# text.upperCase · Rell standard library · Chromia Docs (concept)

> pure function upperCase(): text Deprecated (for removal): Use 'upper_case' instead Returns the text obtained by converting all alphabetic characters in thi

Source: https://docs.chromia.com/pages/rell-stdlib/-rell-system-library/root/text/upper-case/

FUNCTION

# text.upperCase

```signature
pure function upperCase(): text
```

**Deprecated** (for removal): Use 'upper\_case' instead

Returns the text obtained by converting all alphabetic characters in this text to upper case.

Since 0.9.0

**Alias of** [text.upper\_case](https://docs.chromia.com/pages/rell-stdlib/-rell-system-library/root/text/upper_case/)

[View this page on docs.chromia.com](https://docs.chromia.com/pages/rell-stdlib/-rell%20-system%20-library/%5Broot%5D/text/upper-case.html)Generated API reference, mirrored from the live docs