Check if the Slice of bytes ends with specified suffix in Golang

In Go language slice is more powerful, flexible, convenient than an array, and is a lightweight data structure. The slice is a variable-length sequence which stores elements of a similar type, you are not allowed to store different type of elements in the same slice.
In the Go slice of bytes, you can check whether the given slice ends with the specified prefix or not with the help of HasSuffix() function. This function returns true if the given slice starts with the specified suffix or return false if the given slice does not end with the specified suffix. It is defined under the bytes package so, you have to import bytes package in your program for accessing HasSuffix function.

Syntax:

func HasSuffix(slice_1, suf []byte) bool

Here, slice_1 is the original slice of bytes and suf is the suffix which is also a slice of bytes. The return type of this function is of the bool type.



Example:

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// Go program to illustrate how to check the
// given slice ends with the specified suffix
package main
  
import (
    "bytes"
    "fmt"
)
  
func main() {
  
    // Creating and initializing slices of bytes
    // Using shorthand declaration
    slice_1 := []byte{'G', 'E', 'E', 'K', 'S', 'F',
             'o', 'r', 'G', 'E', 'E', 'K', 'S'}
          
    slice_2 := []byte{'A', 'P', 'P', 'L', 'E'}
  
    // Checking whether the given slice
    // ends with the specified suffix or not
    // Using HasSuffix function
    res1 := bytes.HasSuffix(slice_1, []byte("S"))
    res2 := bytes.HasSuffix(slice_2, []byte("O"))
    res3 := bytes.HasSuffix([]byte("Hello! I am Apple."), []byte("Hello"))
    res4 := bytes.HasSuffix([]byte("Hello! I am Apple."), []byte("Apple."))
    res5 := bytes.HasSuffix([]byte("Hello! I am Apple."), []byte("."))
    res6 := bytes.HasSuffix([]byte("Hello! I am Apple."), []byte("P"))
    res7 := bytes.HasSuffix([]byte("Geeks"), []byte(""))
  
    // Displaying results
    fmt.Println("Result_1: ", res1)
    fmt.Println("Result_2: ", res2)
    fmt.Println("Result_3: ", res3)
    fmt.Println("Result_4: ", res4)
    fmt.Println("Result_5: ", res5)
    fmt.Println("Result_6: ", res6)
    fmt.Println("Result_7: ", res7)
  
}

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Output:

Result_1:  true
Result_2:  false
Result_3:  false
Result_4:  true
Result_5:  true
Result_6:  false
Result_7:  true


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