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.
converting data has nothing to do with OOP.
In D we write like that:
```
import std.range : chunks; // consumes lazily two by
two
import std.algorithm.iteration : map; // apply a func to the
chuncks
import std.conv : to; // the func: convert with
a custom base
import std.array : array; // render the whole stuff
ubyte[] a = "deadbeef".chunks(2).map!(a => a.to!ubyte(16)).array;
```
