# `append` - Command Reference

> Add data to the end of an array

## Description

`append` data to the end of an array.

## Usage

    <stdin> -> append: value -> <stdout>

## Examples

    » a: [Monday..Sunday] -> append: Funday
    Monday
    Tuesday
    Wednesday
    Thursday
    Friday
    Saturday
    Sunday
    Funday

## Detail

`prepend` and `append` are data type aware:

    » tout json [1,2,3] -> append 4 5 6 bob
    Error in `append` (1,22): cannot convert 'bob' to a floating point number: strconv.ParseFloat: parsing "bob": invalid syntax

## Synonyms

* `append`
* `list.append`


## See Also

* [`[[` (element)](../commands/element.md):
  Outputs an element from a nested structure
* [`[` (index)](../commands/index.md):
  Outputs an element from an array, map or table
* [`[` (index)](../commands/index.md):
  Outputs an element from an array, map or table
* [`[` (range) ](../commands/range.md):
  Outputs a ranged subset of data from STDIN
* [`a` (mkarray)](../commands/a.md):
  A sophisticated yet simple way to build an array or list
* [`addheading` ](../commands/addheading.md):
  Adds headings to a table
* [`cast`](../commands/cast.md):
  Alters the data type of the previous function without altering it's output
* [`count`](../commands/count.md):
  Count items in a map, list or array
* [`ja` (mkarray)](../commands/ja.md):
  A sophisticated yet simply way to build a JSON array
* [`match`](../commands/match.md):
  Match an exact value in an array
* [`msort` ](../commands/msort.md):
  Sorts an array - data type agnostic
* [`mtac`](../commands/mtac.md):
  Reverse the order of an array
* [`prepend` ](../commands/prepend.md):
  Add data to the start of an array
* [`regexp`](../commands/regexp.md):
  Regexp tools for arrays / lists of strings