Created
August 30, 2018 16:10
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example of makro with parameter
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func CopyFile(src, dst string) error { | |
makro checkErr(place string) { | |
if err != nil { | |
return fmt.Errorf("copy %s %s failed after %s: %v", src, dst, place, err) | |
} | |
} | |
r, err := os.Open(src) | |
checkErr("open") | |
defer r.Close() | |
w, err = os.Create(dst) | |
checkErr("create") | |
defer w.Close() | |
_, err = io.Copy(w, r) | |
checkErr("copy") | |
err = w.Close() | |
checkErr("close") | |
return nil | |
} |
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