CAT 040

CAT-040 — String.build for simple literals

Severity: hint | Confidence: low | Auto-fix: ❌

Caution

Low confidence rule — may produce false positives.

Description

String.build for simple literals — Using String.build for a simple concatenation of literals adds unnecessary complexity. Use string interpolation.

Bad code

String.build { |io| io << "hello" << " " << "world" }

Benchmark

Note

See bench results at bench/cat-040/