It doesn't introduce any reusable validation code.
它没有引入可重用的验证代码。
youdao
Parameter validation code has been removed from the code sample shown here.
此处显示的代码示例中已删除参数验证代码。
Your validation code sticks out because it doesn't look like the other code around it.
您的验证代码很醒目，是因为它看起来不像周围的其他代码。
For those in the learn-to-code movement, this was a welcome validation of their efforts.
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