go語言本身沒有類似php中得array_merge的函數,無法直接實現多個數組的合併
但是這類操作在日常開發中真的是很常見,
有兩種方案完成這個操作
1:append()
這個函數固然可以完成以上操作,但是使用append意味着遍歷數組,意味着slice長度的動態擴展
只能說這招很笨
2:copy()
func copy
func copy(dst, src []Type) int
The copy built-in function copies elements from a source slice into a destination slice. (As a special case, it also will copy bytes from a string to a slice of bytes.) The source and destination may overlap. Copy returns the number of elements copied, which will be the minimum of len(src) and len(dst).
所以在使用copy的時候一定要防止重疊
具體內容不贅述,上代碼:
package tool
type CommonFunc struct{}
var commonFunc CommonFunc
func (c *CommonFunc) Merge(s ...[]interface{}) (slice []interface{}) {
switch len(s) {
case 0:
break
case 1:
slice = s[0]
break
default:
s1 := s[0]
s2 := commonFunc.Merge(s[1:]...)//...將數組元素打散
slice = make([]interface{}, len(s1)+len(s2))
copy(slice, s1)
copy(slice[len(s1):], s2)
break
}
return
}
`