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How to Optimize our code efficiency.

In Golang structs are very powerful and common use. In previous article, I show you how to write a struct but this is not efficient way to write. 

type Point struct{ X,Y int }

point := Point{1,2}
                code.1.1 


There are two types struct literals :
                In first type, study above code. Programmer usually avoid this because it's difficult to remember about fields, it's should be in right order. Programmer use this in custom packages and smaller structs types.

                 In second type Programmer like very much , it's more powerful then previous type.
                 anim := GIF.gif{loopCount: nframes}
               
                 If any field value omit then that case value initialize with zero. Structs can also pass by reference [Pointers]. As you know, passing structs as a parameters with the help of pointers. Pointers create copy and use particular copy .

Structs Literals access through pointer.
                     p := &Point{1,2}
                      p := new (Point)
                      *p = Point{1,2}

Structs Comparable 
                 We can also compare structs . "==" & "!=" are common operators for comparison. Structs can also comparable with other types , in that case maps are very helpful.

Embed Field and Anonymous :

      Embed Field :
                  
package main
import ("fmt")
type Point struct{
X,Y int
}
type Circle struct{
Center Point // embed structs-1
Radius int
}
type Wheel struct{
Circle Circle //embed structs-2
Spokes int
}
func main(){
var w Wheel
w.Circle.Center.X =2
w.Circle.Center.Y =2
w.Circle.Radius =3
w.Spokes =3
fmt.Println(w)
} In embed field we can create a structure of any type that structure is the field of next struct. In Wheel or circle you can see this. Anonymous Field: type Circle struct { Point Radius int } type Wheel struct { Circle Spokes int } var w Wheel w.X = 8 // equivalent to w.Circle.Point.X = 8 w.Y = 8 // equivalent to w.Circle.Point.Y = 8 w.Radius = 5 // equivalent to w.Circle.Radius = 5 w.Spokes = 20 Anonymous Field similar like embed field but there 's a great difference. In anonymous field, field have a type but field don't have any name. That's why we called them anonymous field.
package main
import ("fmt")
type Point struct{
X,Y int
}
type Circle struct{
Point //anonymous case#1
Radius int
}
type Wheel struct{
Circle //anonymous case#2
Spokes int
}
func main(){
var wheel Wheel
wheel.Circle.Point.X =4
wheel.Circle.Point.Y =4
wheel.Circle.Radius =4
wheel.Spokes =4
fmt.Println(wheel)
w:= Wheel{Circle{Point{4,4},3},2}
fmt.Printf("%v",w)
}
Because ‘‘anonymous’’ fields do have implicit names, you can’t have two anonymous fields of the same type since their names would conflict. And because the name of the field is implicitly determined by its type, so too is the visibility of the field. You can follow any convention, which you like. This is just a example, upcoming articles . I will discuss you, Why Composition is so important?


           

                   
                   

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