Procs

proc encode(obj: string; encoding = "utf-8"; errors = "strict"): string {.
    ...raises: [Exception, ValueError, OSError, IOError, EOFError, KeyError],
    tags: [RootEffect].}

proc decode(obj: string; encoding = "utf-8"; errors = "strict"): string {.
    ...raises: [Exception, ValueError, OSError, IOError, EOFError, KeyError],
    tags: [RootEffect].}