Y:1)    returnv}//Vector1 = = Vector2Func = = (left:vector2d, right:vector2d)Bool {return(Left.x = = right.x) && (Left.y = =right.y)}//Vector1! = Vector2Func! = (left:vector2d, right:vector2d)Bool {return! (left = =Right )}//+++vectorPrefixoperator+++{}prefix func+ + + (inout vector:vector2d)vector2d {vector+=VectorreturnVector}//vector+++Postfixoperator+++{}postfix func+ + + (inout vector:vector2d)vector2d {vector+=VectorreturnVector}//Vector1 +-Vector2Infixoperator+-{associativity left precedence $}func+-(left:vector2d, right:vector2d)vector2d {returnVector2d (X:left.x + right.x, Y:left.y-right.y)}//Vector1-+ Vector2Infixoperator-+ {associativity Left precedence $}func-+ (left:vector2d, right:vector2d)vector2d {returnVector2d (x:left.x-right.x, Y:left.y +right.y)}

Swift operator functions and custom operators