Code reviewMediumcr-g078

Subject Unnecessary allocationLevel Mid–Senior~20 minCommon in Code quality & review interviewsIndustries Software development

Question

Review this Go function.

What a strong answer looks like

Separate real bugs from style. Rank issues by severity, point at the root cause rather than the symptom, and suggest a concrete fix — specific and kind.

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Code to reviewgo

1func buildPayload(events []Event) []byte {2    var buf []byte3    for _, e := range events {4        line := fmt.Sprintf("%d:%s\n", e.Ts, e.Name)5        buf = append(buf, []byte(line)...)6    }7    return buf8}

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