在 Go 语言中切片比数组更强大、灵活、方便,是一种轻量级的数据结构。切片是一个可变长度的序列,用于存储相似类型的元素,不允许在同一个切片中存储不同类型的元素。
在 Go 字节切片中,您可以在Join()函数的帮助下连接字节切片的元素。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,其中包含由给定分隔符分隔的所有这些连接元素。它是在 bytes 包下定义的,因此您必须在程序中导入 bytes 包才能访问 Join函数。
句法:
func Join(slice_1 [][]byte, sep []byte) []byte
在这里, sep是放置在结果切片的元素之间的分隔符。让我们在示例的帮助下讨论这个概念:
示例 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
示例 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