28 lines
699 B
Plaintext
28 lines
699 B
Plaintext
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---
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layout: docs
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page_title: upper - Functions - Configuration Language
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description: >-
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The upper function converts all cased letters in the given string to
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uppercase.
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---
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# `upper` Function
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`upper` converts all cased letters in the given string to uppercase.
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## Examples
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```shell-session
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> upper("hello")
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HELLO
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> upper("алло!")
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АЛЛО!
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```
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This function uses Unicode's definition of letters and of upper- and lowercase.
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## Related Functions
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- [`lower`](/docs/job-specification/hcl2/functions/string/lower) converts letters in a string to _lowercase_.
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- [`title`](/docs/job-specification/hcl2/functions/string/title) converts the first letter of each word in a string to uppercase.
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