Characters in D

user4567 user4567 at 1234.te
Sat Nov 2 18:26:57 UTC 2019


On Saturday, 2 November 2019 at 18:09:01 UTC, Eugene wrote:
> On Saturday, 2 November 2019 at 15:54:02 UTC, Adam D. Ruppe 
> wrote:
>> On Saturday, 2 November 2019 at 15:44:49 UTC, Eugene wrote:
>>> "Variable of type char can only hold letters that are in the 
>>> ASCII table". (section 15.4 Character literals)
>>> So why there is executed next code?
>>
>> The individual char can only hold those, but a group of chars 
>> can hold anything.
>>
>>> char[] cyrillics = "привет".dup;
>>
>> this works because the "string" has multi-char groupings
>>
>>> char[] cyrillics = ['п', 'р', 'и', 'в', 'е', 'т']; //not
>>
>> and this doesn't because you are specifying individual items 
>> there so it can't just spread them across multiple bytes
>
> Um. It is not obvious at all. What's mean spread across 
> multiple bytes?

it's encoded in UTF-8, for example the **string** "п" takes 2 
`char`s, although it's only one grapheme.

     assert("привет".length == 12); // encoded as UTF-8
     assert("привет"d.length == 6); // decoded, each dchar is 4 
bytes and can contain a cyrilic character.


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