Dan & Bruno,
I didn't realize that it is as simple as that :) Thanks.
Does it involve any extra copy of the byte slice? Or f.Write literally
access the memory of d and only access 2 bytes of data for writing to
the buffer?
On Thu, Jan 18, 2018 at 5:13 PM, Dan Kortschak
<dan.kortsc...@adelaide.edu.au> wrote:
> If you want to write a length shorter than the slice, make the slice
> shorter. No, seriously...
>
> n, err := f.Write(d[:2])
>
> On Thu, 2018-01-18 at 17:04 -0600, Peng Yu wrote:
>> Hi,
>>
>> The following example shows how to write a byte slice to a buffer.
>> But
>> what if I want only write a length shorter (say 2 instead of 5) than
>> the size of the slice. Is there a function that allows users to
>> specify the length to write? Thanks.
>>
>> $ cat main.go
>> #!/usr/bin/env gorun
>> // vim: set noexpandtab tabstop=2:
>> package main
>>
>> import (
>> "os"
>> "bufio"
>> "fmt"
>> )
>>
>> func main() {
>> f := bufio.NewWriter(os.Stdout)
>> d := []byte{'s', 'o', 'm', 'e', '\n'}
>> n, err := f.Write(d)
>> f.Flush()
>> fmt.Printf("wrote %d bytes, error %q\n", n, err)
>> }
>>
>> --
>> Regards,
>> Peng
>>
--
Regards,
Peng
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