Could I get some help with a trivial question, I'm sure? How do
pass a slice as a range? This code:
import std.algorithm; // permutations
import std.range; // replicate
import std.stdio; // writeln
int main()
{
char[] as = replicate(['a'], 5);
as[0] = 'b';
foreach (perm; as.permutations)
writeln(perm);
}
appears to complain (actual error below) that 'as' is not a range.
Using the slice trick "as[]" from:
https://forum.dlang.org/thread/oxohqaicmpteesugs...@forum.dlang.org
doesn't help either. Something obvious I'm missing, I hope.
perm.d:8:26: error: none of the overloads of template
‘std.algorithm.iteration.permutations’ are callable using
argument types ‘!()(char[])’
8 | foreach (perm; as.permutations)
| ^
/usr/lib/gcc/x86_64-linux-gnu/13/include/d/std/algorithm/iteration.d:7919:20:
note: Candidate is: ‘permutations(Range)(Range r)’
with `Range = char[]`
must satisfy the following constraint:
` isRandomAccessRange!Range`
7919 | Permutations!Range permutations(Range)(Range r)
| ^
