On 07/02/2018 4:06 AM, Craig Dillabaugh wrote:
> On Wednesday, 7 February 2018 at 03:25:05 UTC, rikki cattermole wrote:
>> On 06/02/2018 8:46 PM, Craig Dillabaugh wrote:
>>> On Tuesday, 6 February 2018 at 18:46:54 UTC, H. S. Teoh wrote:
>>>> [...]
>>> clip
>>>> [...]
>>> clip
>>>> [...]
>>>
>>> Wouldn't it be more accurate to say OO is not the correct tool for every job rather than it is "outdated".  How would one write a GUI library with chains and CTFE?
>>
>> But you could with signatures and structs instead ;)
> 
> I am not sure how this would work ... would this actually be a good idea, or are you just saying that technically it would be possible?

A very good idea :)

WIP: https://github.com/rikkimax/DIPs/blob/master/DIPs/DIP1xxx-RC.md
https://github.com/rikkimax/stdc-signatures/tree/master/stdc

On Tuesday, 6 February 2018 at 18:33:02 UTC, Ralph Doncaster wrote:
> I've been reading std.conv and std.range, trying to figure out a high-level way of converting a hex string to bytes.  The only way I've been able to do it is through pointer access:
>
> import std.stdio;
> import std.string;
> import std.conv;
>
> void main()
> {
>     immutable char* hex = "deadbeef".toStringz;
>     for (auto i=0; hex[i]; i += 2)
>         writeln(to!byte(hex[i]));
> }
>
>
> While it works, I'm wondering if there is a more object-oriented way of doing it in D.

After a bunch of searching, I came across hex string literals.  They are mentioned but not documented as a literal.
https://dlang.org/spec/lex.html#string_literals

Combined with the toHexString function in std.digest, it is easy to convert between hex strings and byte arrays.

import std.stdio;
import std.digest;

void main() {
    auto data = cast(ubyte[]) x"deadbeef";
    writeln("data: 0x", toHexString(data));
}

p.s. the cast should probably be to immutable ubyte[].  I'm guessing without it, there is an automatic copy of the data being made.

On Wednesday, 7 February 2018 at 14:47:04 UTC, Ralph Doncaster wrote:
> p.s. the cast should probably be to immutable ubyte[].  I'm guessing without it, there is an automatic copy of the data being made.

No copy - you just get undefined behavior if you actually try to modify it!