> For the complete documentation index, see [llms.txt](https://trizen.gitbook.io/sidef-lang/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://trizen.gitbook.io/sidef-lang/programming_tasks/a/array_length.md).

# Array length

```ruby
var arr = ['apple', 'orange'];
say arr.len;        #=> 2
say arr.end;        #=> 1 (zero based)
```