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                當需要對一個字符串進行頻繁的操作時,謹記在go語言中字符串是不可變的(類似java和c#)。使用諸如`a += b`形式連接字符串效率低下,尤其在一個循環內部使用這種形式。這會導致大量的內存開銷和拷貝。應該使用一個字符數組代替字符串,將字符串內容寫入一個緩存中。例如以下的代碼示例: ~~~ var b bytes.Buffer ... for condition { b.WriteString(str) // 將字符串str寫入緩存buffer } return b.String() ~~~ 注意:由于編譯優化和依賴于使用緩存操作的字符串大小,當循環次數大于15時,效率才會更佳。
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