Thank you all for the quick replies - they were very helpful.
On Monday, 22 August 2016 17:28:59 UTC+1, adon...@google.com wrote:
>
> On Monday, 22 August 2016 11:51:59 UTC-4, JC wrote:
>>
>> Given:
>>
>> func main() {
>> r := 'a'
>> s := "a"
>> fmt.Println(r)
>> fmt.Println(s)
>> }
>>
>> My very possibly incorrect understanding is that the rune r holds a
>> Unicode code-point encoded with UTF-8 and stored as integer value, in this
>> case 97, as type int32.
>>
>
> The rune r holds the Unicode code point 97 directly, without an encoding.
> An encoding is a mapping from code points to byte sequences. Since there
> are no bytes here, there is no encoding. A rune is just a number.
>
>
>
>> s is of type string, and contains a code-point encoded by UTF-8, but
>> which will be stored in a slice of type byte (which will use just one
>> uint8 in this case). Assuming that is all correct, then my questions
>> are:
>>
>
> A string is an immutable finite sequence of bytes. This string contains
> the UTF-8 encoding of the single code point 'a', and that encoding consists
> of the single byte 97. Code points less than 128 are encoded using a
> single byte, and are thus compatible with ASCII.
>
>
>
>> 1. Will the rune / any rune always use 32 bits?
>>
>
> Yes.
>
>
>> 2. Why does printing r output the integer value, but printing s yield
>> the code-point itself?
>>
>
> Println formats all numbers in decimal by default, and rune is simply an
> alias for int32.
>
> Println prints a string by copying its bytes to stdout. In this case,
> it's just the single byte 97. The terminal prints this byte as 'a'. For
> more complex code points (values > 127), the UTF-8-encoded string would
> contain multiple bytes, and the terminal would decode these back into a
> single code point and display the appropriate glyph.
>
--
You received this message because you are subscribed to the Google Groups
"golang-nuts" group.
To unsubscribe from this group and stop receiving emails from it, send an email
to golang-nuts+unsubscr...@googlegroups.com.
For more options, visit https://groups.google.com/d/optout.
