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@beta

beta/error_handling_1.go

Created December 26, 2017 12:43
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error_handling_1.go
func WriteFile(...) (err error) {
...
defer func() {
if cerr := f.Close(); cerr != nil && err == nil {
err = cerr
}
}()
_, err = f.Write(data)
return err
}
Raw
error_handling_2.go
func safeClose(c io.Closer, err *error) {
if cerr := f.Close(); cerr != nil && *err == nil {
*err = cerr
}
}
func WriteFile(...) (err error) {
...
defer safeClose(f, &err)
_, err = f.Write(data)
return err
}
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