I found myself confused with the array
and slice
data types.
From Go docs, arrays are described as follows:
There are major differences between the ways arrays work in Go and C. In Go,
- Arrays are values. Assigning one array to another copies all the elements.
- In particular, if you pass an array to a function, it will receive a copy of the array, not a pointer to it.
- The size of an array is part of its type. The types [10]int and [20]int are distinct.
Functions:
As in all languages in the C family, everything in Go is passed by value. That is, a function always gets a copy of the thing being passed, as if there were an assignment statement assigning the value to the parameter. For instance, passing an int value to a function makes a copy of the int, and passing a pointer value makes a copy of the pointer, but not the data it points to.
Why does sort.Ints(arrayValue)
modify the passed variable when I declared it as an array, not as a slice?
Code
var av = []int{1,5,2,3,7}
fmt.Println(av)
sort.Ints(av)
fmt.Println(av)
return
Output
[1 5 2 3 7]
[1 2 3 5 7]