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* Basic documentation for characters * Upstreamed two extensionality theorems from batteries --------- Co-authored-by: Kim Morrison <kim@tqft.net>
11 lines
496 B
Markdown
11 lines
496 B
Markdown
# Characters
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A value of type `Char`, also known as a character, is a [Unicode scalar value](https://www.unicode.org/glossary/#unicode_scalar_value). It is represented using an unsigned 32-bit integer and is statically guaranteed to be a valid Unicode scalar value.
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Syntactically, character literals are enclosed in single quotes.
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```lean
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#eval 'a' -- 'a'
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#eval '∀' -- '∀'
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```
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Characters are ordered and can be decidably compared using the relational operators `=`, `<`, `≤`, `>`, `≥`.
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