29 lines
667 B
Markdown
29 lines
667 B
Markdown
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---
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layout: "docs"
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page_title: "upper - Functions - Configuration Language"
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sidebar_current: "configuration-functions-string-upper"
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description: |-
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The upper function converts all cased letters in the given string to 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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```
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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`](./lower.html) converts letters in a string to _lowercase_.
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* [`title`](./title.html) converts the first letter of each word in a string to uppercase.
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