---
name: "Prelude.toUpper_1"
section: "3kaya"
platform: "linux"
package: "kaya"
version: "0.4.4-6.2"
release: "Debian 8 (Jessie)"
platforms: ["linux"]
url: "https://new.carta.tech/Prelude.toUpper_1"
---

# Prelude.toUpper\_1(3kaya)

Returns a copy of the string with all letters upper-cased

## NAME

Prelude::toUpper - Returns a copy of the string with all letters upper-cased

## SYNOPSIS

**String toUpper(** *String s* **)**

## ARGUMENTS

**s** The string to upper-case

## DESCRIPTION

Returns a copy of the string with all letters upper-cased

-

   s = toUpper("Hello World!");\
    // s = "HELLO WORLD!"

This function may give unusual results with non-ASCII characters.

## AUTHORS

Kaya standard library by Edwin Brady, Chris Morris and others (kaya@kayalang.org). For further information see http://kayalang.org/

## LICENSE

The Kaya standard library is free software; you can redistribute it and/or modify it under the terms of the GNU Lesser General Public License (version 2.1 or any later version) as published by the Free Software Foundation.

## RELATED

**Prelude.toLower\_1 (3kaya)**

**Prelude.toUpper (3kaya)**