what exactly is string length?

[rikki cattermole]

On 02/04/2021 5:38 PM, mw wrote:
> On Friday, 2 April 2021 at 04:36:01 UTC, rikki cattermole wrote:
>> On 02/04/2021 5:32 PM, mw wrote:
>>> ---
>>> import std;
>>> import std.conv : text;
>>>
>>>
>>> void main()
>>> {
>>>     char[6] s;
>>>     s = "abc";
>>>     writeln(s, s.length);  // abc6, ok it's the static array's length
>>>
>>>     string t = text("head-", s, "-tail");
>>>     writeln(t, t.length);  // head-abc-tail16, why?
>> assert(t[9] == '\0');
>>> }
>>> ---
> 
> I don't get it, what do you mean by the assertion:
> 
> 
> assert(t[9] == '\0');
> 
> 
> t == "head-abc-tail"

Not all characters can be printed such as NULL.

[104, 101, 97, 100, 45, 97, 98, 99, 0, 0, 0, 45, 116, 97, 105, 108]