重構-衛語句

原創 imduan 2020-02-23 01:50

單一出口 規則，其實不是那麼有用。導致函數嵌套太深, 代碼主邏輯不夠突出.
大量的嵌套條件分支是很容易讓人望而卻步的代碼，我們應該極力避免這種代碼的出現

保持代碼清晰纔是最關鍵的.

條件表達式通常有2種表現形式。
第一：所有分支都屬於正常行爲；
第二：條件表達式提供的答案中只有一種是正常行爲，其他都是不常見的情況；

這個時候採用衛語句.
應該單獨檢查該不常見的條件，並且直接返回.

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