# \[Accepted with modification\] SE-0221: Character Properties

**URL:** <https://forums.swift.org/t/accepted-with-modification-se-0221-character-properties/14944>\
**Category:** Announcements\
**Created:** [August 2, 2018, 4:35pm UTC](https://forums.swift.org/t/accepted-with-modification-se-0221-character-properties/14944 "2018-08-02T16:35:18Z")\
**Posts on this page:** 1\
**Showing post:** 3

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**Author:** ![kagemiku](https://sea2.discourse-cdn.com/swift/user_avatar/forums.swift.org/kagemiku/32/7493_2.png) [@kagemiku](https://forums.swift.org/u/kagemiku)\
**Post date:** [June 25, 2019, 8:02am UTC](https://forums.swift.org/t/accepted-with-modification-se-0221-character-properties/14944/3 "2019-06-25T08:02:21Z")

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I have a question about `.asciiValue` property.  
Why type is this `UInt8`, not `Int8`? Are there any specific reasons except that ASCII is non-negative value?

> <https://github.com/apple/swift/blob/main/stdlib/public/core/CharacterProperties.swift#L51...L55>

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