如何在 Golang 中加入字节片的元素？
在 Go 语言中切片比一个数组更强大、灵活、方便，是一个轻量级的数据结构。切片是存储相似类型元素的可变长度序列，不允许在同一切片中存储不同类型的元素。 在字节的 Go 切片中，可以借助 Join() 功能加入字节切片的元素。或者换句话说，Join 函数用于连接切片的元素，并返回一个新的字节切片，该切片包含由给定分隔符分隔的所有这些连接的元素。它是在字节包下定义的，所以您必须在程序中导入字节包来访问连接函数。
语法:
func Join(slice_1 [][]byte, sep []byte) []byte
这里， sep 是放置在结果切片的元素之间的分隔符。让我们借助例子来讨论这个概念:
例 1:
// Simple Go program to illustrate
// how to join a slice of bytes
package main
import (
"bytes"
"fmt"
)
// Main function
func main() {
// Creating and initializing
// slices of bytes
// Using shorthand declaration
name := [][]byte{[]byte("Sumit"),
[]byte("Kumar"),
[]byte("Singh")}
sep := []byte("-")
// displaying name of the student in parts
fmt.Printf("First Name: %s", name[0])
fmt.Printf("\nMiddle Name: %s", name[1])
fmt.Printf("\nLast Name: %s", name[2])
// Join the first, middle, and
// last name of the student
// Using Join function
full_name := bytes.Join(name, sep)
// Displaying the name of the student
fmt.Printf("\n\nFull name of the student: %s", full_name)
}
输出:
First Name: Sumit
Middle Name: Kumar
Last Name: Singh
Full name of the student: Sumit-Kumar-Singh
例 2:
// Go program to illustrate how to
// join the slices of bytes
package main
import (
"bytes"
"fmt"
)
// Main function
func main() {
// Creating and initializing slices of bytes
// Using shorthand declaration
slice_1 := [][]byte{[]byte("Geeks"), []byte("for"), []byte("Geeks")}
slice_2 := [][]byte{[]byte("Hello"), []byte("My"),
[]byte("name"), []byte("is"), []byte("Bongo")}
// Displaying slices
fmt.Println("Slice(Before):")
fmt.Printf("Slice 1: %s ", slice_1)
fmt.Printf("\nSlice 2: %s", slice_2)
// Joining the elements of the slice
// Using Join function
res1 := bytes.Join(slice_1, []byte(" , "))
res2 := bytes.Join(slice_2, []byte(" * "))
res3 := bytes.Join([][]byte{[]byte("Hey"), []byte("I"),
[]byte("am"), []byte("Apple")}, []byte("+"))
// Displaying results
fmt.Println("\n\nSlice(after):")
fmt.Printf("New Slice_1: %s ", res1)
fmt.Printf("\nNew Slice_2: %s", res2)
fmt.Printf("\nNew Slice_3: %s", res3)
}
输出:
Slice(Before):
Slice 1: [Geeks for Geeks]
Slice 2: [Hello My name is Bongo]
Slice(after):
New Slice_1: Geeks , for , Geeks
New Slice_2: Hello * My * name * is * Bongo
New Slice_3: Hey+I+am+Apple
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