String Builder Optimization (ARCH9071)

Key swift.performance.string-builder-optimization · Severity info · Category performance

Flags long chains of + string concatenation (five or more operands) - slow to type-check and to run.

Incorrect

let url = base + "/" + version + "/" + resource + "/" + id

Correct

let url = "\(base)/\(version)/\(resource)/\(id)"

Fix

Use string interpolation.