在您调用函数时,仅运行相应的片断。
在重命名操作受到支持之前,该函数仅接受固定的参数。
Before rename operations were supported, the function took only the fixed arguments.
值得庆幸的是,大多数函数仅需要报告少数可能的错误,因此,要恰当地处理它们亦非难事。
Luckily, most functions will only have a few possible errors to report, so it's usually not that hard to handle them appropriately.
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