In go lang, an array looks like this -
var x [5]int
where x is an array which is composed of 5 ints.
Same as other c family languages, arrays are indexed starting from zero.
arrays length is fixed and go provides another type slices to work with this situation.
var x []int
x is a slice and has a length of 0.
We can also create a slice using builtin make function.
x := make([]float64, 5, 10)
Where 5 is the length and 10 is the capacity of the underlying array.
If you have programmed in python than there is a way to create slices that look entirely familiar.
arr := []int{1, 2, 3, 4, 5}
x := arr[0:5]
x is a slice of arr and holds all the values. You can change the values by changing the index in x.
x := arr[1:2]
We can also omit the low:high from slice.
x[0:len(arr)]
x[0:]
x[:4]