Life is all about decisions and repeat your routine

Life is all about Decisions and repeat our routine is an excellent idea which i show you within a moment. Everyday we take so many decisions based on environment conditions, circumstances. Each decision based on cause and effect philosophy. Programmer are wizards who create own world with data and structures. Without data or structure our world is nothing.

Conditions: Conditions help us to take decision based under certain circumstances, such as if a number divisible by 2 at least two times then it's said to be double even.

package main
import (
"fmt"
)
func main() {
const divisible =2
var even int = 4
if even%divisible == 0{
n := even/divisible
n /= divisible
if n ==1 {
fmt.Println("Doubly Even") 
}

}

  }

If you're a developer then you you know this code quite different from other languages syntax. In most languages, you see like this "if (condition)". Yeah it's different but this language compilation power i like most. That's why i like this language. 
        even%divisible == 0  
Always remember taking modules only applicable on integers. Try with float and complex.

Repeat :
golang provide one way for repeat task such iterating array i index. For loop is only choice you have.
For loop in various flavours, we discuss one by one.
      Simple For Loop:

        var count int = 0
for i := 0; i < 5; i++{
count+=1
fmt.Println(count) }

      Little Complex flavour:  

        var arr = [3]int{0,1,2}

for i := 0; i < len(arr); i++{

fmt.Printf("%d\t",arr[i])

}

                  var arr = [3]int{0,1,2}
          arr is the name of array 
          [3] represent size of array
         {0,1,2} inside anything in these braces called values 
          
         %d represent integer type
          %c represent character type
          %T represent type
          %v represent verbose
          %f represent float
          %o represent octal

      Complex Loop:

       var arr = [3]string{"apple","mango","cherry"}
for i,v := range arr{
fmt.Printf("iterate:%d value:%s\n", i, v)
}

             i, v := range arr
   This line give you real flavour of chocolate in your recipe. Always remember range return two values one called iteration and other called value. In further topics , you understand more when you create own function similar like range. If you don't need v then 
     for i , _ := range arr 
 "_" placeholder tells compiler value don't need for this operation. Placeholder come from scala language, but this is our secret spell use it wisely.  
         
Switch-Statement:

       var key byte = 'x'
switch key {
case 'x':
fmt.Printf("%c",key)
break
case 'o':
fmt.Printf("%c",key)
break
default:
fmt.Println("no found")
}