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                #### 什么是切片 ``` //不寫元素個數叫切片,必須寫元素個數的叫數組 var s1 []int s2:=make([]int,5) ``` #### 追加數據 ``` 使用append追加數據,切片的地址可能發生變化,如果容量擴容導致輸出存儲溢出,切片會自動尋找新的空間存儲數據,同時也會將之前的數據進行釋放 s2=append(s2,6,7,8) ``` #### 截取 ``` //[起始下標:] slice1:=s2[2:] //[:結束位置] slice2:=s2[:4] //[起始下標:結束位置] slice3:=s2[2:5] //[起始下標:結束位置:容量] slice4:=s2[0:2:4] //[:] 獲取切片中所有數據 slice5:=s2[:] ``` #### 拷貝 ``` //將s1中的數據拷貝到s2中,s2中要有足夠的容量,拷貝后,s1和s2是兩個獨立空間,不會互相影響 copy(s2, s1) ``` #### 切片作為函數參數 ``` 切片作為函數參數是地址傳遞,形參可以改變實參的值,建議切片代替數組 ```
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