Prepend To List (prepend)
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prepend
)
Prepend To List (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 - Append To List (
append
): Add data to the end of an array - Count (
count
): Count items in a map, list or array - Create JSON Array (
ja
): A sophisticated yet simply way to build a JSON array - Define Type (
cast
): Alters the data-type of the previous function without altering its output - Get Item (
[ Index ]
): Outputs an element from an array, map or table - Get Nested Element (
[[ Element ]]
): Outputs an element from a nested structure - Match String (
match
): Match an exact value in an array - Regex Operations (
regexp
): Regexp tools for arrays / lists of strings - Reverse Array (
mtac
): Reverse the order of an array - Sort Array (
msort
): Sorts an array - data type agnostic - Stream New List (
a
): A sophisticated yet simple way to stream an array or list (mkarray)
This document was generated from builtins/core/lists/append_doc.yaml.