Created
January 7, 2017 19:01
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| // before | |
| // 通常這四個都有個共通的因素，才會被擺在一起 | |
| if (rtn == RESULT_A || rtn == RESULT_B || rtn == RESULT_C || rtn == RESULT_D) { | |
| Do1(); | |
| } else { | |
| Do2(); | |
| } | |
| // after | |
| // 所以就把那個因素寫成 function name | |
| function someReason(rtn) { | |
| return rtn == RESULT_A || rtn == RESULT_B || rtn == RESULT_C || rtn == RESULT_D | |
| } | |
| // 這樣就可以直接理解因素是什麼，而不用看實做細節 | |
| if (someReason(rtn)) { | |
| Do1(); | |
| } else { | |
| Do2(); | |
| } |
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好妙啊（反覆咀嚼