Advent of Code 2019

[Steven Schveighoffer]

On 11/26/19 7:00 AM, Sergei Nosov wrote:
> On Monday, 25 November 2019 at 15:30:47 UTC, Steven Schveighoffer wrote:
>>
>> https://dlang.org/phobos/std_ascii.html#toLower
>> https://dlang.org/phobos/std_ascii.html#toUpper
>> https://dlang.org/phobos/std_utf.html#byCodeUnit
>>
> 
> Thanks!
> 
> byCodeUnit seems to be the working out alright.
> 
> I believe, I've tried `byChar` previously and couldn't make it work 
> (because I was under misconception that it has the semantics of 
> `byCodeUnit`).

Yeah, byCodeUnit basically tells Phobos to ignore autodecoding, and 
treats it like the array that it is for the purposes of algorithms and 
ranges. It should provide all the same underlying mechanisms that the 
array provides, including random access, at least that's the purpose.

byChar I think is a conversion routine, meant to be used to shoehorn 
e.g. a wchar[] or dchar[] into a utf8 range. In fact, byChar returns 
byCodeUnit if the types are equal (or at least it should). If it wasn't 
working but byCodeUnit is, please file an issue.

-Steve