Slices
An array has a fixed size.
A slice, on the other hand, is a dynamically-sized,
flexible view into the elements of an array.
In practice, slices are much more common than arrays.
The type []T
is a slice with elements of type T
.
A slice is formed by specifying two indices, a low and
high bound, separated by a colon:
a[low : high]
This selects a half-open range which includes the first
element, but excludes the last one.
The following expression creates a slice which includes
elements 1 through 3 of a
:
a[1:4]