捷米看世界

1. case sensitive

2. start form main() method

3. variable name can't begin with number

4. declare variable

 => var: mutable

 => val: immutable

 ex. var a: String="Dog" 

       var a = "Dog"

5. Var4+Var5

   Output:

   Int=5

6. Var4==Var5

   Output: 

   Boolean=false

7. var Var =1 

  if (Var3==1){

   print("True")}else{

   println("False")}

   Output: True

8. for(a<-1 to 10){

    println("Value of a :"+a);}

   Output:

   Value of a: 1

   Value of a: 2

...........

9. def mul2(m:Int):Int=m*10

mul2(2)

Outpur: Int=20

10. Data structure

=> Array, list, set tuple, map, option