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terraform/website/docs/configuration/functions/upper.html.md

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website: Beginnings of "Functions" configuration section Previously we just listed out all of the functions in alphabetical order inside the "Interpolation Syntax" page, but that format doesn't leave much room for details and usage examples. Now we give each function its own page, and categorize them for easier navigation. While many functions are very simple and don't really warrant a full page, certain functions do have additional details that are worth mentioning and this structure scales better for those more complicated functions. So far this includes only the numeric and string functions. Other categories will follow in subsequent commits.
2018-05-07 03:32:16 +02:00
---
layout: "functions"
website: Update functions section page titles
2018-12-20 05:35:11 +01:00
page_title: "upper - Functions - Configuration Language"
website: Beginnings of "Functions" configuration section Previously we just listed out all of the functions in alphabetical order inside the "Interpolation Syntax" page, but that format doesn't leave much room for details and usage examples. Now we give each function its own page, and categorize them for easier navigation. While many functions are very simple and don't really warrant a full page, certain functions do have additional details that are worth mentioning and this structure scales better for those more complicated functions. So far this includes only the numeric and string functions. Other categories will follow in subsequent commits.
2018-05-07 03:32:16 +02:00
sidebar_current: "docs-funcs-string-upper"
description: |-
The upper function converts all cased letters in the given string to uppercase.
---
# `upper` Function
website: Version notes: Add new -> old links to 0.12 language docs (function pages)
2019-01-17 01:33:57 +01:00
-> **Note:** This page is about Terraform 0.12 and later. For Terraform 0.11 and
earlier, see
[0.11 Configuration Language: Interpolation Syntax](../../configuration-0-11/interpolation.html).
website: Beginnings of "Functions" configuration section Previously we just listed out all of the functions in alphabetical order inside the "Interpolation Syntax" page, but that format doesn't leave much room for details and usage examples. Now we give each function its own page, and categorize them for easier navigation. While many functions are very simple and don't really warrant a full page, certain functions do have additional details that are worth mentioning and this structure scales better for those more complicated functions. So far this includes only the numeric and string functions. Other categories will follow in subsequent commits.
2018-05-07 03:32:16 +02:00
`upper` converts all cased letters in the given string to uppercase.
## Examples
```
> upper("hello")
HELLO
> upper("алло!")
АЛЛО!
```
This function uses Unicode's definition of letters and of upper- and lowercase.
## Related Functions
* [`lower`](./lower.html) converts letters in a string to _lowercase_.
* [`title`](./title.html) converts the first letter of each word in a string to uppercase.