docs(ch03-02): clarify unsigned integers include zero (#4773)#4775
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docs(ch03-02): clarify unsigned integers include zero (#4773)#4775Dodothereal wants to merge 1 commit into
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Fixes rust-lang#4773: unsigned integers can represent zero and positive numbers (non-negative), not just positive numbers. The previous phrasing was mathematically imprecise and could confuse learners. Replaced 'only ever be positive and can therefore be represented without a sign' with 'always non-negative (that is, zero or positive), so it can be represented without a sign' per the issue's suggested fix. Co-authored-by: AI assistance (Dodothereal) <129273127+Dodothereal@users.noreply.github.com>
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Fixes #4773
Summary
Rust's unsigned integer types can represent zero and positive numbers
(non-negative), not just positive numbers. The current phrasing in
Chapter 3.2 ('only ever be positive') is mathematically imprecise.
This commit adopts the wording suggested in the issue: 'always
non-negative (that is, zero or positive), so it can be represented
without a sign'. Doc-only edit.
Test plan
AI assistance
Change prepared with help from an AI coding assistant. The diff was reviewed and edited before submission.