list.caseChanges the character case of a string or all elements in an array
list.case will read an array from either stdin or it’s
command line parameters, and change that list to be upper or lower
case.
<stdin> -> list.case operation -> <stdout>
list.case operation item1 [ item2 item3 ... ] -> <stdout>
» %[Monday..Friday] -> list.case upper
[
"MONDAY",
"TUESDAY",
"WEDNESDAY",
"THURSDAY",
"FRIDAY"
]
» list.case lower @{ %[Monday..Friday] }
[
"monday",
"tuesday",
"wednesday",
"thursday",
"friday"
]
list.case%[] Array
Builder: Quickly generate arrays@Array Sigil: Expand
values as an arrayThis document was generated from builtins/core/lists/case_doc.yaml.
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Last built on Sun Jan 11 23:29:10 UTC 2026 against commit c710027c71002785e97a5d5fafbc0316e62c78a04812403.
Current version is 7.1.4143 (unknown) which has been verified against tests cases.