prepend
Add data to the start of an array
prepend
a data to the start of an array.
<stdin> -> prepend: value -> <stdout>
» a [January..December] -> prepend: 'New Year'
New Year
January
February
March
April
May
June
July
August
September
October
November
December
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
prepend
list.prepend
[ Index ]
: Outputs an element from an array, map or table[[ Element ]]
: Outputs an element from a nested structurea
(mkarray): A sophisticated yet simple way to build an array or listaddheading
: Adds headings to a tableappend
: Add data to the end of an arraycast
: Alters the data-type of the previous function without altering its outputcount
: Count items in a map, list or arrayja
(mkarray): A sophisticated yet simply way to build a JSON arraymatch
: Match an exact value in an arraymsort
: Sorts an array - data type agnosticmtac
: Reverse the order of an arrayregexp
: Regexp tools for arrays / lists of stringsThis document was generated from builtins/core/lists/append_doc.yaml.
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