Go每日一题

Posted 2021-03-20 dzone

new(T) 与 make(T, args)

合并数组

package main

import (
    "fmt"
)

func main() {
    list := []int{} // new([]int) 返回的是指针，非集合，调append会报错
    list = append(list, 1)
    fmt.Println(list)

    s1 := []int{1, 2, 3}
    s2 := []int{4, 5}
    s1 = append(s1, s2...)  // 合并两个数组，必须带 “...”
    fmt.Println(s1)
}