How to Access, Modify, and Remove the Last Element of a Slice in Go?

Extracting the Last Element of a Slice in Go

In Go, accessing the last element of a slice can be done in several ways. One common approach is to use the following syntax:

slice[len(slice)-1]

This expression returns the last element of the slice. However, the result is of type interface{}, so it may need to be type-casted.

Another option is to use the last function, which returns the last element of the slice as the slice's type:

import "github.com/dustin/go-humanize"

last := humanize.Slice(slice)

For simply reading the last element, this is sufficient. However, if you need to remove or modify the last element, this method is not ideal.

In such cases, you can use slice operations to work with the last element. To remove the last element, use:

slice = slice[:len(slice)-1]

To update the last element, use:

slice[len(slice)-1] = newValue

These techniques provide a more direct and efficient way to handle the last element of a slice in Go.

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