Go - Arrays

• Declare an array
• Ex. var a [3]int
• a[0]
• len(a)
• for idx, v range a {}
• for _, v range a ,{}
  
• Declare with specified values. Default value is zero value
• Ex. var q [3]int = [3]int{1,2,3}
• Ex. var q [3]int = [3]int{1,2}// rest is 0
  
• Size of an array is part of its type. So it will panic to assign [4]int to a variable which is declared as [3]int
• Ex. var q [3]int
• q = [4]int //compile error
  
• Don’t specify length, length will be given with specified values
• Ex. q := [...]int{1,2,3}
• Specify values in the specified index
• Ex. a := [...]int{9:50}
  
• If array element is comparable, then array is comparable. Can use == to check if two array are equal
  
• Arrays with different size are treated as different type, so it is seldom used as function parameters, instead we use slices. (Use different length array to compare will get compile error)