bigEndian in std.bitmanip

[Imperatorn]

On Tuesday, 31 October 2023 at 10:09:53 UTC, Salih Dincer wrote:
> Hello,
>
> Why isn't Endian.littleEndian the default setting for read() in 
> std.bitmanip?
>
> Okay, we can easily change this if we want (I could use enum LE 
> in the example) and I can also be reversed with 
> data.retro.array().
>
> ```d
> void main()
> {
>   import std.conv : hexString;
>   string helloD = hexString!"48656C6C6F204421";
>   // compile time converted literal string -ˆ
>
>   import std.string : format;
>   auto hexF = helloD.format!"%(%02X%)";
>
>   import std.digest: toHexString;
>   auto arr = cast(ubyte[])"Hello D!";
>
>   auto hex = arr.toHexString;
>   assert(hex == hexF);
>
>   import std.stdio : writeln;
>   hex.writeln(": ", helloD);
> // 48656C6C6F204421: Hello D!
>   assert(helloD == "Hello D!");
>
>   auto data = arr.readBytes!size_t;
>   data.code.writeln(": ", data.bytes);
> // 2397076564600448328: Hello D!
> }
>
> template readBytes(T, R)
> {
>   union Bytes
>   {
>     T code;
>     char[T.sizeof] bytes;
>   }
>   import std.bitmanip;
>   enum LE = Endian.littleEndian;
>
>   auto readBytes(ref R data)
>   {
>    import std.range : retro, array;
>    auto reverse = data.retro.array;
>    return Bytes(reverse.read!T);
>   }
> }
> ```
>
> However, I think it is not compatible with Union. Thanks...
>
> SDB at 79

It might make sense to change since little endian is the most 
common when it comes to hardware. But big endian is most common 
when it comes to networking. So I guess it depends on your view 
of what is most common. Interacting with your local hardware or 
networking.