Array Prepend: prepend
Less than 1 minuteBuiltin CommandsList / Array Editing
prepend
Array Prepend: Add data to the start of an array
Description
prepend
a data to the start of an array.
Usage
<stdin> -> prepend: value -> <stdout>
Examples
» a [January..December] -> prepend: 'New Year'
New Year
January
February
March
April
May
June
July
August
September
October
November
December
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
prepend
list.prepend
See Also
- Add Heading:
addheading
: Adds headings to a table - Array Append:
append
: Add data to the end of an array - Array Reverse:
mtac
: Reverse the order of an array - Array Sort:
msort
: Sorts an array - data type agnostic - Count:
count
: Count items in a map, list or array - Create JSON Array:
ja
: A sophisticated yet simply way to build a JSON array - Create Streamable Array
a
: A sophisticated yet simple way to stream an array or list (mkarray) - Define Type:
cast
: Alters the data-type of the previous function without altering its output - Get Item Property:
[ Index ]
: Outputs an element from an array, map or table - Get Nested Element:
[[ Element ]]
: Outputs an element from a nested structure - Regex Patterns:
regexp
: Regexp tools for arrays / lists of strings - String Match:
match
: Match an exact value in an array
This document was generated from builtins/core/lists/append_doc.yaml.