| **_Literal Syntax:_** | See [Language Reference - Filesize](/lang-guide/chapters/types/basic_types/filesize.html) |
Nushell also has a special type for file sizes.
As with durations, Nushell supports fractional file sizes and calculations:
```nu
0.5kB
# => 500 B
1GiB / 1B
# => 1073741824
(1GiB / 1B) == 2 ** 30
# => true
```
See the [Language Reference](/lang-guide/chapters/types/basic_types/filesize.html) for a complete list of units and more detail.
### Ranges
| | |
| --------------------- | ---------------------------------------------------------------------------------------------- |
| **_Description:_** | Describes a range of values from a starting value to an ending value, with an optional stride. |
| **_Annotation:_** | `range` |
| **_Literal Syntax:_** | `<start_value>..<end_value>`. E.g., `1..10`. |
| | `<start_value>..<second_value>..<end_value>`. E.g., `2..4..20` |
| **_See also:_** | [Language Guide - Range](/lang-guide/chapters/types/basic_types/range.md) |
Simple example:
```nu
1..5
# => ╭───┬───╮
# => │ 0 │ 1 │
# => │ 1 │ 2 │
# => │ 2 │ 3 │
# => │ 3 │ 4 │
# => │ 4 │ 5 │
# => ╰───┴───╯
```
::: tip
You can also easily create lists of characters with a form similar to ranges with the command [`seq char`](/commands/docs/seq_char.html) as well as with dates using the [`seq date`](/commands/docs/seq_date.html) command.
:::
### Cell Paths
| | |
| --------------------- | --------------------------------------------------------------------------------------------------------------- |
| **_Description:_** | An expression that is used to navigated to an inner value in a structured value. |
| **_Annotation:_** | `cell-path` |
| **_Literal syntax:_** | A dot-separated list of row (int) and column (string) IDs. E.g., `name.4.5`. |
| | Optionally, use a leading `$.` when needed for disambiguation, such as when assigning a cell-path to a variable |
| **_See also:_** | [Language Reference - Cell-path](/lang-guide/chapters/types/basic_types/cellpath.md) |
| | [Navigating and Accessing Structured Data](/book/navigating_structured_data.md) chapter. |
Simple example:
```nu
let cp = $.2
# Return list item at index 2
[ foo bar goo glue ] | get $cp
# => goo
```
### Closures
| | |
| --------------------- | ----------------------------------------------------------------------------------------------------------------------------------------------- |
| **_Description:_** | An anonymous function, often called a lambda function, which accepts parameters and _closes over_ (i.e., uses) variables from outside its scope |
| **_Annotation:_** | `closure` |
| **_Literal Syntax:_** | `{\|args\| expressions }` |
| **_See also:_** | [Language Reference - Closure](/lang-guide/chapters/types/basic_types/closure.md) |