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Slices

A slice is a dynamic sequence of elements

Unlike arrays, slices:

  • Do not have a fixed length in their type
  • Can grow and shrink

slice type​

the syntax for a slice type is:

[]Type

Example:

egg x []int

this declares a slice of integers.

to declare a slice type use a type statement:

type Ages []int

slice literal​

you can create a slice using a literal:

x := []int{1, 2, 3}
putln(x)

unlike arrays, you do not specify the length.

accessing elements​

slices use zero-based indexing:

x := []int{10, 20, 30}

putln(x[0])  // 10
putln(x[2])  // 30

slicing an existing slice​

You can create a new slice from an existing one:

x := []int{1, 2, 3, 4, 5}

y := x[1:4]

putln(y)

output:

2
3
4

Notice how the first element of the sliced slice y is included, but the last one isnt

zero value​

the zero value of a slice is just an empty literal, since slices are dynamic

egg x []int

putln(x)

output:

[]