go-control-flow
Go Control Flow
Read references/SWITCH-PATTERNS.md when using switch statements, type switches, or break with labels
Read references/BLANK-IDENTIFIER.md when using
_, blank identifier imports, or compile-time interface checks
If with Initialization
if and switch accept an optional initialization statement. Use it to scope
variables to the conditional block:
if err := file.Chmod(0664); err != nil {
log.Print(err)
return err
}
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599go-documentation
Use when writing or reviewing documentation for Go packages, types, functions, or methods. Also use proactively when creating new exported types, functions, or packages, even if the user doesn't explicitly ask about documentation. Does not cover code comments for non-exported symbols (see go-style-core).
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572go-error-handling
Use when writing Go code that returns, wraps, or handles errors — choosing between sentinel errors, custom types, and fmt.Errorf (%w vs %v), structuring error flow, or deciding whether to log or return. Also use when propagating errors across package boundaries or using errors.Is/As, even if the user doesn't ask about error strategy. Does not cover panic/recover patterns (see go-defensive).
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