Almost Always Unsigned
This article argues that programmers should prefer unsigned integers over signed integers, challenging the common industry practice of defaulting to signed types. It demonstrates how to handle common pitfalls like reverse iteration using well-defined unsigned wrapping behavior instead of risky signed casting.
Why it matters
Choosing between signed and unsigned integers has significant implications for software security and stability, particularly in systems programming where undefined behavior from signed overflow can lead to critical vulnerabilities.
The need for signed integer arithmetic is often misplaced as most integers never represent negative values within a program. The indexing of arrays and iteration count of a loop reflects this concept as well. There should be a propensity to use unsigned integers more often than signed, yet despite this, most code incorrectly choses to use signed integers almost exclusively.
The content is a technical argument regarding programming best practices; while it advocates for a specific coding style, it does not align with political or social ideological biases.
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