Remove first element from slice

Go - Remove first element from slice

// https://play.golang.org/p/7oTksbq9ioW


package main

import (
	"fmt"
)

func main() {
	removeOne([]Conn{Conn{i: 100}, Conn{i: 200}, Conn{i: 300}, Conn{i: 400}, Conn{i: 500}})
}

type Conn struct {
	i int
}

func removeOne(freeConn []Conn) {
	for i := 0; i < len(freeConn); i++ {
		last := len(freeConn) - 1
		freeConn[i] = freeConn[last]
		freeConn[last] = Conn{}
		freeConn = freeConn[:last]
		fmt.Println("freeConn after i ", freeConn, i)
		i--
	}
}