github.com/spotify/syslog-redirector-golang@v0.0.0-20140320174030-4859f03d829a/blog/content/slices/prog030.go (about)

     1  // Copyright 2013 The Go Authors. All rights reserved.
     2  // Use of this source code is governed by a BSD-style
     3  // license that can be found in the LICENSE file.
     4  
     5  package main
     6  
     7  import (
     8  	"fmt"
     9  )
    10  
    11  var buffer [256]byte
    12  var slice []byte = buffer[100:150]
    13  
    14  func PtrSubtractOneFromLength(slicePtr *[]byte) {
    15  	slice := *slicePtr
    16  	*slicePtr = slice[0 : len(slice)-1]
    17  }
    18  
    19  func main() {
    20  	fmt.Println("Before: len(slice) =", len(slice))
    21  	PtrSubtractOneFromLength(&slice)
    22  	fmt.Println("After:  len(slice) =", len(slice))
    23  }