Reslicing

Introduction

We saw that a slice is often made smaller than the underlying array initially, like this:

slice1 := make([]type, start_length, capacity)

Here, start_length is the length of slice and capacity is the length of the underlying array. This is useful because now our slice can grow until capacity. Changing the length of the slice is called reslicing, it is done like:

slice1 = slice1[0:end]

where end is another end-index (length) than before.

Resizing a slice by 1 can be done as follows:

sl = sl[0:len(sl)+1] // extend length by 1

A slice can be resized until it occupies the whole underlying array.

Explanation

The following program is a detailed implementation of reslicing a slice: