On Wednesday, 20 July 2016 at 07:49:38 UTC, celavek wrote:
I thought that I could use a dynamic array as a range ...
You can. However, if you take a look at the documentation for
std.random.randomShuffle [1], you'll find the following
constraint:
if (isRandomAccessRange!Range);
You can then go to the documentation for
std.range.primitives.isRandomAccessRange [2], where you'll find
the following:
"Although char[] and wchar[] (as well as their qualified versions
including string and wstring) are arrays, isRandomAccessRange
yields false for them because they use variable-length encodings
(UTF-8 and UTF-16 respectively). These types are bidirectional
ranges only."
If you are absolutely, 100% certain that you are dealing with
ASCII, you can do this:
```
import std.string : representation;
randomShuffle(charArray.representation);
That will give you a ubyte[] for char[] and a ushort[] for
wchar[].
[1] https://dlang.org/phobos/std_random.html#.randomShuffle
[2]
https://dlang.org/phobos/std_range_primitives.html#isRandomAccessRange
